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  significant correlation
     and significant correlation was found in the positive expression of cyclinB1 and p34cdc2 in grading,staging and prognosis(P<0.05).
     并且cyclinB1和p34cdc2的表达与肿瘤的分化程度、临床分期及预后明显相关(P<0.05)。
短句来源
     ⑵ There was not significant correlation between the expression of P73 and P53? p21WAF1/CIP1 in glioma.
     2. P73基因在人脑胶质瘤的表达与P53和p21WAF1/CIP1的表达无明显相关
短句来源
     No significant correlation exists between serum VCAM-1and IL-1β,IL-4(P=0.101,0.116).
     鼻咽癌患者血清VCAM-1水平与IL-1β、IL-4无明显相关(P=0.101和0.116);
短句来源
     A significant correlation was found between p53 overexpression and mdr-1 gene expression (r=0. 63, P<0. 05), while there was no significant correlation between the expressions of c-myc and mdr-l.
     p53的异常表达与mdr-1基因表达呈显著正相关(r=0.63,P<005),而c-myc和mdr-1的表达无明显相关
短句来源
     There were significant correlation between weight and body composition (body fat and lean mass)in female (r=0.522,P<0.0025;r=0.612,P<0.005).
     女性体重与脂肪、肌肉之间呈正相关分别为r=0.522,P<0.0025、r=0.612,P<0.005。 男性体重与BMI、W/H及全身肌肉量相关,与脂肪组织无明显相关
短句来源
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  close correlation
     There were close correlation between plasma prothrombin and warfarin (r=0 849,P<0 01), INR and F VII(r=-0 781,P<0 01).
     (3)血浆凝血酶原浓度与华法林血药浓度 (r=- 0 849;P <0 0 1)以及INR值与VII因子活性 (r =- 0 781;P <0 0 1)明显相关
短句来源
     A close correlation was present between MVD and VEGF expression ( P <0.01), and p53 expression correlated with both VEGF expression and MVD ( P <0.01).
     MVD记数与VEGF表达明显相关 (P <0 .0 1) ,p5 3表达与VEGF表达和MVD记数均显著相关 (P <0 .0 1)。
短句来源
     56 in 90 (62.2%) NSCLC showed absence of Fhit and 44 in 90 (48.9%) showed mutation expression of p53. Fhit and p53 abnormalities showed close correlation in non-squamous cell cancer(P<0.001),but showed no correlation in squamous cell cancer(P=0.079);
     [结果]62.2%(56/90)的NSCLC组织显示Fhit表达缺失,同时48.9%(44/90)有突变型p53表达; 两者的异常表达在非鳞组中明显相关(P<0.001),而在鳞癌组中无相关性(P=0.079);
短句来源
     This result indicated that EBV infection and bc1 2 protein may play an important role in the pathogenesis of NPC, but no close correlation was found between LMP 1 and bc1 2 protein in NPC( P >0.05).
     Bc1-2表达与LMP-1的阳性率无明显相关(P>0.05)。 表明Bc1-2异常表达和EB病毒感染均可能与鼻咽癌发生有关。
短句来源
     There existed close correlation (6/6,P<0.01) between cervical lymphatic metastasis and the positive expressions of multidrug resistantance correlative protein genes.
     颈淋巴结转移与MRPmRNA的阳性表达明显相关 (6 /6 ,P <0 .0 1)。
短句来源
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  apparent correlation
     The results were analysed by IBM computer. The indexes had apparent correlation between MEP, MIP and F-V curve(e. g. FIV, VCin.PIF, AIX,MMIF, VI75, VI50, VI25,FIV0. 5, FIV1. 0,FVC,VC,PEF,AEX,MMEF,PEFV,VE75,VE50,VE25,FEV0. 5,FEV1. 0).
     测定结果经相关分析发现,MEFV和MIFV多数指标实测值(如FIV、VCin、PIF、AIX、MMIF、PIFV、VI75、VI50、VI25、FIV 0.5、FIV 1.0、FVC、VC、PEF、AEX、MMEF、PEFV、VE75、VE50、VE25、FEV 0.5、FEV 1.0等指标)与MEP和MIP明显相关
短句来源
     There was a certain degree of parallelism between variation in Pn and that in nitrogen and soluble protein content, water use efficiency and mesophyll conductance among different treatments ,and the time course of change in these parameters after shifting the plants from high to low light conditions ,or vice versa, were more or less similar to that in Pn. No apparent correlation was .
     不同处理间Pn的差异与氮素和可溶性蛋白质含量、水分利用效率和叶肉导度之间存在大致平行的关系。 植株从高光到低光或从低光到高光转移之后,这些参数变化的时间进程与Pn进程相似,但气孔导度与Pn之间无明显相关
短句来源
     Results: NVC in DM was obviously slower than that in healthy controls. There was no apparent correlation of NCV changes with blood sugar and blood lipid,but the ages and the course of disease showed a link with slow NCV,especially in the patients with DPN.
     结果:DM组NCV明显低于对照组,DM组中NCV与空腹血糖、血脂无明显相关,与年龄、病程相关,且有周围神经症状者更为明显。
短句来源
  “明显相关”译为未确定词的双语例句
     Conclusion There is significant association between CYP11B2(-344T/C)polymorphism and essential hypertension in Han nationality in Beijing. CYP11B2(-344T/C)polymorphism is a predictor of antihypertensive effect of Valsartan.
     结论醛固酮合成酶基因CYP11B2(-344T/C)多态性与北京汉族人原发性高血压明显相关,并且可能是缬沙坦降压疗效的有效预测因子。
短句来源
     The VCAM-1 expression in carcinoma tissue was significantly correlated with Dukes stage,histological grade and local lymph node involvement(P<0.05),but not with age,gender,site or size of tumor(P>0.05).
     VCAM-1表达与患者年龄、性别、肿瘤大小、肿瘤位置均无明显相关(均P>0.05),但与Dukes分期、组织分化程度及有无淋巴结转移相关(均P<0.05)。
短句来源
     The expression of KAI1 protein was not found to be associated with the presence of P53 protein in GTD(P>0.05,r_s=-0.8).
     ③P53和KAI1表达之间无明显相关(P>0.05,rs=-0.8)。
短句来源
     Results hs-CRP were correlative with both IMT obviously. The correlative coefficient were 0.4274 and 0.4304 respectively (P < 0. 01) ;
     结果hs-CRP与双侧IMT明显相关,相关系数r分别为0.4274和0.4304(P<0.01);
短句来源
     But the value of MFI had no marked correlation with that of MVD in colorectal carcinoma (r = 0.115, P = 0.358).
     而CD24蛋白平均荧光强度与MVD未见明显相关(r=0.115,P=0.358).
短句来源
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  significant correlation
Statistically significant correlation (r>amp;gt;0.905) was obtained between the physicochemical parameters and biological activity.
      
