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土壤速效钾     
相关语句
  soil available potassium
     The average level of the soil available potassium was 119.96 mg/kg,which decreased 18.94 mg/kg and 1.05 mg/kg one year averagely. But the decreasing trend alleviated in recent years.
     土壤速效钾7年平均值119.96 mg/kg,比第二次土壤普查时下降了18.94 mg/kg,平均每年以1.05 mg/kg的速度下降,但近年来下降趋势变缓;
短句来源
     Results of the research show that the soil organic matter content and soil available potassium content, both are generally moderate toward low , Over 71.6 % of the soil has orgnic matter ranging between 20 to 30 g/ kg, and over 73.74 % of soil available potassium content between 55 to 90 mg/ kg.
     研究结果表明,该地区土壤有机质、速效钾处于中等偏低的水平,该地区土壤有机质含量大多数在20~30 g/kg之间,占总量的71.6%。 该地区土壤速效钾含量主要处在55~90 mg/kg之间,占总量的73.74%。
     By the recent analysis results of the available potassium contents in comparison with those taken at the 2nd national soil investigation, the soil available potassium level has greatly declined with a drop rate of 7~ 87 mg/kg for paddy soils and 55~ 156 mg/kg for upland soils.
     根据近期土壤速效钾测试值与第二次土壤普查时期测试值比较,黔东南州土壤钾有大幅度下降,水稻土降幅为7~87mg/kg土,旱作土降幅为55~156mg/kg土。
短句来源
     Study of potassium recommendation for rapeseed according to soil available potassium content
     根据土壤速效钾确定油菜钾肥推荐用量的研究
短句来源
     No distinct difference of soil available potassium and boron contents was observed among the four plantations,only with a slightly higher K and lower B in APP.
     不同林型土壤速效钾差别不大,豆科林土壤小幅度高于其它林型,而不同林型土壤速效硼含量也差别不大,但豆科林土壤小幅度低于其它林型,这可能是豆科林对钾与硼的需要与影响不同所致;
短句来源
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  soil available k
     The present paper also show that the soil available K critical values of efficient application of potassium were 54, 82 and 141 mg kg~(-1), respectively, SMP, PWLP, and GLP.
     并找出了淹育型水稻土、潴育型水稻土和潜育型水稻土水稻施钾有效的土壤速效钾含量临界值,分别为54、82和141mg kg~(-1)。
短句来源
     The crifical values of soil available K from the regression equations were 169. 25, 110.86, 77.2ppm in Ppaddy field and 154.41, 173.1 and 203.29ppm in non-irrigatde land by applied 4, 8, 12 Kg K2O respec tively. In order to apply K fertilizer economically and efficiently the soil available K of paddy field or non-irrigated land in stum be lower than the critica lvalues of soil available K.
     经按亩施K_2O_4、8、12公斤用量的亩净增产量与土壤速效钾含量计算其回归方程,得出稻田土壤速钾临界值大体为169.25,110.86,77.2ppm,旱地大体为154.41,173.1,203.29ppm,要做到施钾充分经济有效,可在拟定钾肥用量曲线上选择低于土壤相应速钾临界值的田地施用。
短句来源
     Soil available nutrient content and its spatial Variability in two types of farm management systems were analyzed. The result showed that soil available K level was low and close to critical level in entire Shanghai area.
     通过对上海两种经营体制的土壤速效养分含量及变异性分析,结果表明:整个上海地区土壤速效钾均处于较低于的水平,都在临界值附近,而土壤有效锌在分散经营条件下处于中低水平,而在规模经营条件下有富集的趋势。
短句来源
     However,K application brought aboutsignificant economic benefits when soil available K was lower than 80 mg/kg.
