控制性交替灌溉条件下玉米根系的时空分布规律  

Spatiotemporal Distribution Law of Spring Maize Root Systems under Controlled Alternative Irrigation

作　　者：汪明霞[1] 陶永霞[1] 

机构地区：[1]黄河水利职业技术学院,河南开封475001

出　　处：《节水灌溉》2011年第10期13-16,共4页Water Saving Irrigation

基　　金：河南省教育厅自然科学研究计划项目(2011B570007)

摘　　要：采用大口径土钻对控制性交替灌溉条件下玉米根系进行取样,分析了作物根系的空间分布及动态变化规律。结果表明:春玉米根系呈指数递减规律。采用SPSS11.5多元线性回归建立质量密度(R)的二维空间分布函数,经验证,根系密度的二维分布函数均可反映作物根系的实际生长状况。In this paper,root samples of spring maize under controlled alternative irrigation were taken with large-bore soil auger,and the dynamics of their spatiotemporal distribution were studied.The results showed that both in vertical and in horizontal directions,the root mass of spring maize decreased in exponent function.Multiple linear regression was made to establish the two-dimensional spatiotemporal distribution functions of spring maize root biomass by using SPSS11.5,and the validation tests demonstrated that the function was available to describe the real growth status of test crops root systems.

关 键 词：控制性交替灌溉 春玉米 根系 分布函数 

分 类 号：TV93[水利工程—水利水电工程]