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。
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