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培育冬前壮苗,确保安全越冬.是夺取小麦丰收的基础。影响小麦冬前壮苗的因素很多,主要有:①抢墒播种,底墒不足;②底肥不足,氮磷比例失调;③播种粗放,过浅落干,过深不发苗;④管理跟不上等。因此每年小麦都会出现黄弱苗、小老苗、越冬死苗等现象。特别是越冬死苗,已成为夺取小麦高产的严重障碍。通过近几年的调查分析,发现越冬死苗的原因主要是冻害、干旱、选用品种不当和管理粗放等因素造成的。因此,要培育小麦咚前壮苗,首先是把好播种关,诸如施足底肥、足墒下种,播期适宜、品种对路、精细播种等。在此基础上,还要抓好冬前管理。
Cultivate strong seedlings before winter, to ensure the safety of winter is to seize the basis for wheat harvest. Affect the winter seedlings before winter a lot of factors, mainly: ① grab moisture sowing, lack of end moisture; ② lack of base fertilizer, the proportion of nitrogen and phosphorus disorders; ③ sowing extensive, too dry, too deep no hair; ④ management can not keep up Wait. So every year there will be weak yellow wheat seedlings, small seedlings, dead winter seedlings and other phenomena. In particular, winter dead seedlings, has become a serious obstacle to capture high-yield wheat. Through the investigation and analysis in recent years, it is found that the main causes of overwintering dead seedlings are frost damage, drought, improper selection of varieties and extensive management. Therefore, to cultivate the wheat thigh before strong seedlings, the first is a good sowing off, such as the application of adequate fertilizer, adequate moisture sowing, sowing date appropriate, variety on the road, such as precision sowing. On this basis, but also grasp the winter management.