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矿物钾的
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  mineral k
     Studies on the Uptake of Mineral K by Mixed-plantings of Poplar and Black Locust Under K-deficiency
     杨树、刺槐混交及缺钾情况下对矿物钾的利用
短句来源
     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
     The results show that the straw returning combination to fertility improves release of slow-release K and available K, and availability of mineral K.
     结果表明,长期秸秆还田并配施适量的化肥,能明显提高潮土缓效钾和速效钾的释放效应,对矿物钾的有效化也有一定效果。
短句来源
     In the exhausted condition -non-application of K-fertilizer for 14~18 years, straw plus NP could supply with available K timely, but speed up the natural release rate of mineral K.
     在连续14~18年不施任何化学钾肥的耗竭状态下,秸秆还田能及时补给有效钾的损耗,但却促进了矿物钾的自然释放速率。
短句来源
     In the exhausted condition of without K for 14~18 years,straw plus NP could supply with available K timely,but speed up the natural release rate of mineral K.
     在不施任何化学钾肥14~18 a的连续耗竭状态下,秸秆还田能及时补给有效钾的损耗,但却提高了矿物钾的自然释放速率。
短句来源
  “矿物钾的”译为未确定词的双语例句
     Effect of Soybean and Wheat on the Mobilization of Mineral Potassium
     大豆和小麦对矿物钾的活化作用研究
短句来源
     UPTAKE OF POTASSIUM IN SOIL AND MINERAL BY GRAIN AMARANTH (Amaranthus spp.)
     富钾植物籽粒苋(Amaranthus spp.)对土壤矿物钾的吸收利用研究
短句来源
     Activating ability in root secretions of tobacco to mica mineral potassium is greater than the potassium feldspar.
     烟草根际分泌物对云母矿物钾的活化能力大于钾长石;
短句来源
     In soil seedling depletion experiment, the ratio of absorbing mineral Potassium is highest, the next slow-release Potassium and the lowest is available Potassium.
     甜玉米吸钾能力弱,钾积累量少。 土壤幼苗耗竭条件下,玉米吸收矿物钾的比例最大,其次为缓效钾,速效钾比例最小。
短句来源
     Pot experiments with corn seedlings on fluvo-aquic and cinnamon soils showed that dry plant matter, uptake of potassium by plants, and potassium contents in plant were affected by the amount of soil available potassium.
     运用玉米苗对褐土、潮土不同层次土壤进行了钾素生物耗竭试验 ,发现 :当土壤有效钾素趋向匮乏时 ,首先受到影响的是玉米苗的干生物产量 ,其次是植株总吸钾量 ,再其次才是植株含钾量 ; 矿物钾对植株吸钾是有贡献的 ,但其贡献率因土壤不同而有很大的差异 ,褐土矿物钾的贡献率比潮土的要大 ;
短句来源
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  相似匹配句对
     Effect of Soybean and Wheat on the Mobilization of Mineral Potassium
     大豆和小麦对矿物钾的活化作用研究
短句来源
     Potassium Absorption and Biological Mobilization from Soil Minerals by Ectomycorrhizal Fungi and Ectomycorrhizas
     外生菌根吸收和活化利用土壤矿物钾的研究
短句来源
     PRECIOUS STONES OF THE CORUNDUM MINERAL GROUP
     刚玉宝石矿物
短句来源
     THE EVOLUTION, OF MINERALS
     矿物演化
短句来源
     SYNTHESIS OF ACESULFAME POTASSIUM
     乙酰磺胺酸钾的合成
短句来源
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  mineral k
ago and is probably the same event that lowered mineral K-Ar and ages in the region.
      
Release of mineral K was significantly stimulated by maize, pak-choi and ryegrass, implying a direct mobilization of mineral K by plant roots.
      
The net release of mineral K was greatly influenced by plant species.
      
Among these, the more profound release of mineral K was observed with maize and ryegrass.
      
Besides, the mobilization of mineral K was negatively correlated with the particle size of gneiss.
      
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Electro-ultra-filtration (EUF) method, chemical analysis and estimate of potassium depletion have been used for further study of the potassium supply of the main soils in Sichuan. The amount of potassium in soil solution is significantly correlated to the values of Q and I+Q. The amount of slowly available potassium is also greatly correlated to the values of Q, I+Q, CD and AB/CD. where values for Q, I+Q, CD and AB are respectively desorbing K of 10—35 min, 0—35 min, 30—35 min and 5—10 rain. In the potassium...

