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研究夏玉米的安全抽雄开花期及与之相对应的播种适期,不仅是夺取玉米高产稳产所需要,而且也是发展麦-杂耕作制度必须研究的问题。本文运用我场气象站24年(1957—1980年)的气象资料,结合我所近两年玉米栽培试验的结果,探讨夏玉米与气象条件的生态关系及其安全抽雄开花期,以期确定比较适宜的夏播播期范围。 一、夏玉米生育期间的气候特点 襄北夏播玉米的栽培季节,一般是从5
Studying the safe tasselling flowering stage of summer maize and its corresponding sowing period is not only necessary to seize the high and stable yield of maize, but also the issue that must be studied in developing the wheat-tillage system. Based on the meteorological data of our field for 24 years (1957-1980) and the results of maize cultivation experiments in the past two years, this paper explores the ecological relationship between summer maize and meteorological conditions and its safe tasselling and flowering stage in order to determine the suitable Summer sowing date range. First, the characteristics of the summer during the growth of maize climate Corn planting summer planting season, usually from 5