摘要
玉米籽粒从受精到成熟,其长、宽、厚的变化,体积、鲜重和干重的增长曲线均表现“S”型。籽粒干重的增长可用Logistie方程拟和。玉米籽粒发育与品种、播期、温度和降雨量等关系密切。品种和播期影响籽柱灌浆速度、灌浆期长短和千粒重大小。春玉米百粒干重的增长与日均温呈高度显著正相关r=0.7071068,夏玉米百粒干重增长与日均温呈高度极显著正相关r=0.7071068。降雨量与千粒重亦呈正相关。
The research result showed that the variations on the length, width and thiekness of maize kernels and the increase curve of their volume, fresh weight and dry weight all dispaied 'S' form fertilization to ripen. The dry weight of maize kernels may be picked out by logisitive equation.The development of maize kernels had closed relationship to variety, sowing time, temperature and rainfall. Variety and sowing time affected the speed to be in the milk, the length of the date of milking and the weight of 100—maize kernels/. The increment of the dry weight of 100—kernels of the spring maize had significant positive correlation (r = 0.7071) with the daily mean temperature, the Summer maizr was highly Singni ficaut positine correlation (r = 0.7071). Besides, the rainfall alsu had positive correlation with the weight of one maize ear kernels and 1000-maize kernels.
关键词
玉米
籽粒
发育
拟合
相关分析
Corn
Variety
Fitting
Correlation interferometry