There was a significant correlation (R = 0.696) between accumulated sand volume (V2) and plant volume (V1).
      
The results show a significant correlation between ES, transverse vibration DMOE (EF), and longitudinal vibration DMOE (EL).
      
Nighttime water recharge had no significant correlation with environmental factors, but was well correlated with the diameter at breast height, tree height, and crown size.
      
The correlation analysis between genetic and geographical distances showed the existence of a remarkably significant correlation between the genetic distance and the longitudinal difference among populations of D.
      
更多          
  close correlation
Correlation analysis' results showed that there was a close correlation among the HRV indices, human psychological emotion ratings, and thermal parameters of the different kinds of materials.
      
The river runoff had a close correlation with annual rainfall, the size of forest harvesting and regeneration.
      
The components of metabolic syndrome such as obesity, hyperglycemia, hypertension and dyslipidemia had a close correlation with SUA.
      
A close correlation between spontaneous local conformational reconstructions in fibrinogen molecule and its functional activity is concluded.
      
A close correlation is shown between the morphological characteristics of the proton precipitation and the Pc1 pulsations observed by the ground-based geophysical observatory Sodankyl?.
      
更多          
  apparent correlation
In other species, no apparent correlation was found between selective polyploidy of basophilic cells and environmental conditions or biology traits of the bivalves.
      
No apparent correlation existed between CSF TGF-β1 levels and CSF protein or cell counts in patients with bacterial meningitis.
      
An apparent correlation has been observed between the RM values obtained by reversed-phase TLC and the connectivity indices arithmetically computed for various substituents in a pyrazine carbothioamide system.
      
However, there was no apparent correlation between platelet adhesion and the amount of fibrinogen adsorption or monoclonal antibody binding to surface-bound fibrinogen.
      
To account for the apparent correlation structures in our simple model system, we propose that they indicate geometric distortion of the phase space.
      
