论文部分内容阅读
以郑单958为对照,设置春播(5月14日)和夏播(6月13日)两个播期处理,研究玉米品种京单38在不同生态条件下的子粒灌浆特性。结果表明,京单38的百粒干物重高于对照品种郑单958,春、夏播条件下增幅分别为14.74%和20.26%,春播百粒干物重较夏播高1.87%。京单38的子粒灌浆速率高于郑单958,春、夏播最大灌浆速率分别较对照高42.27%和49.50%,夏播最大灌浆速率较春播高9.42%。相关和通径分析表明,最大灌浆速率与粒重呈极显著正相关,与郑单958相比,京单38子粒灌浆速率高且灌浆速度快,春、夏播条件下均可获得较高的粒重。
Taking Zhengdan 958 as control, two sowing dates of spring sowing (May 14) and summer sowing (June 13) were set up to study the grain filling characteristics of maize variety Jingdan 38 under different ecological conditions. The results showed that the dry weight of 100 dry matter of Jingdan 38 was 14.74% and 20.26% higher than that of the control variety Zhengdan 958, respectively. The spring dry sown weight of 100 dry matter was 1.87% higher than that of summer. The grain filling rate of Jingdan 38 was higher than that of Zhengdan 958, and the maximum filling rate of spring and summer was 42.27% and 49.50% higher than that of the control, respectively. The maximum filling rate of summer sowing was 9.42% higher than that of spring. Correlation and path analysis showed that the maximum filling rate was positively correlated with the grain weight. Compared with Zhengdan 958, the grain filling rate of Jingdan 38 was high and the filling speed was fast. Under spring and summer seeding conditions, higher grain filling rate Grain weight.