鲁南区冬小麦山农20超高产栽培模式集成研究

Study on the Integrated Cultural Mode of Supper High Yield of Winter Wheat Shannon 20 in South Shandong District

采取正交旋转回归设计,以播种期、基本苗、氮肥施用量为试验因子,以10500 kg/hm^2的产量为目标函数,在鲁南区进行山农20冬小麦超高产栽培模式集成研究。结果表明,冬小麦超高产以播期和N肥施用量为主要限制因素,次要限制因素为基本苗。明确了冬小麦单产10500 kg/hm^2以上的最佳播量、播种期和合理的N肥施用量为主要指标的栽培技术模式。在目前生产条件下,冬小麦单产指标10500 kg/hm^2以上要求的农艺措施指标:在选用优质多抗高产小麦山农20等多穗型品种、实行宽幅精播的基础上,冬小麦播种期在10月8日~12日,基本苗180万/hm^2,氮肥施用量270~450 kg/hm^2,增产效果显著。

In this project, sowing date, planting density and amount of nitrogen fertilizer as three experimental factors, yield of 10500 kg /hm2 as objective function, orthogonal rotation regression designs were used to study the integrated cultural model of supper high yields for winter wheat of Shannong 20 in south of Lu district. The results show that sowing time and amount of nitrogen fertilizer were mainly restricted factors, and planting density was subordinate restricted factor for the supper high yields of winter wheat. In the current cultural conditions, the agricultural measure indicators for 10500 kg /hm2 or more yields of winter wheat is that: on the bases of selection high quality of multi-resistant and high-yielding of multi-spike strains such as winter wheat of Shannong 20, and precision seeding in wide implementation, sowing from 8th to the 12th in October, planting density as 1800000/ hm2, amount of nitrogen fertilizer as 270-450 kg/hm2 , this integrated cultural mode could significantly increase the yields.