栽培措施对玉米根系生长状况影响

本文通过用ABT生根粉4#、肥宝对玉米种子的不同处理及不同施肥水平试验观察结果为:ABT生根粉及肥宝对玉米有明显的促进生根作用,其根长、根重、根体积均比对照在同一生育期有显著增加,尤以生根粉+肥宝处理的效果最佳,表现明显互作正效应;不同施肥水平比较观察,在N、P₂O₅及K₂O为2∶1∶1情况下施用中肥处理即:N∶P₂O₅:K₂O为250kg∶125kg∶125kg/hm²为最佳,表现出根系强壮的特点.根重对维持叶绿素含量水平有一定作用.表现为根重大者,其叶绿素含量相对为高.

Effect of Cultivation Practices on Maize Root System Growth

This paper approaches the different treatment of ABT and Feibao with maize seed and different fertilizer levels.The results showed that ADT and Feibao obviously promoted growth,more roots,which showed that their total root length,root dry weight and root volume are more than the void treatment at the same growth stage.Specially treatment of ABT plus Feibao is the best.It shows the obvious mutual positive effect.Through observing different fertilizer livels test,results indicated that the middle fertilizer level is the best at the situation of N:P₂O₅:K₂O=2:l:l,namely N:P₂O₅:K₂O=250 kg :125 kg:125 kg/hm².At this situation the maize root system appears strong characters.At the same time,the root dry weight has the effects on maintaining chl.concentration,which shows that the P₂O₅:K₂O winghter root weight is,the relative higher the chl.concentration is.