Abstract: [Objective and Method]The aim of this text was mainly to study effects of DAP and TSP fertilizer different levels on the total P and available phosphorus in cotton-field soil at all growing stage.[Result]The results showed that phosphate fertilizer can increase soil available phosphorus, total phosphorus content different levels of phosphorus in the cotton seedling-stage and budded-stage the soil of application TSP were significantly more than DAP at soil total phosphate and available phosphorus; In the all growing stage of cotton , there were no significant difference between the cotton plant applied with DAP all levels and TSP(P_2O_5) at 75,150 and 300 kg/hm~2 levels and the cotton plant without aplication of phosphorus fertilizer.[Conclusion]So advice was given that application of phosphorus 150 kg/hm~2 could meet the needs of cotton plant.

摘要： [目的]提高棉田磷肥利用率.[方法]磷酸二铵、重过磷酸钙两种肥料不同施肥水平在棉花各生育期对土壤全磷和有效磷的影响.[结果]施磷可以增加土壤有效磷、全磷含量;不同施磷水平在棉花苗期、蕾期重过磷酸钙对土壤有效磷、全磷的影响显著超过磷酸二铵;在棉花各个生育时期,磷酸二铵各水平、重过磷酸钙施P_2O_5 75、150和300 kg/hm~2与不施磷相比土壤有效磷差异不显著.[结论]建议施磷量为150 kg/hm~2即可满足棉花需要.