     当土壤速效钾<80mg/kg时,施化学钾肥有显著的经济效益。
短句来源
     This paper deals with the comprehensive partitioning of soil potassium supply by means of graphical method, modified variance method of Cate-Nelson analysis, modified Mitscherlich equation and Logarithm equation for soil partitioning. Based on the 149 datum groups obtained from field trails, the soil available K of which was in the extent of 20-140 ppm, the partitioning value of soil available K supply indexes for the seasoning crop was pointed out.
     本研究应用点阵法,经修饰的Cate-Nelson方差法、Mitscherlich方程和对数方程拟合法综合分级,在土壤速效钾含量20~40ppm范围内,所取得的149组田间试验数据确定供钾水平等级,提出种植水稻、甘蔗、苎麻、西瓜和棉花等作物的土壤当季供钾(速效钾)指标。
短句来源
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  soil available kalium
     Comparison of Spatial Interpolation Methods for Soil Available Kalium
     土壤速效钾养分含量空间插值方法比较研究
短句来源
     Spatial Interpolation Methods for Soil Available Kalium
     土壤速效钾养分含量的空间插值方法研究
  “土壤速效钾”译为未确定词的双语例句
     The research results of probability kriging showed that the geometric mean probability of SAK≤100 mg/kg, ≤120 mg/kg and >150 mg /kg were 0.453, 0.566 and 0.327 in 1981, comparing to 0.523, 0.611 and 0.292 in 2002, respectively.
     该流域土壤速效钾在≤100mg/kg,≤120mg/kg和>150mg/kg含量水平下的几何平均概率分别由1981年的0 453,0 566和0 327变为2002年的0 523,0 611和0 292。
短句来源
     The available potassium is 70~100 mg/kg,applying potassium sulphate in 1 hm~2 can achieve good economic benefit.
     在土壤速效钾含量为70~100mg/kg范围,1hm2施用硫酸钾200~250kg可取得较好经济效益。
短句来源
     in the combined fertilization of organic and potassium fertilizers, the shortage of soil potassium decreased by 28.8%~78.5% and the available potassium increased by (84.6%~)128% compared with those in their single fertilization.
     与K素配施土壤K素亏缺量年均降低28.8%~78.5%,土壤速效钾比单施提高84.6%~128%。
短句来源
     After 60 days, the increase order of the fast available potassium is: blue standard lime mud field (160.2mg/kg)>moist sandy land (156.4mg/kg)>lime mud field (138.4mg/kg)> the yellow mud field (107.1mg/kg).
     60天后,土壤速效钾净增加量顺序为:青格灰泥田(160.2mg/kg)>潮砂田(156.4mg/kg)>灰泥田(138.4mg/kg)>乌黄泥田(107.1mg/kg)。
短句来源
     Demonstration experiments indicated that when available potassium in soil was lower than 150mg/kg applying potash to maize, millet, wheat and potato could improve plant growth, enhance their ability of resistance & increase the yields greatly. The yields of maize, millet, wheat and potato were increased by 8.5%~16 3%, 10.6%~17 8%, 9 8%~16 4% and 14 6%~22 3% respectively.
     试验示范表明 ,当地土壤速效钾含量在 150mg/kg以下 ,玉米、谷子、小麦、马铃薯施用钾肥后能促进植株生长 ,提高抗逆能力 ,较大幅度增加产量 ,增产幅度为 ,玉米 8 5%~ 16 3% ,谷子10 6%~ 17 8% ,小麦 9 8%~ 16 4 % ,马铃薯 14 6%~ 2 2 3%。
短句来源
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  soil available potassium
total K removed, K removal by pearl millet in 1980 and soil available potassium were positive and statistically significant.
      
