密植滴灌技术对玉米根系的影响

Effects of dense planting drip irrigation technology on maize root system

本试验以玉米品种郑单958、安科985和黄金粮MY73为材料,研究在滴灌和常规施肥条件下,不同种植密度(6.75万、8.25万、9.00万、9.75万和10.50万株/hm^(2))对玉米根系生长的影响。结果表明,随着玉米种植密度的增加,玉米根系干重、气生根和地下根数均呈降低趋势;不同施肥方式对玉米根系生长的影响有所不同,滴灌施肥技术能够促进玉米根系生长;品种黄金粮MY73的根系性状表现较好。栽植密度6.75万株/hm^(2)、滴灌施肥有助于促进玉米根系生长发育。

Maize varieties Zhengdan 958,Anke 985,and Huangjinliang MY73 were used as materials,the effects of different planting density(67500,82500,90000,97500,and 105000 plants/hm^(2))on maize root growth under drip irrigation and conventional fertilization conditions were studied.The results showed that with the increase of corn planting density,the dry weight of corn roots,aerial roots,and subterranean roots all showed a decreasing trend.The effects of different fertilization methods on the growth of maize underground roots vary,and drip irrigation fertilization technology could promote maize root growth.The root system characteristics of variety Huangjinliang MY73 were relatively good.Planting density of 67500 plants/hm^(2) under drip irrigation and fertilization conditions could help promote the growth and development of maize roots.