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   非交换性钾 在 农作物 分类中 的翻译结果: 查询用时:0.062秒
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  non exchangeable k
    Nitrogen application(0~150mg/kg) increased the release of soil potassium and the utilization of non exchangeable K and mineral K. In accordance with the total amount of net K uptake by rice, the contribution of non exchangeable K and mineral K accounted for 80 3%.
    施氮 (N 0~ 150mg/kg)促进 4个紫色水稻土钾素的释放 ,提高水稻对非交换性钾和矿物钾的吸收利用 ,使矿物钾和非交换性钾的贡献占植株吸钾的 80 3% ,速效钾仅为 19 7%。
短句来源
    Contibution of non exchangeable K and mineral K to K uptake by four rice cultivars accouted for 66 9% after the application of nitrogen fertilizer on average. The maximun of net K uptake by four rice cultivars were obtained at medium nitrogen level (N 150mg/kg).
    施氮后4个品种水稻吸自非交换性钾和矿物钾量平均占植物吸钾量的 66 9% ,以施中氮 (N 150mg/kg)时植株吸钾量最高 ;
短句来源
  non-exchangeable k
    The content of readily available K and non-exchangeable K in the soil remained little changed in the 0~30 days after transplanting, decreased markedly in the 30~45 days, rose again after that, reached the maximum on the 75 th day after transplanting and remained relatively stable thereafter.
    在 0~ 3 0天内 ,土壤速效钾、非交换性钾变化不明显 ,3 0~ 4 5天则明显下降 ,4 5天时达最低 ,随后逐渐回升 ,75天时达较高水平并基本稳定
短句来源
    Soil non-exchangeable K (NEK) and mineral K (MRK) were the main sources from which the absorbed K was in wheat.
    土壤非交换性钾和矿物钾是冬小麦吸收钾素的主要来源。
短句来源
    The relationships between the content of soil available N, available K, non-exchangeable K and the wheat root activities reached significant or very significant level during wheat growth.
    土壤碱解氮、速效钾、非交换性钾含量与小麦根系活力呈显著或极显著正相关,说明土壤N、K养分有效性的高低是影响小麦根系活力的重要因素。
短句来源
    The content of soil available N,available K and non-exchangeable K changed regularly with wheat growth.
    结果表明,土壤速效氮、速效钾和非交换性钾含量随小麦生育进程呈现有规律的变化;
短句来源
    The relationships between the content of soil available N,available K,non-exchangeable K and the wheat root activities reached significant or very significant level during wheat growth,this illustrated that the availability of soil N and K was an important factor that affected the wheat root activities.
    土壤速效氮、速效钾、非交换性钾含量与小麦根系活力呈显著或极显著正相关,说明土壤N、K养分有效性的高低是影响小麦根系活力的重要因素。
短句来源
  non-exchangeable k
    The content of readily available K and non-exchangeable K in the soil remained little changed in the 0~30 days after transplanting, decreased markedly in the 30~45 days, rose again after that, reached the maximum on the 75 th day after transplanting and remained relatively stable thereafter.
    在 0~ 3 0天内 ,土壤速效钾、非交换性钾变化不明显 ,3 0~ 4 5天则明显下降 ,4 5天时达最低 ,随后逐渐回升 ,75天时达较高水平并基本稳定
短句来源
    Soil non-exchangeable K (NEK) and mineral K (MRK) were the main sources from which the absorbed K was in wheat.
    土壤非交换性钾和矿物钾是冬小麦吸收钾素的主要来源。
短句来源
    The relationships between the content of soil available N, available K, non-exchangeable K and the wheat root activities reached significant or very significant level during wheat growth.
    土壤碱解氮、速效钾、非交换性钾含量与小麦根系活力呈显著或极显著正相关,说明土壤N、K养分有效性的高低是影响小麦根系活力的重要因素。
短句来源
    The content of soil available N,available K and non-exchangeable K changed regularly with wheat growth.
    结果表明,土壤速效氮、速效钾和非交换性钾含量随小麦生育进程呈现有规律的变化;
短句来源
    The relationships between the content of soil available N,available K,non-exchangeable K and the wheat root activities reached significant or very significant level during wheat growth,this illustrated that the availability of soil N and K was an important factor that affected the wheat root activities.
    土壤速效氮、速效钾、非交换性钾含量与小麦根系活力呈显著或极显著正相关,说明土壤N、K养分有效性的高低是影响小麦根系活力的重要因素。
短句来源
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From the determination of exchangeable and non-exchangeable potassium ofthe different soils in Jiangsu Province and the experiments of potash fertilizationon cotton,it was preliminarily established that bleached whitish soils in ChenjiangDistrict,the sandy and sandy loom soils along the Yangtze River and the sandysoils in Xuzhow-Huaiying District are deficient in available potassium(exchange-able K 10—20 jin/mu,non-exchangeable K 65—200 jin/mu),the K supply ofthe permeable paddy soils in Suzhow Distriet is also...