更多          


Experiments were carried out with more than 70 varieties and 30 cross combinationS over three years to Study the de elopment of Some characters in the tomato plant in shenyang area.The following primary conclnsions have Leen drawn: 1.Under the condition that seedlings are raised in hot bed and trans planted to the open in early May, the growth period from the time of sowing to first harvest requires about 135 days; and it can be subdivided into the following stages,namely,the gevmination stage (12.5±6.5 days),...

Experiments were carried out with more than 70 varieties and 30 cross combinationS over three years to Study the de elopment of Some characters in the tomato plant in shenyang area.The following primary conclnsions have Leen drawn: 1.Under the condition that seedlings are raised in hot bed and trans planted to the open in early May, the growth period from the time of sowing to first harvest requires about 135 days; and it can be subdivided into the following stages,namely,the gevmination stage (12.5±6.5 days), the seedling stage (29.5±5.5 days), the flower development stage (35±8 days), and the fruit development Stage including the flowering stage (58±10 days),Flower bud differentiation usually begins during the appearance of the fourth leaf.Within the growing season, the shortest growth period occurred white seed were sown in June, and under such condition the time required from seedling emergence to first harvest needs only 80 days. 2.Temperature is the main factor which influences the length of the second developmental stage, which is shorter with mean temperature above 20℃ than it is around 15℃.The main factor that influences the length of the third developmental stage is the intensity of light.The effect of other factors such as the daily mean temperature, deposition of rainfall and others within the range of seasonal variation seems to have only minor importance.With the fourth and fifth developmental stage, temperature is still the main influencing factor. 3.Earliness of maturity has been found to be dependent both upon the time of flowering and the length of fruit development period.Under ordinary cultural condition it depends more upon the length of fruit development period, while under condition unfavorable for flower bud differentiation it depends more upon the flowering time. 4.The position of the first inflorescence varies with the growth condition of seedlings, and its year-round curve (including greenhouse culture) appears to have two peaks, i.e.higher in Spring and Autumn sowing, lower in Summer and Winter Soving.This is also true with hybrid seedlings.It seems that under ordinary condition light intensity and the daily amplitude of temperature are the two main factors which affect the position of the first inflorescence. 5.No Significant correlation was found letween earliness and the position of first inflorescence.The Conventional hypothesis which postulates,the existence of this correlation calls for further consideration. 6.There is no significant correlation existing between the length of fruit development period and the size of fruit finally attained.The length of fruit development period seems to be determined mainly by the rate of development in early stage with mean temperature alove 20℃ which is found to be more rapid than that of 15℃.Fruits that have reached the size alout half of their final diameter require about 25 days for further develop ment to reach maturity under all experimental conditions.Tomato fruits reuire alout 800℃ of summation of mean daily ternperature to develop from fertilization to maturity.However, early varieties may be satisfied with temperature summation lower than this, while late varieties may require a little higher than this. 7.Continuous selection of the early ripening fruits from early maturing plants results in gradually tropping of the mean fruit weight. 8.when plants were prunned to set only with three trusses of fruits, the varietal difference expressed as average yield to the plant was found to have no significant correlation with the mean numler of fruits to the plant tut to depend mainly upon the mean frnit weight of the variety. 9.The distribution of yield within the harvesting period from June to August may roughly be expressed by a curve with only one peak.if the yield is counted by every ten days, then most varieties reach their highest yield at the third or fourth time of picking.Generally, the first three pickings have already yielded about 70—90% of their total products.Inorder to utilize the land more economically a harvesting period lasting 30—40 (lays should be considered as suitable. 10.Most F_1 hybrids are superior to the parents as regard to the earliness of maturity, proluctivity, and high yield on the early stage.Among the varieties which have been tested,"Bison","Bounty" and"podaleaskovsky" are better parents for prolucing early and productive F_1 hybrids.

本文是从1954年起到1957年三年多时间内在沈阳对总共七十多种和三十多杂交组合的番茄的一些性状的观察研究总结,初步结论有以下几点: 一、在沈阳地区春冬温床育苗的情况下番茄从播种到初次收获约需135天,其中发芽期为12.5±6.5天,幼苗期29.5±5.5天,花器发育期为35±8天,果实发育期包括开花期在内为58±10天。花芽分化开始于第四真叶出现时。在一年之中6月播种的物候期最短,从出土到初次收获仅80天。二、影响第二发育分期长短的主要因素是气温,凡是平均温度在20℃以上的都比在15℃左右的短。影响第三发育分期长短的主要因素是光照强度。在自然气候变异幅度内的温度降水量等因素虽有影响但不及光照,影响第四和第五发育分期长短的主要因素也是温度。三、花期早晚和果实发育期的长短对早熟性有大致相等的重要性。在通常温床育苗情况下受果实发育长短的影响较大,当幼苗期条件不利于花芽分化时则受花期早晚的影响较大。四、第一花序节次的高低随育苗环境条件而变。在一年中有二次高低节次变化(包括温室栽培在内),即春秋低冬夏高。杂种也表现相似的趋势。节次的高低似乎主要决定于光照强度和日温差大小。五、第一花序节次的高低和品种成熟期的早晚并无一...

