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利用2012年庄河5期分期播种试验资料,分析温度条件对辽宁南部春玉米生长发育及产量的影响。结果表明:在光照和水分条件适宜情况下,玉米各生育期持续时间受温度条件影响较为明显,出苗、苗期及灌浆期随温度升高而缩短,其中出苗时间对日最低气温比日均温响应更为明显。玉米生长状态在营养生长阶段受温度影响较小,而产量形成过程因不同温度条件对干物质积累影响的差异而不同。产量形成不但取决于灌浆期积温,同时还受气温日较差和日最低气温的影响。对于庄河地区而言,适当晚播将有利于玉米各生育期经历更为适宜的温度条件进而提高产量。
In 2012, Zhuanghe stage 5 sowing test data were used to analyze the effects of temperature on the growth and yield of spring maize in southern Liaoning. The results showed that under suitable light and moisture conditions, the duration of each growth period of maize was more affected by the temperature conditions. The emergence, seedling and filling stages were shortened with the increase of temperature. The average daily temperature The response is even more obvious. The growth status of corn is less affected by temperature in vegetative growth stage, and the process of yield formation is different due to the difference of dry matter accumulation under different temperature conditions. Yield formation not only depends on the filling temperature, but also by the temperature difference between the sun and the lowest temperature. For the Zhuanghe area, proper late-night broadcast will be conducive to the corn growth period experience more suitable temperature conditions and thus increase production.