大气科学学报2012，Vol.35Issue(4)：487-494,8.
地表太阳辐射减弱下麦田土壤酶活性及有效养分的动态变化
Dynamic changes in soil enzyme activity and active nutrient in winter wheat field with reduced surface solar radiation
摘要
Abstract
Field shading experiment was used to simulate reduced solar radiation at different percentages of 85% ,80% ,60% ,40% ,0% in winter wheat field. The activities of soil catalase, invertase, urease and the amount of available P, K, Fe, Mn were examined during different growth stages of winter wheat. Re-suits show that different shading percentages delayed the winter wheat growing process to different de-grees. The more the radiation decreased, the more significant the phonological delay was. The decrease of radiation at 60% and 80% promoted the activity of catalase near and away from the root zone of winter wheat. Reduced radiation significantly decreased soil urease and invertase activity in the late growth stages of winter wheat. The most significant invertase activity reduction occurred when the solar radiation was reduced by 80%. The reduced solar radiations decreased the urease activity in soil. The less radiation near the root zone decreased the amount of K, Fe, Mn, with a trend as follows ： CK 〉 40% 〉60% 〉80%.关键词
遮光/太阳辐射减弱/冬小麦/土壤酶活性/速效养分Key words
overshadow/solar radiation reduction/winter wheat/soil enzyme activity/available nutrient分类
资源环境引用本文复制引用
郑有飞,李萍,吴芳芳..地表太阳辐射减弱下麦田土壤酶活性及有效养分的动态变化[J].大气科学学报,2012,35(4):487-494,8.基金项目
国家自然科学基金资助项目 （）
江苏省高校自然科学研究重大项目 （）
江苏省普通高校研究生科研创新计划 （）
