摘要
试验以3个不同株型的玉米品种为材料,研究了不同播期条件下子粒灌浆特征参数和粒重的差异。结果表明,3个不同株型的玉米品种平均灌浆速率(V)以第二播期(3月27日)为最高,除中间型外,该播期最大灌浆速率出现时间(T)较晚,子粒干重保持较长时间的上升趋势;3种株型玉米品种平均灌浆速率(V)和最大灌浆速率(Vmax)均表现为稀植型(中间型(密植型,中间型品种最大灌浆速率出现时间(T)较晚;相关分析表明,玉米子粒最终粒重与灌浆速率和最大灌浆速率出现时间(T)均呈显著正相关。
Characteristic parameters of grain filling and grain weight of maize hybrids with different plant types were studied. The results showed that average rate （V） and the maximum rate （Vmax） of grain filling of maize cultivars with three plant type were the highest and the increasing time of kernel dry weight was the longest on the second sowing date. The order of the average rate （V） and the maximum rate （Vmax） of grain filling was loose type, semi-compact type, and then compact type. The maximum rate of grain filling （T） of the hybrids with semi-compact type appeared later. Correlation analysis indicated that the final kernel weight had positive correlation with the average grain filling rates and the time of the maximum rate （T） of grain filling.
出处
《作物杂志》
CAS
CSCD
北大核心
2009年第2期55-57,共3页
Crops
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(2007BAD88B08)
四川主要粮食作物丰产科技工程(2006BAD02A05)
四川省育种攻关项目(2006Y2GG-28)
关键词
玉米
播期
株型
灌浆特性
Maize
Sowing date
Plant type
Grain filling
