生产实施和经验表明,小麦是否会发生倒伏,早期可以从两个方面来观察判断,一是密度大、群体过密、田间郁闭、光照不足,基秆软弱的最易倒伏。二是从长相上看。如叶片肥大、叶色黑绿、叶形披垂,特别是植株上部第一、第二片叶长度披垂程度占整片叶的50%和30%以上时,皆存在倒伏的 The implementation of production and experience show that the occurrence of wheat lodging, the early can be judged from two aspects to judge, first, density, dense population, field canopy, lack of light, the most vulnerable base stalk lodging. Second, look from the looks. Such as leaf hypertrophy, leaf color dark green, leaf-shaped drape, especially the upper part of the plant first, the second leaf length of the degree of draping leaf accounted for more than 50% and 30%, there are lodging