适期播种是夺取冬小麦高产的重要环节。种植面积较大的社队,由于秋收、秋种同时进行,时间紧、任务重,要在较短的适期内把大面积冬小麦种好,确有一定困难。针对这个问题,我们作了一些试验和调查,现就以下两个问题谈谈我们的看法。冬小麦播种期有多长时间? 冬小麦的播种期与播种当时的温度及苗期生长所需的积温有直接关系。如果要求麦苗在冬前生长健壮,根系发达,并有3～4个大蘖,则播 Appropriate sowing is to win an important part of winter wheat yield. The communes and communes with larger planting areas have certain difficulties in planting a large area of ​​winter wheat within a relatively short period of time due to the favorable conditions of autumn harvest and autumn planting at the same time, tight schedule and heavy tasks. In response to this question, we have conducted some experiments and surveys and we are now discussing our views on the following two issues. How long is the winter wheat sowing period? The sowing date of winter wheat is directly related to the temperature at the time of planting and the accumulated temperature required for seedling growth. If you want wheat seedlings to grow robust before winter, well-developed roots, and 3 to 4 big tiller, then broadcast