您要查找的是不是：
- Soil fungi number and urease activity were negative correlation with soil available potassium content. 土壤真菌数量、脲酶活性与有效钾含量呈负相关。
- Soil Available Potassium Status and Its Regional Distribution at Main Arable Land in Liaoning Province 辽宁省主要耕地土壤速效钾含量及其区域分布状况
- soil available potassium 速效钾
- Study on Adsorped Character of Soil Available Potassium and Availability of Potassium Fertilizer in High yield Cotton Field lf Xinjiang 新疆高产棉区棉田土壤有效钾的吸附特征和钾肥有效性的研究
- It has been shown that farmland consolidation causes a big change of available phosphorus, available potassium and active organic matter in soil. 调查和分析结果表明 ,土地整理前后土壤中速效磷、速效钾和活性有机质均发生明显变化 ;
- Long-term application of chemical fertilizers or organic manures the nutrient contents in soil was increased, except available potassium. 施用化肥或有机肥除有效钾外，土壤养分均有增加。
- The experiments of potassium nutrition in papaya (Carica papaya L.) showed that leaf blight was caused by available potassium deficiency in soil where papaya was planted. 摘要对番木瓜叶枯病与植株营养、土襄相关养分的关系等进行研究，结果表明，番木瓜叶枯病是由于土壤有效钾缺乏而导致的一种生理性缺钾症；
- The available nitrogen and phosphorus contents in root rhizosphere were greater than those in bulk soil, while its content of the available potassium was lower. 根际碱解氮和有效磷含量高于非根际土壤，其速效钾含量却低于非根际土壤。
- The slowly available potassium was increased, especially in cotton florescence. 腐植酸提高土壤缓效钾含量的作用主要表现在棉花花铃期；
- The content of organic matters, available phosphor, available potassium and alkali-hydrolyzable nitrogen in the capsicum rhizosphere soil was less than those of capsicum non-rhizosphere. 各处理根际土壤有机质、有效磷、有效钾含量均低于非根际土壤，但碱解氮含量表现为根际土壤高于非根际土壤。
- In addition, soil organic matter, alkali-hydrolyzable-N, available potassium and available phosphorus were main factors of energy and nutrition for growth and activities of microorganism. 土壤有机质、碱解氮、速效磷和速效钾是微生物生长和活性的主要能源和营养因子。
- The content of soil available Sulphur was decreased after harvesting cole and radish. 另外种植油菜和四季萝卜的土壤，有效硫的含量较种植前略下降；
- Activities of polyphnol oxidase and urease have negative correlation with organic matter, available nitrogen, available phosphorus and available potassium. 而多酚氧化酶和脲酶活性与土壤有机质，氮、磷、钾的有效性呈负相关。
- And the increase rates of soil available phosphorus and slowly available phosphorus were MCSWFC＞CSU＞SFC. 土壤速效磷、缓效磷的增幅均为田菁水植养鱼处理＞田菁旱作处理＞蓄淡养鱼处理。
- Compared with CK, soil available P increased by 10-fold and 3-fold with the treatment of NPKM and NPK+straw, and 3-5 fold with NP, PK and NPK. 氮磷钾配施有机肥速效磷含量比不施肥增加10倍以上,而氮磷钾配施秸秆比对照增加3倍;
- Soil culture results showed soil available sulphur had been increased significantly after different sulphur ferti1izer were appl ied. 土壤培育试验结果表明，不同硫肥品种施入土壤后，土壤有效硫含量明显升高，在培育1周时有效硫含量达到最高值，并随着培育时间的延长，土壤有效硫含量表现出先升高而后降低的趋势；
- 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. 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。
- The result showed that the soil available N content of the vineyard a low and in grade 5 while that was in grade 3 in the kaleyard. 结果显示：东丽区葡萄园的速效氮含量较低，处于5级；
- Soil available water capacity (AWC) plays an important role in the evaluation of drought resistance of soil,planning and managing water resources and conducting irrigation. 土壤有效含水量(AWC)是评价土壤抗旱性、水资源规划和管理以及指导灌溉的重要依据。
- Rhizospheric soil available N, enzyme activities and bacteria related to N transformation under drought stress in two genotypes of maize were investigated with a pot experiment. 摘要通过盆栽试验，研究了干旱胁迫下两基因型玉米根际有效态N及其两种相关酶活性和细菌的变化。
