今年春天雨水偏多,加上连阴雨天气多,使麦苗出现旺长,茎秆细弱,不少麦田出现了倒伏。不仅使小麦造成减产,而且因倒伏的发生,造成了机收困难,推迟了收获期,推延了夏播作物的播种期,对秋季作物的产量也有影响。倒伏的小麦,轻者减产30～40%,重者减产50～70%。今年山东小麦倒伏除了雨水偏多,持续阴雨时间长,光照不足,引发小麦纹枯病、白粉病等病害而引起小 This spring, the rain is too much, with even the rainy weather, so that wheat seedlings flourish, stalk slim, many wheat appeared lodging. Not only the yield reduction of wheat but also the difficulty of harvesting due to the occurrence of lodging, the postponement of the harvesting period, the sowing of summer sowing crops are delayed, and the yield of autumn crops is also affected. Lost wheat, the light output reduction of 30 to 40%, severe reduction of 50 to 70%. This year, Shandong wheat lodging in addition to excessive rainfall, prolonged rain over a long time, lack of light, causing wheat sheath blight, powdery mildew and other diseases caused by small