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晋城市地处太行山的南端,小麦种植面积95万亩左右,其中旱地小麦占90%以上。由于受到自然条件和人为因素的影响,小麦生长后期倒伏现象常有发生,严重影响小麦的产量。小麦生长发育的灌浆期,本市易遭遇大风、降雨等天气,致使麦田发生局部或大面积倒伏。倒伏后小麦茎叶受到损伤,田间通风透光不良,养分运输受阻,导致穗粒数减少,千粒重下降,造成减产(一般减产两成左右,严重的可达五成以上),这就是俗话说的“麦倒一把草”。小麦倒伏从时间上可分为早倒伏和晚倒伏。早倒伏发生在灌浆初期和中期,受损失较大;晚倒伏发生在灌浆后期,受损失较
Jincheng City is located in the southern tip of Taihang Mountains, wheat planting area of about 95 acres, of which dryland wheat accounts for more than 90%. Due to natural conditions and human factors, the phenomenon of lodging in the late stage of wheat often happens, which seriously affects the yield of wheat. Wheat growth and development of the filling period, the city is vulnerable to wind, rainfall and other weather, resulting in a partial or large wheat fields lodging. After lodging wheat stems and leaves are damaged, field ventilation and poor light, blocked transport of nutrients, resulting in fewer grains per spike, 1000-grain weight decline, resulting in reduced production (usually about 20% reduction, serious up to 50%), which is the saying goes “Mai down a grass ”. Wheat lodging from the time can be divided into early lodging and late lodging. Early lodging occurred in the early and middle stages of grain filling, and suffered more damage. The late lodging occurred in the late filling stage and suffered more damage