农业环境科学学报2012，Vol.31Issue(5)：977-983,7.
种植年限对设施菜田土壤剖面磷素累积特征的影响
Effects of Cropping Years on the Characteristics of Phosphorus Accumulation in Soil Profiles Under Greenhouse Vegetable Production
摘要
Abstract
Based on the collective data from field surveys in intensive vegetable greenhouses in Shouguang, Shandong, the study was aimed to investigate the differences of phosphorus( P) input and soil P accumulation in greenhouse production with different cropping years, and compare the variation in the contents of total P(TP), organic P, inorganic P, Olsen-P and CaCl2-P in soil profile. The results showed excessive P accumulation was the typical characteristics in greenhouse field due to the use of animal manure and compound fertilizers with high P content and the removal of very P amount by vegetables, only accounted for 7.2% of total P input. Planting age increased the extent of P accumulation in greenhouse, and P surplus increased the concentrations of soil P in different forms, especially inorganic P, in soil profile. A positive correlation was significantly evident between the contents of Olsen-P, which indicated soil available P supply, and CaCl2-P, which was regarded as the index of P runoff; In the surveyed region soil CaCl2-P level significantly increased while soil Olsen-P content increased up to 80.4 mg·kg-1 in soil, which rapidly accelerated the high risk of P loss to environment.关键词
设施菜田/全磷/Olsen-P/CaCl2-P/种植年限/磷淋溶拐点Key words
greenhouse vegetable/ total P/ Olsen-P/ CaClz-P/ planting years/ P leaching point分类
农业科技引用本文复制引用
张经纬,曹文超,严正娟,陈清,李俊良..种植年限对设施菜田土壤剖面磷素累积特征的影响[J].农业环境科学学报,2012,31(5):977-983,7.基金项目
公益性行业(农业)科研专项(201103003) （农业）
现代农业产业技术体系北京市果类蔬菜创新团队项目 （）
