生态环境学报Issue(8)：1428-1431,4.
有机肥施用对珠三角菜地土壤磷污染风险的初步研究
Pollution risks of phosphorus in vegetable field soil by application of organic fertilizer
摘要
Abstract
Effect of organic fertilizer application on yield of flowering Chinese cabbage and phosphorus forms were studied in field plot experiment, and contamination risks of vegetable soil phosphorus were evaluated. The results showed that the yield and biomass did not increase while both decreased significantly by excessive application of organic fertilizer. The Fe-P and Al-P were main available phosphorus forms and accounted for more than 90%in vegetable soils. The contents of inorganic phosphorus fractions of vegetable soil were increased using of organic manure, and the larger the amount of application, the greater change of Fe-P、Al-P、Ca-P and O-P. The excessive organic fertilization will lead to the significantly increasing of Olsen-P and CaCl2-P, which will increase pollution risk of soil phosphorus. By using progressive regression analysis, it showed that there was the linear relationship between Ca-P and Olsen-P, also wise Ca-P was significantly correlated with CaCl2-P(p<0.05). The regression equation is Y1=36.95+0.622 1X and Y2=-0.102 5+0.048 6X. Ca-P was main source of soil available phosphorus in vegetable soil.关键词
有机肥/Olsen-P/污染风险/菜地Key words
organic matter/Olsen-p/pollution risk/vegetable field分类
资源环境引用本文复制引用
薛石龙,丁效东,廖新荣,李淑仪,王德汉,王荣萍..有机肥施用对珠三角菜地土壤磷污染风险的初步研究[J].生态环境学报,2013,(8):1428-1431,4.基金项目
广东省科学院青年科学研究基金项目“水溶性有机物对菜园土磷有效性的影响机制”(qnjj201011)和广东省科技计划项目“珠三角菜园土磷素淋失综合调控技术研究(2011B020309004)”和“华南菜地有机肥施用对红壤磷素淋洗低风险技术研究”(2012A020602031) （qnjj201011）
