潮土定位试验施肥对土壤养分变化及环境质量监测研究 Ⅱ施肥对土壤剖面NO_3-N动态变化的影响  

Study of Fertilization on Variations of Soil Natrienes and Evrionmental Quality with Long-term Location Field Experiment in Chao Soil Ⅱ.Effect of fertilization on dynamics changes of NO 3-N in soil profile

作　　者：张鸿程[1] 宝德俊[1] 皇甫湘荣[1] 黄绍敏[1] 靳秋生 

机构地区：[1]河南省农科院土肥所,河南郑州450002 [2]焦作市农科所,河南焦作454100

出　　处：《土壤通报》2002年第1期28-31,共4页Chinese Journal of Soil Science

基　　金：农业部 95农 (高科 ) 1 7 0 3 0 1项目 ;专题名称"不同耕作制度下主要农区土壤肥力与肥料效益演化规律"

摘　　要：潮土肥力定位试验进行过程中 ,于 1994年探讨土壤剖面NO3 -N不同时空动态分布以及对作物产量、环境质量和地下水质的影响。结果表明 :NPK平衡施肥与有机、无机肥配施 ,在本试验的施肥水平和配合比例条件下 ,小麦—玉米(大豆 )轮作制获得较高的产量。单施N、NK的土壤剖面中NO3 -N含量经常处于超标状态 ,构成了对土壤环境和地下水质的污染。降水、灌溉水量、N肥用量以及肥料利用率是影响土壤NO3 -N淋洗。Effects of fertilization on crop yield,dynamics of NO 3-N in 1 metre profile,soil environment and groungwater quality from 1994.The results showed that among 10 fertilization treatments balanced fertilization and chemical fertilizer with organic manure were more effective for increasing the yield of wheat and corn(bean).The contents of nitrate in soil profile in the treatments of N and NK were usually between 100～180mg/kg,exceeded the permitted content,which had polluted the soil environment and groundwater.Rainfall,irrigation rate,N fertilizer application rate and utilization ratio were the main factors affecting NO 3-N leaching and accumulation.

关 键 词：施肥 NO3-N 动态变化 环境质量监测 土壤养分 潮土肥力定位试验 土壤剖面 

分 类 号：X833[环境科学与工程—环境工程] S147.2[农业科学—肥料学]