大垄深耕整秆深还田对耐密玉米根系生长及产量的影响

Effects on Root Growth and Yield of Big Ridge Deep Ploughing with Whole Stalk Returning in Maize

[目的]探讨整秆深还对耐密玉米植株根系生长性状影响规律,揭示产量提高原因,筛选最佳整秆深还用量。[方法]采取随机区组设计,整秆深还用量5个处理分别测量根系生长情况和产量。[结果]整秆深还处理耐密玉米促根系干物积累和根系性状值增加,根系生长环境得到改善,耐密玉米的产量增加。[结论]整秆深还处理可快速提高耐密玉米产量,增加农民收益。

The influence law of root growth with stalk returning was discussed. The reason of yield increasing was revealed. The optimum dosage of stalk was selected. [Method] With random block design, five different treatments were used to measure root growth and yield. [Result] The root dry matter and root characteristics were increased under stalk returning of high density-tolerance corn. The environment of root growth was improved. and the yield was increase. [Conclusion] The Stalk returning could quickly improve the maize yield and the famer’s benefit.