  soil available k
The soil available K status was maintained to its initial content in plots receiving fertilizer K with increasing rates of N with or without P.
      
Recycling of crop residues by incorporation or burning increased soil available K and organic carbon significantly over control, while total N content increased by residue incorporation.
      
Soil available K and P increased markedly with organic sources through the level reached maximum with F-compost plus SDB.
      
  其他


In Mei Xian County of Guandong Province, one type of Chi-Ku disease of the rice plant was observed by local farmers for many years, but its causes had not been precisely identified. The disease was considered to be caused by the acidity of paddy soil and deficiency of nitrogen.Hence, when there was an occurrence of disease in the rice plant,the farmers applied much nitrogen fertilizer and lime to the soil. Subsequently, the severity of disease was observed, and the rice yield decreased or sometimes had nothing...

In Mei Xian County of Guandong Province, one type of Chi-Ku disease of the rice plant was observed by local farmers for many years, but its causes had not been precisely identified. The disease was considered to be caused by the acidity of paddy soil and deficiency of nitrogen.Hence, when there was an occurrence of disease in the rice plant,the farmers applied much nitrogen fertilizer and lime to the soil. Subsequently, the severity of disease was observed, and the rice yield decreased or sometimes had nothing but straw harvested. Soil and plant samples were collected from the diseased paddy field for chemical analysis and a pot experiment was conducted to clarify the inducing facters of disease. The results of the present study are indicated as follows: 1 . The soil and the rice plant were severely deficient in potassium.2. The K2O/N ratio of the leaf blade in the affected plant fell below 0.42 and the ratio of soluble-N to protein-N was above 8.0%,yet in the healthy rice plant,the K2O/N ratio was above 0.50 and the ratio of soluble-N to protein-n fell below 7.1%. The K2O/N ratio and protein-N content of the leaf blade can be increased but soluble-N content can be decreased by application of the potassium. Therefore, the disease in the rice plant can be prevented by application of potassium, and yields of rice may increase.3 . The K2O/N ratio in the rice plant was greatly affecte by the ratio of available potassium to nitrogen in the soil, and the rice yields were closely related to the K2O/N ratio in the rice plant at the active tillering stage.4.On the basis of our observation, the symptoms of this disease have some differences from the several types of Akagare and Chi-Ku disease which had been reported by many workers in Japan and China respectively.The main difference was that the midrids and side-vein near the tip of the leaf blade of the affected plant at first turned dark brown, then tiny brown spots spread to the mesophyll between the veins. Finally, the mesophyll, as mentioned above turned light yellow or greyish white, but the veins still remained dark brown, as a result, it can be seen that the diseased leaf blade appeared with streaks of brown altematng with yellow(or white). In order to distinguish this type of Chi-Ku disease from the several types of Akagare and Chi-Ku disease, it is called a Streaked Type Chi-Ku disease.5.Under the microscope observation, it was revealed that the brown materials were only produced in the mesophyill of the diseased leaf, and the bundle, vascular bundle sheath and bulliform cells had not changed in colours.

条纹型水稻赤枯病在广东梅县已发生多年,一直被误认为是土壤反酸和缺少氮肥所致,因而采取施用石灰和大量化学氮肥,结果反使病情加重,产量下降,有时甚至失收。为查明该病发生之原因及对其发病的特征进一步观察,作者对发病土壤和稻株进行了化学分析,并取土进行了盆栽试验。研究结果表明:(1)发病土壤和植株严重缺钾。(2)凡发病的植株,其叶片(顶叶往下第3片叶)的K_2O/N值在0.42以下,可溶性氮与蛋白氮之比率在0.8%以上,而正常植株的叶片K_2O/N值则在0.5以上,可溶性氮与蛋白氮之比率在7.1%以下。施钾能提高叶片的K_2O/N值及蛋白氮含量,降低可溶性氮含量,对于防治该病及水稻的增产均具有显著的效果。(3)稻株的K_2O/N值受土壤速效钾、氮比值的支配,两者呈显著的二次曲线相关。而水稻产量则与分蘖盛期植株的K_2O/N值关系密切,植株K_2O/N值过低或过高,都不能获得最高产量。(4)本研究发现的赤枯病,与目前文献报道的几种类型水稻赤枯病在一些症状上有较大的差异。而主要区别在于这种病害的发生,首先是叶尖的中脉与侧脉先后变成黑褐色,然后在变色的叶脉两侧出现褐棕色的针尖状小斑点。最后叶脉间的叶肉组织变成淡...