本文是从1954年起到1957年三年多时间内在沈阳对总共七十多种和三十多杂交组合的番茄的一些性状的观察研究总结,初步结论有以下几点: 一、在沈阳地区春冬温床育苗的情况下番茄从播种到初次收获约需135天,其中发芽期为12.5±6.5天,幼苗期29.5±5.5天,花器发育期为35±8天,果实发育期包括开花期在内为58±10天。花芽分化开始于第四真叶出现时。在一年之中6月播种的物候期最短,从出土到初次收获仅80天。二、影响第二发育分期长短的主要因素是气温,凡是平均温度在20℃以上的都比在15℃左右的短。影响第三发育分期长短的主要因素是光照强度。在自然气候变异幅度内的温度降水量等因素虽有影响但不及光照,影响第四和第五发育分期长短的主要因素也是温度。三、花期早晚和果实发育期的长短对早熟性有大致相等的重要性。在通常温床育苗情况下受果实发育长短的影响较大,当幼苗期条件不利于花芽分化时则受花期早晚的影响较大。四、第一花序节次的高低随育苗环境条件而变。在一年中有二次高低节次变化(包括温室栽培在内),即春秋低冬夏高。杂种也表现相似的趋势。节次的高低似乎主要决定于光照强度和日温差大小。五、第一花序节次的高低和品种成熟期的早晚并无一定的相关,所以这方面的传统说法是需要修正的。六、果实发育所需时期的长短与果实最后达到的大小无明显相关。果实发育期的长短主要决定于幼果期的发育速度,而幼果期的长短主要决定于气温,平均温度在20℃以上时显著较在15℃左右时为速。果实发育所需積温约在800℃左右早熟品种较少晚熟品种较多。七、继续选择早熟单株早期果实能使平均单果重逐渐减轻。八、在控制结实花序数的情况下平均单株产量主要决定于平均单果重而与平均单株结果数无明显相关。九、从6月下旬到8月的产果期内分期产量的分布呈单峯曲綫,如以十天为一期则一般品种都在第三第四期连产量的最高峯。一般前三期的产量已达总产量的70~90%,故为有效利用土地起见番茄从开始采果起经30~40天即可拔株。十、杂种第一代在早熟性丰产性和早期产量方面一般都优于亲本品种。从利用杂种第一代获得早熟丰产系统来讲「比」「矮红金」「波逹里斯可夫」等都是较优良的亲本。

Experiments were carried out with more than 70 varieties and 30 cross combinations over three years to study the development of some characters in the tomato plant in Shenyang area.The following primary conclusions have Leen drawn. 1.Under the condition that seedlings are raised in hot bed and trans- planted to the open in early May,the growth period from the time of sowing to first harwest requires about 135 days;and it can be subdivided into the follwing stages,namelyi,the germination stage(12.5±6.5 days),the...

