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伏旱,即伏天发生的干从入伏到出伏,通常为7月至8月中旬,出现较长时间的热少雨天气。伏旱发生时期,正是玉米以营养生长为主向生殖生长过并结束过渡的时期,叶面积指和叶面蒸腾均达到其一生中的高值,生殖生长和体内新陈代旺盛,同时进入开花、授粉段,为玉米需水的临界期和形成的关键需水期。玉米遭受旱灾害后植株矮化,叶片由下上干枯。干旱对玉米产量性状的影
Volatile, that is, the days of dry days from the volts into the volt, usually in July to mid August, the emergence of a longer period of hot and rainy weather. During the period of summer drought, it is the period that corn mainly relies on vegetative growth and ends the transition. The leaf area index and leaf transpiration all reach the high value in their lifetime, and the reproductive growth and in vivo new generation bloom, meanwhile, , Pollination section, the critical period of corn water demand and the formation of the key water period. After droughts, the plants dwarf the corn and the leaves dry from below. Effect of Drought on Yield Traits in Maize