皖麦30晚播高产栽培主要农艺措施数学模型的初步研究

通过采用回归正交旋转组合设计和计算机模拟寻优方案 ,研究了播期、播量、施氮量对晚播小麦产量的综合效益及产量构成因素的变化规律 ,得出在我省淮北地区晚播小麦选用皖麦 30品种 ,单产在 6 75 0kg/hm2 以上的最优农艺组合为 :播期 10月 2 9～ 11月 6日 ,播量 16 3 .5～ 2 19.0kg/hm2 ,底施纯氮 90～ 12 0kg/hm2 ,配合拔节期追施 90kg/hm2 纯氮 ,其最佳产量结构为 5 72 .0万～ 6 2 5 .5万穗 /hm2 ,穗粒数 34.6～ 36粒 ;千粒重 38～ 41g。

Preliminary Study on the Mathematics Model of the Cultivated Techniques of Wheat Variety-Wanmai No.30

Through the orthogonal regression ratary combinative design and computer selected scheme.The regularity of the sowing period,sowing amount and supplement of mitrogen that affected wheat yield and factors of yield formation was studied.The optimal agronomic measures for Wanmai No.30 yield superior to 6750kg/hm2 in Huaibei area was obtained.It was that the sowing period was from 29 October to 6 November,the sowing amount was 163.5～219kg/hm2,the base nitrogen was 90～120kg/hm2,and the supplement of nitrogen in jointimg stage was 90kg/hm2.The optimal factors of yield formation was that the effective spikes were 572～625.5×104/hm2,the grain sper spike was 34.6～36，and the weight of 1000 grain was 38～41g.