Experiments were carried out with more than 70 varieties and 30 cross combinations over three years to study the development of some characters in the tomato plant in Shenyang area.The following primary conclusions have Leen drawn. 1.Under the condition that seedlings are raised in hot bed and trans- planted to the open in early May,the growth period from the time of sowing to first harwest requires about 135 days;and it can be subdivided into the follwing stages,namelyi,the germination stage(12.5±6.5 days),the seedling stage(29.5±5.5 days),the flower development stage(35±8 days),and the fruit development stage including the flowering stage(58±10 days).Flower bub differentiation usually begins during the appearanue of the fourth leaf. Within the growing season,the shortest growth period occurred while seed were sown in June,and under such condition the time required from seedling (?)mer gence to first harvest needs only 80 days. 2.Temperature is the main factor which influences the length of the second developmental stage,which is shorter with mean temperature above 20℃ than it is around 15℃.The main factor that influences the length of the third developmental stage is the intensity of light.The effect of other factors such as the daily mean temperature,deposition of rainfall and others within the range of seasonal variation seems to have only minor importance.With the fourth and fifth developmental stage,temperature is still the main influencing factor. 3.Earliness of maturity has been found to be dependent Loth upon the time of flowering and the length of fruit development period.Under ordinary cultural condition it depends more upon the length of fruit development period, while under condition unfavorable for flower bud differentiation it depends more upon the flowering time. 4.The position of the first inflorescence varies with the growth condition of seedlings,and its year-round curve(including greenhouse culture)appears to have two peaks,i.e.higher in Spring and Autumn Sowing,lower in Summer and Winter Sowing.This is also true with hybrid seedlings.It seems that und- er ordinary condition light intensity and the daily amplitude of temperature are the two main factors which affect the position of the first inflorescence. 5.No significant correlation was found letween earliness and the position of first inflorescence.The Conventional hypothesis which postulates,the existe- nce of this correlation calls for further consideration. 6.There is no significant correlation existing between the length of fruit development period and the size of fruit finally attained.The length of fruit development period seems to be determined mainly by the rate of development in early stage with mean temperature above 20℃ which is found to be more rapid than that of 15℃.Fruits that have reached the size about half of their final diameter require about 25 days for further development to reach maturity under all experimental conditions.Tomato fruits require about 800℃ of summ- ation of mean daily temperature to develop from fertilization to maturity.Ho- wever,early varieties may be satisfied with temperature summation lower than this,while late varieties may require a little higher than this. 7.Continuous selection of the early ripening fruits from early maturing plants results in gradually dropping of the mean fruit weight. 8.when plants were prunned to set only with three trusses of fruits,the varietal difference expressed as average yield to the plant was found to have no significant correlation with the mean number of fruits to the plant out to dep- end mainly upon the mean fruit weight of the variety. 9.The distribution of yield within the harvesting period from June to August may roughly be expressed by a curve with only one peak.If the yield is counted by every ten days,then most varieties reach their highest yield at the third or fourth time of picking.Generally,the first three pickings have already yielded about 70—90% of their total products.lnorder to utilize the land more economically a harvesting period lasting 30—40 days should be considered as suitable. 10.Most F_1 hybrids are superior to the paxents as regard to the earliness of maturity,productivity,and high yield on the early stage.Among the varieties which have been tested,“Bison”,“Bounty”and“podaleaskovsky”axe better parents for protucing early and productive F_1 hybrids.

本文是从1954年起到1957年三年多时间内在渖阳对总共七十多品种和三十多杂交组合的番茄的一些性状的观察研究总结,初步结论有以下几点:一、在渖阳地区春冬温床育苗的情况下番茄从播种到初次收获约需135天,其中发芽期为12.5±6.5天,幼苗期29.5±5.5天,花器发育期为35±8天,果实发育斯包括开花期在内为58±10天。花芽分化开始于第四真叶出现时。在一年之中6月播种的物候期最短,从出土到初次收获仅80天。二、影响第二发育分期长短的主要因素是气温,凡是平均温度在20℃以上的都比在15℃左右的短。影响第三发育分期长短的主要因素是光照强度。在自然气候变异幅度内的温度降水量等因素虽有影响但不及光照,影响第四和第五发育分期长短的主要因素也是温度。三、花期早晚和果实发育期的长短对早熟性有大致相等的重要性。在通常温床育苗情况下受果实发育长短的影响较大,当幼苗期条件不利于花芽分化时则受花期早晚的影响较大。四、第一花序节次的高低随育苗环境条件而变。在一年中有二次高低节次变化(包括温室栽培在内)即春秋低冬夏高。杂种也表现相似的趋势。节次的高低似乎主要决定于光照强度和日温差大小。五、第一花序节次的高低和品种成熟期的早晚并无一定...

