论文部分内容阅读
通过分期播种探测京郊主栽玉米品种生育期的伸缩性及产量表现。试验数据显示,安全生长期内参试品种的生育期长短与播种日期呈显著直线负相关,晚熟品种生育天数增减幅度大于早熟品种;明确北京地区不同熟期主栽品种适宜播种时期和临界安全播种日期。试验结果为京郊玉米雨养旱作生产品种的选择提供了依据。
The sowing date was used to detect the malleability and yield of the main maize cultivars in the suburb of Beijing. The test data showed that the growth period of tested varieties during growing season showed a significant linear negative correlation with the sowing date, and the growth and development days of late-maturing varieties increased more than the precocious varieties. The appropriate sowing date and critical safety sowing date date. The results provide the basis for the selection of varieties for maize production in the suburbs of Beijing.