要获得小麦丰收,必须在小麦生长发育过程中处理好个体与群体的关系,促使小麦穗多、穗大、粒多、粒重。小麦个体与群体发育之间存在一定矛盾,单位面积株数过少,单株生产力高,但不能有效利用养分和光能,群体生产力反而不高;反之,如单位面积内株数过多,个体发育受抑制,不分蘖,根系发育差,苗弱,产量也不会高。所以小麦高产必须正确处理好个体与群体的矛盾,在增加穗数的前提下,促使个体发育健壮,使 In order to get the good harvest of wheat, it is necessary to handle the relationship between individuals and groups in the process of wheat growth and development, and to promote the spike of wheat, spike, grain and grain weight. There is a certain contradiction between individual development of wheat and population, the number of plants per unit area is too small, the productivity per plant is high, but nutrient and light energy can not be effectively used, but the productivity of the population is not high; on the contrary, if the number of plants per unit area is too large, , No tillers, poor root development, weak seedlings, the yield will not be high. Therefore, the high yield of wheat must handle the contradiction between individuals and groups correctly. Under the premise of increasing the number of spikes, the individuals should develop robustly