摘要： 本研究结果表明,在黑龙港类型区生态条件下,影响夏玉米子粒产量的主要产量性状是粒重,其作用约为每穗粒数的2倍。灌浆期间的日平均气温和气温日较差与粒重为线性关系,降雨量与粒重则呈二次曲线关系。子粒形成期间的日平均气温与每穗粒数之间为正对数曲线关系,日照时数与每穗粒数为正指数曲线关系,降雨量与每穗粒数为负幂函数曲线关系。影响夏玉米子粒产量性状最主要的气象生态因子是温度和降雨量。

关键词: 黑龙港, 夏玉米, 产量性状, 气象生态因子

Abstract: The investigation results showed that thousand grain weight was more important than grain number of every ear under ecoclimatic conditions of Heilonggang Catchment Area. The function of the former was two times of that of the later. There were linear function relationships of grain weight with daily mean temperature and daily range of temperature during filling period. The relationship of the amount of precipitation with the grain weight was quadratic curve function. Daily mean temperature and the ear grain number was positive logarithmic function rela-tionship. Daily sunshine time and the grain number of every ear were positive exponential function relationship. The amount of precipitation and the grain number of every ear were negative power function relationship. The temperature and the amount of precipitation were the most important e-coclimalic factors effecting the yield of summer maize.

Key words: Heilonggang catchment area, Summer maize, Yield properties, Ecoclimatic factors

中图分类号: 

• S162.53