作者：易时来,石孝均
作者单位：西南大学资源环境学院,中国农业科学院柑桔研究所
摘要：利用原状回填土渗漏池研究了油菜生长季节氮素在紫色土中的移动特点和淋洗损失以及影响氮素移动和淋失的因素。结果表明,油菜生长期间氮素的渗漏淋失呈波浪式的变化,在移栽后的第10天、40天、90天和110天左右出现了4次淋洗峰;油菜季各处理氮素淋失总量变动在1.81~5.43 kg/hm2,平均为3.35 kg/hm2;油菜季氮素淋失量,前期(移栽后0~50天)∶中期(51~100天)∶后期(101天~收获)约为3∶1∶2。降雨量、氮肥用量、肥料品种和土壤性质影响了NO3--N在紫色土中的移动和淋失。
关键词：氮素淋失,紫色土,油菜生长季
Title: Nitrogen Leaching Loss in Growth Period of Rape in Purple Soil
Authors: YI Shi-lai,SHI Xiao-jun
Abstract: We studied transference properties and leaching loss of nitrogen in purple soils during the growth period of wheat with percolation pond.Also the factors affecting them are researched.The result shows that the change of nitrogen leaching loss was in the form of wave,and presented 4 times washing peaks on the 10th day,40 days,90 days and about 110 days after transplanting during rape growing season.The total amount of N leaching loss between 1.81~5.43 kg/hm~2,and 3.35 kg/hm~2 on average with all the treatments during rape growing season.The ratio of nitrogen leaching loss during rape growth,the earlier stage of 0~50 days after rape transplanting∶middle period∶later stage(101 days~reap) is about 3∶1∶2.Actually,rainfall,N fertilizer amount,fertilizer variety and soil properties altogether affect N transference and leaching loss in purple soils.
Key words: nitrogen leaching loss； purple soil； rape growth reason；
文献注录：易时来,石孝均. 油菜生长季氮素在紫色土中的淋失 [J]. 水土保持学报. 2006, 01: 83-86.
基金: 农业部“948”重大国际合作项目“养分资源综合管理技术的引进与中国技术体系的建立和应用(2003-Z53)”部分研究
报/刊名：《水土保持学报》，发表于2006 / 第 01 期。
文献类型： [J] （文献级别：核心刊物）
页码：第 83-86 页 / 共4 页