条纹型水稻赤枯病在广东梅县已发生多年,一直被误认为是土壤反酸和缺少氮肥所致,因而采取施用石灰和大量化学氮肥,结果反使病情加重,产量下降,有时甚至失收。为查明该病发生之原因及对其发病的特征进一步观察,作者对发病土壤和稻株进行了化学分析,并取土进行了盆栽试验。研究结果表明:(1)发病土壤和植株严重缺钾。(2)凡发病的植株,其叶片(顶叶往下第3片叶)的K_2O/N值在0.42以下,可溶性氮与蛋白氮之比率在0.8%以上,而正常植株的叶片K_2O/N值则在0.5以上,可溶性氮与蛋白氮之比率在7.1%以下。施钾能提高叶片的K_2O/N值及蛋白氮含量,降低可溶性氮含量,对于防治该病及水稻的增产均具有显著的效果。(3)稻株的K_2O/N值受土壤速效钾、氮比值的支配,两者呈显著的二次曲线相关。而水稻产量则与分蘖盛期植株的K_2O/N值关系密切,植株K_2O/N值过低或过高,都不能获得最高产量。(4)本研究发现的赤枯病,与目前文献报道的几种类型水稻赤枯病在一些症状上有较大的差异。而主要区别在于这种病害的发生,首先是叶尖的中脉与侧脉先后变成黑褐色,然后在变色的叶脉两侧出现褐棕色的针尖状小斑点。最后叶脉间的叶肉组织变成淡黄(或灰白)色,而叶脉保持褐色,结果使发病叶片呈褐黄(或白)相间的条纹状。为区别于其它类型赤枯病,拟称

The pot and field experiments in different kinds of soil have been made for two years in our provience.The results show that reasonable application of chemical potassium fertilizers have given good effects on the yield and quality of potato tuber and have increased the disease resislance of the plant.And these effects are related to the content of rapidly available potassium in the soils and the quantity of plant asia in the manure applied.Generally,when the content of rapidly available potassium in the soils...

The pot and field experiments in different kinds of soil have been made for two years in our provience.The results show that reasonable application of chemical potassium fertilizers have given good effects on the yield and quality of potato tuber and have increased the disease resislance of the plant.And these effects are related to the content of rapidly available potassium in the soils and the quantity of plant asia in the manure applied.Generally,when the content of rapidly available potassium in the soils is more than 30mg k/100g soil or there is a huge amount of plant ash in the manure applied,the efficiency of chemical potassium fertilizers is not so obvious.

通过两年在几种不同土壤上所进行的田间试验及盆栽试验,表明合理施用化学钾肥对马铃薯块茎的产量、品质以及对马铃薯的抗病性均产生有利影响。但其肥效与土壤速效钾含量及农肥中草木灰的数量有关。一般当土壤速效钾(K)大于30mg/100g±或所施农肥中含有大量草木灰时肥效就不明显。

It was found that the contents of the quick-acting and the slow-acting potash of the soil were generally higher by determining the contents of the quick-acting and the slow-acting potash of 277 samples of various soil types in the east and middle parts of Jilin province. The content of the quick-acting potash of the soil was lower in parts of the paddy fields of the east part of the province (less than 70 ppm k) , and the slow-acting potash content was also lower.Therefore the paddy field in the east part was...

It was found that the contents of the quick-acting and the slow-acting potash of the soil were generally higher by determining the contents of the quick-acting and the slow-acting potash of 277 samples of various soil types in the east and middle parts of Jilin province. The content of the quick-acting potash of the soil was lower in parts of the paddy fields of the east part of the province (less than 70 ppm k) , and the slow-acting potash content was also lower.Therefore the paddy field in the east part was the major field for distributing and applying potassium fertilizer.The interrelation between the quick-acting potash and the slow-acting potash was very obvious in the soil of the province (r = 0.693**) .Consequently, when testing the soil And applying the fertilizer, only determining the quick-acting potash was needed.The differences of the potash contents in various soil types were less, and each type included the soils with higher or lower potash Contents.The potash-offering level of the soil could not be distinguished according to the soil types. It was reasonable to judge the potash-offering level of the soil according to the content of the quick-acting potash of the soil determined.

对吉林省东、中部277个各种不同类型的土壤进行速效钾和缓效钾含量的测定,确定了我省土壤速效钾和缓效钾含量一般都较高。速效钾含量较低的主要为东部的部分水田土壤(<70ppmk),其缓效钾含量也较低,为我省钾肥分配和施用的重点。我省土壤中速效钾与缓效钾之间的相关极显著(r=0.693),因此在测土施肥时一般只测定速效钾亦可。各种类型土壤的钾含量差异较小,都有含钾较高和较低的土壤,因此不能单按照土壤类型来区分土壤的供钾水平,以根据土壤速效钾测得值来判断较为合理。

 
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