Electro-ultra-filtration (EUF) method, chemical analysis and estimate of potassium depletion have been used for further study of the potassium supply of the main soils in Sichuan. The amount of potassium in soil solution is significantly correlated to the values of Q and I+Q. The amount of slowly available potassium is also greatly correlated to the values of Q, I+Q, CD and AB/CD. where values for Q, I+Q, CD and AB are respectively desorbing K of 10—35 min, 0—35 min, 30—35 min and 5—10 rain. In the potassium depletion, the cold sand yellow mud has the highest value of AB/CD, the next is Lesan red sand soil, the last one is the oreson yellow mud. When they are in Ⅰ(0—10min), the fresh absorption of potassium is the largest. In the former first two crops from a crop rotation system, the release of potassium from soil is faster and more during the early and middle period of plant growth, but is not sufficient in the late. period, because of the poor capacity of soil to supply potassium. In the potassium depletion, brown purple mud, red brown purple mud and dark purple mud have the lowest AB/CD and Ⅰ value but high CD(buffer capacity)value and with sufficient potassium present in the soils. So the three kinds of soils belong to high capacity of soil to supply potassium. EUF is a useful method in predicting potassium status of the soils and the capacity of soils to supply potassium.

用电超滤、化学测定和钾耗竭法,对四川省13种土壤供钾状况进行研究。结果表明:土壤速效钾与10-35min(Q)、0-35min(I+Q)解吸的钾呈显著正相关;缓效钾与Q、I+Q、30-35min(CD)和5-10min(AB)/CD的值呈显著或极显著正相关。在钾耗竭中,以冷沙黄泥的AB/CD值最大,乐山红沙土次之,矿子黄泥居第三。它们在I(0-10min)时解吸的钾量最大。前两季土壤钾释放快而多,但后劲不足,仍属供钾能力差或较差的土壤。棕紫泥、红棕紫泥、暗紫泥的电超滤值AB/CD、I最小,但CD大,且土壤含钾丰富,在钾耗竭中均属供钾能力最强的土壤。作物产量与吸钾量相关性极显著,与土壤速效钾相关性显著,与缓效钾相关性极显著。钾耗竭随着作物种植次数而增加,更加依赖缓效钾的供应和矿物钾的释放。电超滤法可作为土壤钾素状况研究和土壤供钾能力评定的较好方法。

Studies on response of crops to potassium, and use of fertilizer- and soil- potassium in soils with different potassium supply potentials were made with successive cropping.

用生物耗竭试验法研究了在不同供钾潜力土壤上,植物对钾肥的反应,植物对土壤钾和肥料钾的利用。不同供钾潜力土壤的钾素有效性是不同的,通过植物吸收,速效钾和缓效钾均有不同程度的降低,植物吸钾量中部分来自矿物钾,但矿物钾释放量只占矿物钾总量的0.04—1.58%。矿物钾的释放很慢,不能满足植物迅速生长的需要。用阳离子树脂袋法和其它化学方法与生物法进行了比较。用树脂袋法和生物法测得的矿物钾释放量,二者接近。树脂袋法的提取量同水稻和大米草吸钾量也很接近,而且二者的相关性均达到0.916。树脂袋法较生物法简便。

In this paper, the kinetic methods used in studying the release of inter-layer K of soil minerals are grouped and commented on, and the rate of K-release and the affecting factors as well as the kinetic mechanisms are reviewed in more detail.

本文就业已用于研究土壤矿物层间钾释放的动力学方法进行了归类和评述,并对钾的释放速率及其影响因素,以及钾的释放动力学机理作了相对详细的综述。研究者们的结果表明,粒径小的土壤颗粒钾的释放速度比大者快;三八面体硅酸盐矿物比二八面体的释放速度大。云母族矿物钾释放速度序为:铁质黑云母(三八面体)>镁质金云母(三八百体)>白云母(二八面体),它们的释放量与时间的平方根成线性关系。Martin的试验结果表明,供试土壤层间钾的释放速度可用一阶扩散方程很好地描述。氢离子浓度过高时(pH<3),会导致粘粒结构的破坏,从而加快了钾的释放速度。温度(T)、淋洗速度(L)和盐浓度(N)与钾的释放速度(r)的关系可表达为r=k(L△TN~(1/2))。钾的释放过程中涉及了多种动力学机理,其中层间扩散是钾释放中非常基本的机理。

 
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