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土壤速效磷
相关语句
  soil available phosphorus
     The contents of soil available phosphorus and total phosphorus inceased 67.2%(p<0.01) and 23.2%(p<0.05),respectively.
     土壤速效磷和全磷含量分别增加67.2%和23.2%,差异达极显著(p<0.01)和显著(p<0.05)水平;
短句来源
     (3) The utilization rates for nitrogen and phosphorus (ZN and ZP) were as follows. ZN (%) = 42.1 - 0.35P, ZP (%) =27.6-1.20P (where P is the content of soil available phosphorus) .
     (3)氮、磷肥利用率(Z_N、Z_P)分别为:Z_N(%)=42.1-0.35P,Z_P(%)=27.6-1.20P(P为土壤速效磷含量)。
短句来源
     The results show that the soil available phosphorus decreases from-20 mg·kg-1 to 10 mg·kg-1;
     结果表明,1988—2002年的城市化过程中,郑州市郊区土壤速效磷含量变化为-20~10 mg. kg-1;
短句来源
     The quantity of external hyphae was the highest under T2 treatment(soil available phosphorus 19.8mg/kg).
     菌丝量在T2土壤速效磷含量为19.8mg/kg时达到最高。
短句来源
     According to the analysis data of 173 sampling points in 1982 and 117 sampling points in 2002, the temporal-spatial variability of soil available phosphorus (SAP) of the topsoil(0~20 cm) in Chengdu Plain was expressed by spherical semi-variance model and the ordinary Kriging interpolated method.
     根据1982年173个样点和2002年117个样点的分析数据,利用地统计学方法和GIS技术对成都平原耕层(0~20cm)土壤速效磷含量的时空变异特征进行了研究。
短句来源
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  soil available p
     The results showed that soil available P(Olsen-P)decreased rapidly at the beginning,but approached to stable after 60 days of P application.
     结果表明,土壤速效磷(Olsen-P)浓度在施磷后迅速下降,60d后趋于稳定.
短句来源
     The average net profit with P application was 831.6 Yuan/hm~2 and the value to cost ratio(VCR) was 3.10.It was showed that rapeseed yield increment with P application had significant negative correlation with soil available P level.
     施磷的纯利润平均为831.6元/hm2,产投比平均为3.10。 油菜施磷增产幅度与土壤速效磷含量呈极显著负相关。
短句来源
     The residue effects were increased with increasing of P application. was able to The soil available P was increased by rapidly by applying of P-fertilizer. When doses of P_2O_5 applied were 138.0 kg,207.0 kg,279.0 kg and 414 kg per hm~2 , the available-P was increased by 1.8mg/kg~10.4 mg/kg comparing with the non-fertilized treatment.
     同时,增施磷肥可迅速提高土壤速效磷含量,每公顷施P205138.0、207.0、279.0、414.0kg当季土壤速效磷含量较不施磷肥增加1.8 mg/kg—10.4 mg/kg,提高90%—520%。
短句来源
     The correlation of soil available P and Ca-P components is Ca8-P > Ca2-P, the correlativity of soil phosphatase activity and available P and Ca-P components is: Boot stage > Jointing stage > Waxy ripe stage > Maturity stage, soil available P and phosphatase activity have no correlativity with Ca10-P. 
     土壤速效磷和Ca-P组分的相关性为Ca8-P>Ca2-P,土壤磷酸酶活性与速效磷和Ca-P组分的相关性为孕穗期>拔节期>蜡熟期>成熟期,土壤速效磷和磷酸酶活性都与Ca10-P不相关。
短句来源
     Transformation Characteristics of Ca-P in Calcareous Soil and Correlativity With Soil Available P and Phosphatase Activity During Maize Growth
     玉米生长期间石灰性土壤Ca-P转化特征与土壤速效磷、磷酸酶活性及相关性研究
短句来源
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  soil readily available phosphorus
     while soil readily available phosphorus and most microelement are widely lack.
     土壤速效磷(P)和微量元素普遍缺乏。
短句来源
  “土壤速效磷”译为未确定词的双语例句
     The total phosphorus and available phosphorus content in 0-20 cm soil layer increased, but 20-40cm decreased.
     施磷提高了0-20cm土层土壤全磷、速效磷含量及0-1m土壤速效磷累积量,20-40cm土层速效磷含量降低;
短句来源
     ( 2 ) Correction coefficients were CP=0.41 + 4.01/Pand CN- 0.28 + 0.035P for soil available phosghorous (CP) and alkali hydrolytic nitrogen (CN) respectively.
     (2)土壤速效磷和碱解氮的校正系数(C_P、C_N)分别为:C_P=0.41+4.01/P,C_N=0.28+0.035P。
短句来源
     Based on VCR at 2.0 and 1.0 level,the soil critical available P was 16.2mg/kg for serious deficiency and 20.2mg/kg for deficiency,respectively.
     以施磷产投比2.0和1.0作为土壤缺磷标准时,土壤速效磷严重缺乏和缺乏的指标分别为16.2mg/kg和20.2mg/kg。
短句来源
     Based on relative yield of CK/+P at 50,75 and 90 percent level,the soil critical available P was 9.9mg/kg for extreme deficiency,14.3mg/kg for serious deficiency and 20.2mg/kg for deficiency,respectively.
     按照不施磷对照处理产量占施磷处理产量的50%、75%和90%作为判断土壤缺磷标准,则土壤速效磷极度缺乏、严重缺乏和缺乏的指标分别为9.9mg/kg、14.3mg/kg和20.2mg/kg;
短句来源
     The results showed that 53%~64% of saline matter and 55%~60% of nitrate nitrogen were reduced, respectively, while 1.0~1.5 times of available phosphorus was increased in topsoil after saliferous soil was washed;
     结果表明:灌水洗盐能降低表层土壤盐分53%~64%、土壤硝态氮55%~60%,但使表层土壤速效磷增加了1.0~1.5倍;
短句来源
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  soil available phosphorus
With isolates 02 and 13, the soil available phosphorus increased at the five-leaf stage, while N-fixation in the soil increased by 45% or 11% relative to control.
      
