水土保持学报2012，Vol.26Issue(6)：204-208,5.
长期定点施肥对制种玉米土壤理化性状及重金属含量的影响
Effects of Continuous Cropping System of Maize Seed Production on Soil Physical-Chemical Properties and Content of Heavy-metal in Hexi Corridor
摘要
Abstract
This paper studied the effects of continuous cropping of maize seed production on soil physical-chemical properties and contents of heavy-metal by located field experiment,the pollution degree of heavy metal was evaluated,too.Results showed that change of bulk density was small,porosity was moderate,pH value increased,soil organic matter,total P,total K,available-N and available-K increased firstly,then decreased,available-P increased.Content of Fe,Cu,Zn,Mn,Pb and Cr was not excessive,and content of Cd was seriously excessive with continuous cropping.In Hexi corridor,under long-term continuous cropping,soil physical characteristics ameliorated,pH value increased,soil nutrients increased firstly,then decreased,content of available-P was high,soil nutrients was in imbalance.Cd was seriously excessive.These caused obvious obstacles of nutrients.Accumulation ability of maize was lower.Fertilization mode should be adjusted for safety seed production.关键词
制种玉米/土壤理化性状/重金属/土壤连作/施肥模式Key words
maize seed production/physical-chemical properties of soil/soil heavy metal/continuous cropping/fertilization mode分类
农业科技引用本文复制引用
赵芸晨,秦嘉海,肖占文,徐琳..长期定点施肥对制种玉米土壤理化性状及重金属含量的影响[J].水土保持学报,2012,26(6):204-208,5.基金项目
甘肃省科技支撑计划项目 （）
甘肃省高校河西走廊特色资源利用重点实验室面上项目 （）
