化控剂不同施用时期对玉米群体结构及生产力的影响

Effect of Different Chemical Control Stages and Different Chemical Regulators on Population Structure and Productivity of Maize

[目的]研究化控剂和施用时期对玉米大豆套作模式下玉米产量及形态结构的影响,寻找最佳的化控剂和化控时期,实现玉米套作大豆高产高效。[方法]采用2因素裂区试验设计,4种化控剂,4个化控时间,随机区组设计,重复3次。[结果]不同化控剂在不同化控时期对玉米产量及形态结构的影响有较大差异,不同化控剂的产量表现为矮丰>暴丰>矮大棒>丰韧,不同化控时期的产量表现为11叶期>9叶期>7叶期>14叶期。[结论]A3B3(矮丰11叶期化控)处理是最佳化控剂和化控时期,其产量比不化控增产7.89%,效益增加1 209.0元/hm2。

[Objective] To study the effect of different chemical control stages and different chemical regulators on population structure and productivity of maize in relay-planting system of maize and soybean,to find the best chemical control stage and chemical regulators and realize double high yield of corn and soybean. [Method] Design of two factor split zone experiment,four chemical control stages and four chemical regulators were tested in 3 replications with randomized complete-block design. [Result] There were large differences of effect of different chemical control stages and different chemical regulators on population structure and productivity of maize. Under conditions of different chemical regulators,yield performance showed Aifeng Baofeng Aidabang Fengren. Under conditions of different chemical control stage,yield performance showed 11 leaf stage 9 leaf stage 7 leaf stage 14 leaf stage. [Conclusion] A3 B3（ Aifeng 11 leaf stage） is the best chemical control stage and chemical regulators,its yield is 7. 89% more than that of the non chemical control increase,and the efficiency is1 209. 0 yuan/hm2.