土壤有效钾,Soil available potassium
1)Soil available potassium土壤有效钾
2)soil available potassium土壤速效钾
英文短句/例句

1.Quick-acting Potassium Status of Farmland in Ankeng and Effects of Adding Potassium安康耕地土壤速效钾现状与钾肥效应
2.Spatial and Temporal Variation of Soil Available Potassium in the Field of Wheat-rice Double Cropping;稻麦两熟农田土壤速效钾时空变异及原因分析
3.Effect of free air carbon-dioxide enrichment on soil available K in rice-wheat rotation system开放式空气CO_2浓度升高对水稻/小麦轮作土壤速效钾的影响
4.Convertibility of the Data Determined by ICP-AES and FAAS for Soil Available K and NaICP-AES法与传统FAAS法测定土壤速效钾和钠的数据可转换性研究
5.Using NIRS to Predict the Content of Available Nitrogen, Phosphorus and Potassium in Soil近红外光谱法快速测定土壤碱解氮、速效磷和速效钾含量
6.Study on the Spatial Variability of Soil Available Phosphorus and Available Potassium in Populus Tomentosa Planted Land in Western Plain of Shandong Province鲁西平原毛白杨造林地土壤速效磷和速效钾空间变异性研究
7.Effects of Organic Manure Application on the Content of Available Phosphorus and Potassium in Tobacco-growing Soil施用有机肥对植烟土壤速效磷和速效钾含量的影响
8.Effects of water conditions on available potassium contents in red soil and yellow-cinnamon soil不同水分状况对红壤和黄褐土速效钾含量的影响
9.Advance in comparison on determination of available nitrogen, phosphorus,potassium in soil by ASI method and its correlation with fertilizer absorptionASI法测定土壤速效氮磷钾的方法比较及相关性研究进展
10.Spatial variability of soil available N,P and K and influencing factors土壤速效氮、磷、钾含量空间变异特征及其影响因子
11.The soil organic matter and total N stabilize basically, available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation.玉米、稻连作土壤有机质和全氮基本稳定,有效磷呈上升趋势,碱解氮和速效钾下降趋势明显。
12.STUDY ON THE CRITICAL VALUE AND SUITABLE AMOUNT OF QUICK-ACTING POTASSIUM IN MEADOW SOIL草甸土速效钾临界值及适宜施钾量的研究
13.Effect of long-term potassium application on irrigated soil potassium and on the yield and nutrient of crops灌淤土区长期施钾对作物产量与养分及土壤钾素的长期效应研究
14.Study on Determination Methods for Available Nitrogen and Potassium in Soil Testing and Fertilizer Recommendation;测土配方施肥中土壤有效氮钾测定方法研究
15.Study of the Available Nutrient Use Efficiency of Phosphorus and Potassium in Red Soil, Fluvo-aquic Soil and Black Soil;红壤、潮土、黑土中磷钾有效养分利用系数研究
16.Ammonium sulfate and potassium sulfate were used as sources of N and K because these sources are more efficient in these soil conditions.用硫酸铵和硫酸钾作氮和钾肥源因其对该土壤条件更有效。
17.Study on Soil K-supplying Potential and Potassium Application Effect on Red Soil and Yellow Cinnamon Soil under Different Planting Patterns不同种植方式下红壤和黄褐土的供钾能力与施钾效果研究
18.Effect of Several Nitrogenous and Potassium Fertilizers on Availabilities of Plumbum and Cadmium in Plumbum or Cadmium Polluted Soil;不同氮钾肥对铅镉污染土壤铅镉有效性的影响
相关短句/例句

soil available potassium土壤速效钾
3)soil available K and slow-release K土壤速效钾和缓效钾
1.Geostatistical methods were applied to estimate the spatial distribution of soil available K and slow-release K contents.结果表明,研究区域内的土壤速效钾和缓效钾含量都存在极强的空间相关性,在整个区域的空间分布具有相似性。
4)Soil available phosphorus土壤有效磷
1.Our main aim was to investigate small-scale spatial cross-correlation between population variables of clonal plant species and soil available phosphorus.该研究主要探讨小尺度上克隆植物与土壤有效磷之间的空间相关性,特别是它们的相似性。
2.Arbuscular mycorrhizal development of 12-year-old Ginkgo biloba(Jiafushou seedlings and Jiafushou/Jiafushou grafted plants) and its correlation with soil available phosphorus were observed in the experiment in field.以田间栽培的12a生银杏(Ginkgo biloba)实生苗"家佛手"和本砧嫁接的"家佛手"嫁接苗为试材,观察根系丛枝菌根的状况及其与土壤有效磷的关系。
3.【Objective】 The objective of this study was to explore the spatial distribution of soil available phosphorus, and to provide a firm foundation for scientific formulated fertilizer and identify key regions for controlling agricultural non-point phosphorus pollution.【目的】探明土壤有效磷的空间分布,为合理科学配方施肥和识别农业面源磷污染重点控制区提供依据。
5)soil available Se土壤有效硒
6)soil available water土壤有效水
1.The soil water regime in diifferent irrigation conditions was studied by ASI(index of soil available water) method.对不同灌溉模式下的土壤水分状况用土壤有效水指数法[1]进行了研究,计算出各模式下土壤月初有效水含量及土壤供水量。
延伸阅读

