Mineral phosphate precipitation is often recognized to limit the availability of phosphorus in acid soils of tropical and subtropical forests.
热带和亚热带酸性土壤磷矿物的沉淀通常被认为会限制土壤有效磷的供应。
The validity and availability of phosphorus in sandy soil was systematically studied using chemical analysis, bio - adsorption test and biological diagnoses.
应用化学分析、吸附试验和生物诊断方法，系统研究了风沙土磷的有效性和利用率。
Incubation and pot experiments were carried out to study the effects of organic manures on soil organic phosphorus fractions and their bio-availability.
通过培养与盆栽试验，研究了有机肥料对土壤有机磷组分及其生物有效性的影响。
The study on the transformation of applied phosphorus and availability of residual phosphorus in wheat rice rotation was conducted on calcareous soils for three years.
运用新的石灰性土壤无机磷分级方法研究了冀南麦稻轮作高产区土壤无机磷的形态，水溶性磷肥施于稻季和施于麦季土壤中的转化特性。
The relative performance of different genotypes are similar on the two tropical soils, implying that there was no obvious soil specificity for beans in response to low phosphorus availability.
不同基因型在两种热带土壤上的相时表现一致，说明菜豆对低有效磷的适应不存在着土壤特异性。
The relative performance of different genotypes are similar on the two tropical soils, implying that there was no obvious soil specificity for beans in response to low phosphorus availability.
不同基因型在两种热带土壤上的相时表现一致，说明菜豆对低有效磷的适应不存在着土壤特异性。
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