摘要
土柱淋溶模拟实验研究不同种类磷肥施用对磷素淋失的影响.结果表明,施用等磷量的过磷酸钙(SSP)、钙镁磷肥(CMP)、磷铵(AP),土柱淋出液的TP、DTP浓度、累积淋失量和净损失量均表现为AP>SSP>CMP,施用3种磷肥均提高了各层土壤Olsen-P含量,Olsen-P增加量的大小顺序是AP>SSP>CMP.因此,酸性菜园在磷肥品种选择上应采用钙镁磷肥,除可以减少磷素淋失外,还可改良土壤pH,提供蔬菜生长所需的钙、镁营养.
All indoor simulating experiment was conducted with repacked soil columns for studying the effect of different phosphate fertilizers application on phosphorus leaching in vegetable soils. Results showed that the concentration and total amount of TP and DTP in the leachates of soil columns fertilized calcium super-phosphate （SSP）, calcium magnesium phosphate （CMP） or ammonium phosphate （AP） in the same amount of phosphorus were in an order： AP〉SSP〉CMP. The effects of different phosphonls fertilizers application on increasing the content of Olsen-P in every layers of soil was in the following order： AP〉SSP〉CMP. it was suggested that calcium magnesium phosphate should be used in acidic vegetable soils to reduce phosphorus leaching, improve soil pH and provide calcium, magnesium nutrition which vegetable needs.
出处
《漳州师范学院学报（自然科学版）》
2009年第1期97-100,共4页
Journal of ZhangZhou Teachers College（Natural Science)
基金
福建省科技厅重大专项(2005YZ1001)前期研究项目"农业面源污染控制与废物循环利用关键技术研究"
关键词
磷肥
蔬菜土壤
淋失
土柱
phosphate fertilizer
vegetable soil
leaching
soil column