Correlation analysis showed the dependence of length of AM hyphae and sporulation on soil available phosphorus.
      
  soil available p
Surface soil available P under tree canopies was 34-50% higher than the corresponding soil away from canopies.
      
Phosphorus-based manure or compost application resulted in similar grain yields to those for N-based treatments but had significantly less soil available P level after 4 yr of application.
      
Although differences were not statistically significant, soil available P concentration tended to increase at early stages of liming for both plantations.
      
However, at the same levels of soil available P and K, field-grown tithonia consistently produced lower leaf P and K concentrations than that grown in hedges.
      
We quantified inputs from the atmosphere, dissolved and particulate-bound losses, throughfall and litterfall fluxes, standing crop litter and soil available P pools.
      
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Under the different temperature conditions,we analysed forty samples of different types of soils in Guangxi to measure the contents ofactive phosphorus by Olsen's method.Via statistics,a curvilinear regression equation was formulated and,from the equation,the temperaturecorrection formula was conducted for the determination of soil activephosphorus.So the temperature correction coefficient can be obtained.By this temperature correction formula,the contents of soil active phos-phorus got at the temperature 10—34℃...

Under the different temperature conditions,we analysed forty samples of different types of soils in Guangxi to measure the contents ofactive phosphorus by Olsen's method.Via statistics,a curvilinear regression equation was formulated and,from the equation,the temperaturecorrection formula was conducted for the determination of soil activephosphorus.So the temperature correction coefficient can be obtained.By this temperature correction formula,the contents of soil active phos-phorus got at the temperature 10—34℃ can be converted to the contentsgot at 25℃.The results calculated by this formula are more precisionand accurate than those calculated by Ma Xinming's experiential formulafor the soils in Guangxi.It not only adapts to the temperature rectifyof the content of soil active phosphorus in Guangxi but extends therange of determination temperature.So it is rather suitable to the southof China where high temperature lasts for a long time in summer.