本文是从1954年起到1957年三年多时间内在渖阳对总共七十多品种和三十多杂交组合的番茄的一些性状的观察研究总结,初步结论有以下几点:一、在渖阳地区春冬温床育苗的情况下番茄从播种到初次收获约需135天,其中发芽期为12.5±6.5天,幼苗期29.5±5.5天,花器发育期为35±8天,果实发育斯包括开花期在内为58±10天。花芽分化开始于第四真叶出现时。在一年之中6月播种的物候期最短,从出土到初次收获仅80天。二、影响第二发育分期长短的主要因素是气温,凡是平均温度在20℃以上的都比在15℃左右的短。影响第三发育分期长短的主要因素是光照强度。在自然气候变异幅度内的温度降水量等因素虽有影响但不及光照,影响第四和第五发育分期长短的主要因素也是温度。三、花期早晚和果实发育期的长短对早熟性有大致相等的重要性。在通常温床育苗情况下受果实发育长短的影响较大,当幼苗期条件不利于花芽分化时则受花期早晚的影响较大。四、第一花序节次的高低随育苗环境条件而变。在一年中有二次高低节次变化(包括温室栽培在内)即春秋低冬夏高。杂种也表现相似的趋势。节次的高低似乎主要决定于光照强度和日温差大小。五、第一花序节次的高低和品种成熟期的早晚并无一定的相关,所以这方面的传统说法是需要修正的。六、果实发育所需时期的长短与果实最后达到的大小无明显相关。果实发育期的长短主要决定于幼果期的发育速度,而幼果期的长短主要决定于气温,平均温度在20℃以上时显著较在15℃左右时为速。果实发育所需积温约在800℃左右早熟品种较少晚熟品种较多。七、继续选择早熟单株早期果实能使平均单果重逐渐减轻。八、在控制结实花序数的情况下平均单株产量主要决定于平均单果重而与平均单株结果数无明显相关。九、从6月下旬到8月的产果期内分期产量的分布呈单峰曲线,如以十天为一期则一般品种都在第三第四期达产量的最高峰。一般前三期的产量已达总产量的70~90%,故为有效利用土地起见番茄从开始采果起经30~40天即可拔株。十、杂种第一代在早熟性丰产性和早期产量方面一般都优于亲本品种。从利用杂种第一代获得早熟丰产系统来讲「比(?)」「矮红金」「波达里斯可夫」等都是较优良的亲本。

For the purpose of utilizing electrical conductivity of paddy soils as an index of soil fertility,both field measurements and laboratory studies were undertaken.A specially prepared conductivitycell with fixed distance between the platinum electrodes was used in field measurements.It was found that for acid and neutral paddy soils of Central China,the electrical conductivityof the plowed layer showed a close correlation with the fertility status of the soil in the majorityof cases,especially in the early period...

For the purpose of utilizing electrical conductivity of paddy soils as an index of soil fertility,both field measurements and laboratory studies were undertaken.A specially prepared conductivitycell with fixed distance between the platinum electrodes was used in field measurements.It was found that for acid and neutral paddy soils of Central China,the electrical conductivityof the plowed layer showed a close correlation with the fertility status of the soil in the majorityof cases,especially in the early period of plant growth.The specific conductivity of the soildecreased and the difference in conductivity between soils became less conspicuous gradually withplant growth,presumably due to the adsorption of nutrient ions by the rice roots.Anotherevidence supports this supposition,in which the electrical conductivity of the rhizosphere appearedto be less than that of the bulk of the soil.The increase in electrical conductivity after water-logging showed considerable difference betweenfertile and infertile soils of the same type,especially for the acid paddy soils with low base status.The increase in conductivity was found to be due chiefly to the decomposition of organic matter.It was suggested that the increase in electrical conductivity after water-logging might be used as anindex in detecting the supplying power of plant nutrients of soils.The electrical conductivity due to the charged clay particles was found to be negligibly small,and the variation in water content within the range commonly found in paddy fields showedno remarkable influence on conductivity.The electrical conductivity of separeted soil solution wasfound to be due chiefly to salts of calcium and magnesium,and to a lesser extent to potassium salts.

1.设计了一个在田间直接测定水稻土的电导的电导池,用以鉴别水稻土的肥力状况。根据条件试验,在水稻生长期间通常变动的水分含量范围以内,水分含量的差别可以不予考虑。土壤胶体本身的电荷在电导上的贡献也很小,所以一般也不必考虑。土壤含砂粒较多时,应该加以适当的改正值。2.根据大量的田间测定结果,在酸性的水稻土中,电导与肥力水平成明显相关。施肥的数量和种类对土壤电导发生显著的影响。由于水稻对养分的吸收,所以根际土壤的电导较根外为低,并且随着水稻的生长,而使土壤电导降低。3.酸性水稻土的干土渍水后电导的增加数值与土壤的肥力水平成正相关。这种电导的增加,基本上是由于有机质的分解所致。4.根据与化学分析的对照结果,土壤溶液的电导与阳离子的浓度成明显相关。在引起酸性水稻土电导的阳离子中,钙镁占90—95%,钾占2—8%,铁和铵的数量都在1%以下。5.作者根据研究结果,认为电导可以作为鉴别酸性水稻土的肥力水平的一个简便的综合性参考指标。

 
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