关中灌区夏播陕单8806玉米密度与播期耦合技术研究

【研究目的】为了明确陕单8806玉米在关中灌区种植的适宜播期和合理密度,从而使优良品种与地区生态环境相适应,发挥群体优势而夺取高产。【方法】采用二次饱和-D最优试验设计,研究了密度与播期对陕单8806玉米籽粒产量和生物学产量及农艺性状的影响。【结果】明确了在关中灌区夏播条件下,播期对玉米的影响效应显著大于密度,关中灌区夏玉米生产应力争早播。【结论】通过对玉米产量及农艺性状与密度和播期二因素建立的数学模型的回归分析,筛选确定了陕单8806玉米在关中灌区夏播的适宜播期为6月11日—18日,合理种植密度为60494￣70442株/hm2。

Research of Summer Seeding Shandan 8806 Corn Densities with Sowing Date Coupling Engineering in Guanzhong Irrigation Area

OBJECTIVE] In order to be clear about the Shaandan8806 corn to be suitable in the Guanzhong irrigation area Sowing date and the reasonable density, thus causes the improved seed and the area ecological environment adapts, the display community superiority captures the high production. METHOD] Uses two time saturated-D most superior experiment design, studied the density with to Sowing date to the Shaandan 8806 corn grain output and the biology output and the agronomic characters influence.RESULTS]Has been clear about under the Guanzhong irrigation area summer seeding condition, Sowing date the influence effect obviously to be bigger than the density to the corn, the Guanzhong irrigation area summer corn production should argue vigorously broadcasts early. CONCLUSION]Through and Sowing date two factor establishments to the corn output and the agronomic characters and the density the mathematical model regression analysis, screened had determined the Shaandan 8806 corn Sowing date in Guanzhong irrigation area summer seeding being suitable for June 11~on June 18, planted the density is 60494~70442plants/hm2.