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适时播种,充分利用冬前有效积温与小麦高产有密切关系,然而何为适时播种?又如何科学地来确定冬小麦播种的适宜时期哩?所谓适时就是不早也不晚,根据我们几年来的实践,确定冬小麦适时播种期的作法是:根据不同小麦品种冬前壮苗标准所需有效积温数来计算播种的时期。1、确定不同小麦品种冬前壮苗标准:半冬性和冬性品种越冬前壮苗标准是主茎达
Timely sowing, making full use of winter effective accumulated temperature and wheat yield are closely related, but what is timely sowing? And how to scientifically determine the appropriate period of winter wheat sown miles? The so-called timing is not sooner or later, according to our practice over the past few years , To determine the timely sowing of winter wheat practice is: according to different winter wheat seedling standard seedling effective temperature required to calculate the number of sowing period. 1, to determine the standard of different wheat varieties before winter strong seedlings: semi-winter and winter varieties before winter strong seedling standard is the main stem up