水肥耦合对玉米生长期间石灰性土壤磷形态的影响  

Effects of Water and Fertilizer Coupling on the Phosphorus Forms in Calcareous Soil during Corn Growth

作　　者：刘秀珍[1] 梁小宏[1] 马骏[1] 李洁静[1] 

机构地区：[1]山西农业大学资源环境学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2008年第2期113-116,共4页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：山西省科技攻关项目(002016)

摘　　要：研究了不同水肥配比条件下玉米生长期间土壤磷素形态的变化,结果表明:在同一水分条件下,随着施磷量的增加,土壤中的速效磷、Ca-P都呈增加趋势。同一磷肥条件下,轻度水分胁迫和适宜水分有利于土壤磷素向速效磷和Ca2-P转化,水分胁迫则加速土壤磷向缓效或无效态转化。The Change in soil phosphorus forms during corn growth under different proportions of water to phosphorus was studied.The results showed that under the condition of identical moisture content,the contents of available phosphorus and Ca-P increased with the increase of phosphorus fertilization.Under the condition of same phosphorus fertilization,mild forces and the suitable moisture content were advantageous for the soil phosphorus transforming to the available phosphorus and the Ca2-P,and the forces of moisture content accelerated soil phosphorus transforming to potential phosphorus or unavailable phosphorus.

关 键 词：石灰性土壤 玉米 水肥耦合 磷形态 

分 类 号：S158[农业科学—土壤学]