水土保持学报2018，Vol.32Issue(2)：252-256,5.DOI:10.13870/j.cnki.stbcxb.2018.02.037
控释氮肥侧条施用对东北地区水稻产量和氮肥损失的影响
Effects of Side Strip Application of Controlled Release Nitrogen Fertilizer on Rice Yield and Nitrogen Loss in Northeast China
摘要
Abstract
A field experiment was carried out in rice planting field in Northeast China,to investigate the effect of controlled release nitrogen fertilizer side strip application on rice yield and nitrogen losses.Five treatments were set up,including no nitrogen fertilizer as control (CK),farmer conventional fertilization (FP),high amount controlled release nitrogen fertilizer (HN),medium amount controlled release nitrogen fertilizer (MN),and low amount controlled release nitrogen fertilizer (LN).The effects of controlled release nitrogen fertilizer side strip application on rice yield,nitrogen recovery rate,agronomic efficiency,runoff loss,and total nitrogen concentration in leaching water at different levels were studied.Results showed that the grain yield in HN treatment and MN treatment that reduce 10％ to 20％ nitrogen fertilizer use show no significant change compared with that in FP treatment.The number of spikes and grain number per spike in HN treatment were 10.79％ and 15.38％ higher than that in FP treatments,respectively.When the nitrogen fertilizer was reduced by 30％ (LN treatment),the grain yield of rice was significantly decreased.In HN treatment,the recovery rate of nitrogen fertilizer increased by 5.23％,and the agronomic efficiency of nitrogen fertilizer was 6.48 kg/kg higher than that in FP treatment.Compared with the FP treatment,controlled release nitrogen fertilizer Side Strip Application treatments reduced the total nitrogen concentration and runoff loss in surface water,nitrogen loss reduction rate in HN treatment,MN treatment and LN treatment varied between 37.32％ ～ 47.10％.Controlled release nitrogen fertilizer Side Strip Application can reduced the risk of nitrogen losses,delayed both the total nitrogen concentration in the leaching water and the peak time of the total nitrogen concentration,and be considered as an environment-friendly fertilization technology that takes rice yield into account.关键词
东北地区/水稻/控释氮肥/产量/氮素损失Key words
Northeast region/rice/controlled release nitrogen fertilizer/yield/nitrogen loss分类
农业科技引用本文复制引用
刘汝亮,王芳,王开军,张爱平,李友宏,洪瑜,杨正礼..控释氮肥侧条施用对东北地区水稻产量和氮肥损失的影响[J].水土保持学报,2018,32(2):252-256,5.基金项目
水体污染控制与治理重大专项(2014ZX07201-009) （2014ZX07201-009）
国家自然科学基金项目(31660597,41401134) （31660597,41401134）
宁夏农林科学院科技创新先导资金(NKYJ-16-0904) （NKYJ-16-0904）
宁夏环保科技项目 （）
