在种好杂交高粱的基础上,要加强田间管理,才能夺取杂交高粱的高额丰产。杂交高粱生长发育的规律是:苗期生长弱,中期生长强,后期生长猛。凡是秆子低而粗的,穗头就大,产量就高;凡是秆子高而细的,穗头就小,产量就低。因此,在管 In the good hybrid sorghum basis, to strengthen field management, in order to seize the high yield of hybrid sorghum. Hybrid sorghum growth and development of the law are: seedling growth is weak, mid-term growth strong, fierce growth in the late. Any stalk of low and coarse, spike large, yield is high; all tall and thin stalk, spike is small, the yield is low. So in the tube