土壤氮素有效性指标土壤氮素有效性指标availability index of soil nitrogen i城氮素有效性指标(availability inae二。f5011 nitrogen)土城氮家中能转化成为植物可以直接吸收的那一部分氮t的相对t度.测定土城氮素有效性指标的主要目的是:①相对比较不同土坡的矿化能力。②预侧土城对作物的供氮里,以便为确定适宜的抓肥施用t提供基本的参数.通常用生物学培养法、化学提取法及lsN同位家稀释法进行侧定. 生物学培养法分为直接法和间接法两种.直接法是广泛采用的方法.即侧定土坡在一定的培养条件(适宜的土城含水t、沮度和时间)下培养后,土城无机态氮t比堵养前的增加t。由于培养时土城含水t的不同,所侧定的无机态氮的形态也不同.在土城含水t为饱和或过饱和状态(嫌气)下培养时,只侧定文换性按态氮。而在土坡含水t为不饱和状态下进行好气培养时,则摇同时侧定硝酸态氮和交换性按态氮.不同培养条件下所侧得的结果有很大的差异,因而难以互相比较。此外,土城样品在培养前的处理方法(干澡和磨碎的程度,以及样品的储存方法和时间等)对测定值也有很大的影响。直接培养法常被用来作为标准法以检脸化学提取法。间接法是将无氮培养液或不含氮的易分解性有机物质加入土城中,经培养一定时间后测定某些徽生物(如黑曲.)的生长t或二氧化碳的释放t等.这一类方法很少被采用. 化学提取法按提取剂的种类可以分为水提取法、盐提取法、酸提取法(包括高锰酸钾酸性溶液提取法)和旅提取法(包括商锰酸钾碱性溶液提取法)。按提取的强烈程度则可分为弱提取法、中度提取法和强提取法。侧得的结果都称为水解氮.除研究氮素形态者外,多采用弱提取法.显而易见,不同水解方法的侧定值可以有很大的差异。与培养法相比,化学提取法的侧定值受土集样品在培养前处理方法的形响较小.但是,土镶有机态氮的化学提取性与生物分解性之间并无内在的联系。现有的任何一种化学提取法都是经验性的,即以直接培养法,以及盆栽或田间试脸的结果作为标准项,通过相关分析筛选出来的. lsN同位素稀释法在进行作物栽培试验时,加入标记氮肥,以侧定土坡的有效氮t的相对值,称为A值(或称A,值)法.此法的羞本假设是,标记肥料氮与土城氮家中活性与肥料氮相当的一部分氮呈一均质体.作物将按此均质体中标记氮与非标记氮的比例吸收氮素,因此可按下式计得A值: A=M .5/F式中A为土城中活性与肥料氮相当的一部分氮素的数t,M为加入的标记肥料氮t;S为作物吸收的土壤氮t,F为作物吸收的肥料氮t.侧得的A值受到供试作物的种类、其它养分的供应水平、氮肥的形态和施用方法等的影响. 常用的侧试方法一般只能半定t地预侧土城对作物的供氮量(以成熟时作物地上部分解积的氮t计).这是因为这些方法大多只能给出土坡可矿化氮t的一个相对值,而难以对田间条件下许多因素对土坡有机氮矿化的影响作出定t的估计.对土城有机氮矿化的预侧常限于耕层,而未对其下土层的土坡在作物生长期间的氮家矿化量作出定量的估计.同时即使是在不施氮肥的情况下,作物吸收的氮素中也有一部分并不是由土坡提供的。例如由降水和灌水提供的氮,非共生固氮作用提供的氮等. (朱J匕良蔡贵信)