玉米根系与环境条件的关系

Relationship between Maize Roots and the Environmental Conditions

据玉米根系的生长及分布特性,在一定的土壤水分范围内,根系生长与土壤水分状况之间有正相关关系;氮、磷、钾肥和微肥不同时期施用对玉米根系形态和分布有影响;在紧实土壤中根系伸长速度减慢、根变短变粗,而在轻质型土壤中根系变得细长;随玉米品种更替,根系体积、吸收面积和活跃吸收面积显著增加,且与产量呈正相关;温度和植物生长调节剂等都能对根系生长发育和生理活性产生一定影响。

Based on maize root growth and distribution characteristics,in a certain range of soil moisture between root growth and soil moisture conditions there existed positive correlationship;and nitrogen,phosphorus,potassium and trace fertilizer application at different times had impact on the morphology and distribution of maize root;in the compaction of soil the root elongation slowed down,the root became shorter and thicker,and in the light-type soil roots became longer and thin ner;with the replacement of maize varieties,root volume,area and active absorption area increased significantly and positively correlated with the yield.Temperature and plant growth mediation agent could have certain impact on the root growth and physiological activity.