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本文通过 1 974～ 1 992年对小麦粒重形成与生育中期 (拔节至抽穗 )气象条件关系的研究 ,认为小麦开花后不久其粒重在年际间已有明显差异 ;小麦生育中期气象条件是影响早期粒重的重要因素 ,其中温度是影响的主导因素。每天日照在 6h以上易形成早期高粒重 ;降雨分布在该阶段的两端 ,有利于形成早期高粒重 ,这与生产上重视拔节水与孕穗水是一致的 ;在早期粒重高的年份 ,最终粒重常常也高 ,因此 ,在生产实践中 ,采取有效措施提高早期粒重对获得最终高粒重具有重要作用
In this paper, from1974 to1992, the relationship between grain weight formation and meteorological conditions in mid-growth stage (from jointing to heading) was studied. It was concluded that the grain weight of wheat had significant difference in the interannuation shortly after flowering. The meteorological condition in the middle stage of wheat growth was Important factors affecting early grain weight, of which temperature is the dominant factor. Sunshine daily above 6h easy to form early high grain weight; rainfall distribution at both ends of this stage is conducive to the formation of early high grain weight, which is consistent with the production of emphasis on water and booting water; in the early high grained year , The final grain weight is often high, so in the production practice, taking effective measures to improve early grain weight has an important role in obtaining the final high grain weight