摘要
[目的]研究播期对玉米高产机制的影响,并探讨不同品种玉米的最适播期。[方法]采用二因素裂区设计试验,通过形态指标动态变化的测定和产量的测定,研究了4个播期对3个玉米品种(川单428、正红311、川单418)叶片生长特性和产量构成因素的影响。[结果]在盆周山区,3个玉米品种的平均产量在播期为3月27日的最高,达6 565.84 kg/hm2,比其他3个播期(4月6日、3月17日和4月16日)高2.02%、8.18%和14.53%。适期(3月27日)播种,玉米的穗粒数和千粒重均较高;叶面积指数较高,且与其他播期差异显著;叶绿素相对含量也较高,前期上升幅度大后期下降缓慢。[结论]播期对玉米生长特性和产量构成因素影响重大,最适播期均在3月27日左右。
[ Objective ] The study aimed to research the effect of sowing period on high yield mechanism of maize and research the optimum sowing period of different maize varieties. [ Method ] The test with two factors spilt plot design was used to research the effect of 4 sowing peri- ods on the leaf growing feature and yield component factors of 3 maize varieties （ Chuandan 428, Zhenghong 311 and Chuandan 418） through the determination on dynamic change of morphological index and yield. [ Result] In the Penzhou maintain area, the average yield of 3 maize varieties was highest when the sowing period was in the March 27, reaching 6 565.84 kg/hm2, which was 2.02% ,8. 18% and 14.53% higher than that ill other 3 sowing periods （ April 6, March 17 and April 16）. Under optimum sowing period （ March 27 ）, the grains per spike and 1000-grain weight of maize were all higher; the index of leaf area was higher and its difference was＇remarkable when comparing with that in other sowing periods ; the relative content of chlorophyll was higher with great rising amplitude in prophase and slow decrease amplitude in anaphase. [ Conclusion ] The sowing period had great effect on maize growing feature and yield component factors and the optimum sowing period was around March 27.
出处
《安徽农业科学》
CAS
北大核心
2009年第16期7401-7402,7418,共3页
Journal of Anhui Agricultural Sciences
基金
四川季节性干旱区粮食作物综合节水技术研究与示范项目(2007BAD88B08)
四川主要粮食作物丰产科技工程项目(2006BAD02A05)
四川省育种攻关项目(2006Y2GG-28)
关键词
播期
品种
玉米
产量
Sowing period
Variety
Maize
Yield