From the determination of exchangeable and non-exchangeable potassium ofthe different soils in Jiangsu Province and the experiments of potash fertilizationon cotton,it was preliminarily established that bleached whitish soils in ChenjiangDistrict,the sandy and sandy loom soils along the Yangtze River and the sandysoils in Xuzhow-Huaiying District are deficient in available potassium(exchange-able K 10—20 jin/mu,non-exchangeable K 65—200 jin/mu),the K supply ofthe permeable paddy soils in Suzhow Distriet is also low(exchangeable K 18—24jin/mu,non-exchangeable K 60—80 jin/mu),and the soils in The Lower RiverBasin and along the coast line are rich in K supply(exchangeable K 40—70 jin/mu,non-exchangeable K 200—300 jin/mu).The results from the cotton potash fertilizaton during 1973—75 had shownthat when the amounts of exchangeable K were less than 25 jin per mu,theapplication of potash fertilizer had a marked eliect in increasing cotton yield.Potash fertilization lessened the wilting disease and prevented the prematurity.Potash fertilization lessened the root diseases during the seedling stage toensure the stand in the field.Potash fertilization increased the boll wight,promoted boll opening and im-proved the fibre quality.The diagnostic technique of potassium on cotton during the square stage wasa very useful tool to decide whether the potash fertilizer should be side-dressed.

根据我们对我省不同土壤交换性钾和非交换性钾的测定以及棉花的钾肥试验,初步确定我省白土类型土壤,沿江沙土和沙壤土,徐淮地区沙土为缺钾土壤(交换性钾含量10—20斤/亩,非交换性钾65—200斤/亩),苏州地区黄泥土钾的供应也不充足(交换性钾18—24斤/亩,非交换性钾60—80斤/亩),里下河地区湖积物发育的土壤和滨海地区土壤钾的供应丰富(交换性钾40—70斤/亩)非交换性钾200—300斤/亩)。三年棉花钾肥试验指出,当土壤交换性钾含量低于25斤/亩时,施用钾肥有显著增产效果。土壤含钾水平愈低,钾肥增产效果愈显著。钾肥能减轻红叶茎枯病,防止早衰。钾肥能减轻苗期病害,保证壮苗全苗。钾肥能增加铃重,促使棉铃吐絮畅,棉花品质好。蕾期田间棉株钾素营养诊断,可作为棉花追施钾肥的参考。

In this paper, pot and field experiments with the graminaceous crop-rice as the indicator crop were carried out by using chemical methods and electroultra-filtration technique to study the relationship between the uptake of potassium by rice and potassium status of the different soils. Author′s preliminary experiment results have already proved that nonexchangeble potassium (slowly available potassium)is the main source of K taken up by rice. According to the uptake characteristic of potassium by barley and...

In this paper, pot and field experiments with the graminaceous crop-rice as the indicator crop were carried out by using chemical methods and electroultra-filtration technique to study the relationship between the uptake of potassium by rice and potassium status of the different soils. Author′s preliminary experiment results have already proved that nonexchangeble potassium (slowly available potassium)is the main source of K taken up by rice. According to the uptake characteristic of potassium by barley and rice, we have already suggested that extraction with cold 2N HNO_3 solution can beused as a rapid method for determining available potassium for the paddy soils. It is a simple and convenient method. This study indicates that when cold 2N HNO_3 extractable potassium in the paddy soil is less than in 10-12mgK/100g soil it can be considered soil deficient in available K.

本文以禾谷类作物(水稻)为对象进行盆栽和田间试验,用化学方法和电超滤法研究土壤供钾状况与水稻吸钾间的关系。作者初步试验结果已证明,非交换性钾(即缓效性钾)是水稻钾素的主要给源,根据禾谷类作物(稻、麦)的吸钾特点,我们提出用冷的2N HNO_2溶液提取法有可能作为测定水稻土有效钾的快速而简便的方法。本研究证明水稻土有效钾量小于10—12mgk/100克土为缺钾土壤。

H

测定了9个水稻品种在0.1mmol/LK_2SO_4+0.2mmol/LCaSO_4溶液中吸收2小时和4小时的K ̄+浓度和pH值的变化。结果表明溶液的pH变化与K ̄+浓度变化呈极显著的正相关,这为建立快速简便地筛选高吸钾速率水稻品种的方法提供了基础。幼苗耗竭试验表明,水稻利用土壤中的钾大部分来自非交换性钾源。各品种的吸钾总量与来自非交换性钾及1mol/LHNO_3不能提取的钾和矿物钾均有极显著的相关性,这可作为筛选吸钾能力强的水稻品种的指标。此外,还研究了不同品种对钾肥的反应。

 
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