不同播期密度对小麦“长航一号”产量的影响

目的]探寻小麦新品种"长航一号"在渭北地区的最佳播期和种植密度。方法]通过两因素二次D饱和最优试验设计,研究小麦新品种"长航一号"在渭北旱塬地区不同播期与种植密度处理下的产量,构建播期和种植密度与产量之间的数学模型。结果]目标产量在6 300~6 750 kg/hm2,最佳播期范围为9月20日至10月1日,最适种植密度为282万~375万/hm2。结论]该研究可为推广"长航一号"以及使其能在渭北旱塬达到高产提供理论依据。

Effects of Sowing Date and Planting Density on Grain Yield of Wheat Variety "Changhang No.1"

The aim was to find out the suitable sowing date and planting density of the new wheat variety“Changhang No. 1”in Weibei area. Method]The two factors and two D saturation optimum design was used to study the yield of the new wheat variety“Changhang No. 1”in Hanyuan Area of Weibei under different sowing date and planting density,to establish the mathematics model between sowing date,planting density and yield. Result]If the goal yield was 6 300- 6 750 kg /hm2,the most suitable sowing period was from September20 to October 1,and the most suitable planting density was 282 × 104- 375 × 10^4plants/ hm^2. Conclusion]The study provides a theoretical basis for promoting“Changhang No. 1”and making it reach high yield in Hanyuan Area of Webei.