在不同温度下对广西不同土壤类型的40个样本采用 Olsen 法测定其速效磷含量,经统计处理,配置曲线回归方程,推导出测定土壤速效磷的温度校正式,并计算出温度校正系数,可以将在10—34℃下的测定值换算成25℃时的土壤速效磷含量,与马新民等的经验校正式比较,误差小些;同时扩大了温度范围(10—34℃),这对具有高温漫的长夏天的南方较为适合。

This paper studies the effect of increasing corn yield by N and K fertilizers in the soils with different content of fast-working P.Applying N or NK to core field increased the yield when the content of fast-working P was 3—46 ppm. The content of N in corn leaves was the highest when the content of fast-working P was moderate in soil. The higher content of fast-workng P in soil was, the higher content of K in corn leaves. Increasing K may enhance the content of K in corn leaves. The content of P in corn leaves...

This paper studies the effect of increasing corn yield by N and K fertilizers in the soils with different content of fast-working P.Applying N or NK to core field increased the yield when the content of fast-working P was 3—46 ppm. The content of N in corn leaves was the highest when the content of fast-working P was moderate in soil. The higher content of fast-workng P in soil was, the higher content of K in corn leaves. Increasing K may enhance the content of K in corn leaves. The content of P in corn leaves was increased with the increase of the fast-working P in soil. In farm production, the content of P in corn leaves may be use as an index measuring the content of fast-working P in soil.

本文研究了不同速效磷含量的土壤,氮钾肥时玉米的增产效应。土壤速效磷含量在3~46ppm时,氮肥和氮钾肥配合均表现增产。中等水平土壤速效磷含量玉米叶片中氮的含量最高。土壤速效磷含量与叶片中钾的含量密切相关。增施钾肥寸提高叶片中钾的含量。玉米叶片磷的含量随土壤中速效磷的增加而增加,可作为衡量土壤中速效磷含量的指标。

The key of the different amount of fertilizers applied in various soils lies in how to determine the level of the soil fertility. According to field fertilizer experiments made by us in many years and sites on the basis of unified design, we belive that , the content of available phosphorous in soil nutritions is well correlated with the yield:y = 8. 25+ 62. 46logp r = 0.8618* *(y : the percent of the yield, P: the measurement value of the available phosphorous in the soil)So, it is practical to use the content...

The key of the different amount of fertilizers applied in various soils lies in how to determine the level of the soil fertility. According to field fertilizer experiments made by us in many years and sites on the basis of unified design, we belive that , the content of available phosphorous in soil nutritions is well correlated with the yield:y = 8. 25+ 62. 46logp r = 0.8618* *(y : the percent of the yield, P: the measurement value of the available phosphorous in the soil)So, it is practical to use the content of the available soil phosphorous as one of the indexes of the soil fertility in this province. According to the relationship between the available soil phosphorous and the yield percent, the level of available phosphourous of the soil can he divided into three grades: below 10ppm, between 10 and 20 ppm, and above 20ppm. The corresponding yield percents of these grades are : below 70, between 70 and 90, and above 90.According to different levels of availabl soil phosphorous, three different equations of fertilizer effects are made up, and the best economical fertilizer application amount and the proportion of nitrogen and phosphorous can be calculated and the yield range can be predicted.The suitable application amount of fertilizers in the main production areas of winter wheat in the province can be recommended according to the level of available phosphorous of the soils, the effection equation of phosphate fertilizer , and nitrogenous and phosphate fertilizers. The yield and net profit can also be prodicted.The experimental result indicates the fertilizer fomula applicable for winter wheat in the province macroscopically. It is of universal significance in instructing fertilization scientifically in wheat. In the meanwhile, it provides scientific basis for the country to arrange production and allocate fertilizers.

因土施肥的关键在于如何确定土壤肥力水平.根据我们按统一方案进行的多年多点田间肥料试验结果认为,土壤诸养分中速效磷含量的高低与产量有较好的相关关系:y=8.25+62.46logP r=0.8618~(**)(y为产量百分数,p为土壤速效磷测试值),所以用土壤速效磷含量做为土壤肥力指标之一在河北是可行的.根据不同土壤供磷水平配置了三个肥效方程,算出不同供磷水平土壤的经济最佳施肥量和氮磷肥施用比例,也可预测产量幅度.本试验结果从宏观上提出了河北省冬小麦施肥配方,对指导小麦科学施肥有重要意义,同时为国家安排生产和调配化肥提供了科学依据.

 
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