下层土壤容重对玉米生育后期叶片衰老的生理效应  

The Physiological Effect of Different Soil Bulk Densities on Maize (Zea mays L.) Leaf Senescence During Later Growth Stage

作　　者：李潮海[1] 赵霞[1] 王群[1] 郝四平[1] 

机构地区：[1]河南农业大学农学院,河南省作物生长发育调控重点实验室,郑州450002

出　　处：《玉米科学》2007年第2期61-63,共3页Journal of Maize Sciences

基　　金：河南省"九五"重点科技攻关项目(960201019)

摘　　要：采用桶栽法研究了下层土壤容重对玉米生育后期叶片衰老的生理效应。结果表明,随着下层土壤容重的增加,玉米单株叶面积下降;容重越大,叶面积指数下降幅度越大,玉米生育后期叶片衰老速度越快,SOD酶活性降低越多,MDA含量增加越多。The study was conducted using barrel cultivation on maize （Zea mays L.） leaf senescence during later growth stage at different soil bulk densities（BD） in the field experiment. The results showed that the growth of corn plant was closely related with the soil bulk density in the deep soil layers, and the leaves area per plant reduced gradually as the soil bulk density increased. The larger the soil bulk density increased, the smaller the LAI turned into. With the increase of soil bulk density, the senescence speed of corn leaves was rapid in later growth stage, the activities of SOD decreased, and the content of MDA increased.

关 键 词：土壤容重 玉米 衰老 生理效应 

分 类 号：S513.01[农业科学—作物学]