水土保持学报2011，Vol.25Issue(2)：10-14,5.
控释肥对坡地农田地表径流氮磷流失的影响
Effect of Controlled Release Fertilizer on Nitrogen and Phosphorus Runoff Losses from Farmland in Slope Field
摘要
Abstract
Experiment was conducted in rainy season between May and September 2010. The laws and characteristics of ammonium nitrogen, nitrate nitrogen, particulate nitrogen and phosphorus, total nitrogen and phosphorus difference of two fertilizers were analyzed under different slopes of peanut growing season. The results showed that compared with common fertilizer, in the early reproductive stages, the nutrient loss content of controlled-release fertilizer was lower, ammonium nitrogen content was 5.0％～74.2％ lower and nitrate content of 3.9％ ～37.0％, soluble phosphorus content was 7.1％～94.1％. In the later growth period,particulate nitrogen and phosphorus content of CRF increased in varying degrees. But in the entire monitoring period, the total nitrogen and phosphorus content of CRF treatment were lower than CCF. In addition,in different slopes, as the slope increases, the change of nutrient content of common fertilizer and controlledrelease fertilizer was 15°＞10°＞5°＞0°. This indicates that, under conditions of the sloping land controlledrelease fertilizer could maintain high nutrient content and conducive to nitrogen and phosphorus absorption,reduce the nutrient loss and reduce negative effects of nonpoint source pollution on the agricultural environment in whole growth of peanut.关键词
控释肥/坡耕地/地表径流/氮磷流失Key words
controlled release fertilizer/ slope field/ runoff/ nitrogen and phosphorus loss分类
农业科技引用本文复制引用
王艳华,邱现奎,胡国庆,董元杰..控释肥对坡地农田地表径流氮磷流失的影响[J].水土保持学报,2011,25(2):10-14,5.基金项目
国家"十一五"科技支撑计剃项目(2006BAD10B07) （2006BAD10B07）
国家"948"项目(2011-G30) （2011-G30）
