【摘要】 通过对不同耕作方式玉米地下部生长发育及土壤水分状况进行分析,结果表明,不同耕作方式下,玉米的根系生物量、根系体积在不同生育期存在差异;不同耕作方式间玉米根系性状存在差异,翻耕覆膜根系生长状况好于其它耕作方式。三种耕作方式中,土壤含水量的变化趋势表现出低-高-低的倒"V"字型变化,这种规律性变化与根系的生长发育特性和灌溉有关。更多还原

【Abstract】 Through analyzing the maize growth and soil water condition with different cultivation way,the results show that there are differences among different cultivation way in root system biomass and root system volume,root condition of plowing with cover is better than that of others.In 3 cultivation ways,soil water content has a reverse "V" change which is low-high low,this change is relevant to root growth and irrigation.更多还原