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近几年来,我省各地推广种植杂交早稻面积逐年扩大,但如何夺取杂交早稻高产.在做好前、中期管理基础上,还要加强后期管理。后期管理主要抓好以下“五防”: (1)防贪青杂交早韬由于前期早发性差,若在后期氮肥施用过多.就会出现贪青迟九若发现后期剑叶披垂、肥大,有贪青现象的田块,每亩可用米醋250克、过磷酸钙1000克(先用少量水浸24小时后取滤液),加水50～60公斤;或闲磷酸M氢钾100～150克,加水50～60公斤,分别在孕穗、始穗、齐穗期各喷施1次。
In recent years, the area of popularized hybrid early rice has been expanding year by year in our province, but how to seize the high yield of hybrid early rice, and on the basis of good previous and medium-term management, it is necessary to strengthen the latter management. The latter part of the management should focus on the following “five preventions”: (1) Preventing intercrossing young birds Because early premature onset is poor, if excessive nitrogen fertilizer is used in the later period, , There is the phenomenon of greed green field, available vinegar per acre 250 grams, superphosphate 1000 grams (first with a small amount of water for 24 hours after the filtrate), add water 50 to 60 kilograms; or potassium hydrogen phosphate 100 to 150 grams , Add water 50 to 60 kilograms, respectively, in the booting, beginning spike, full spike spraying 1 times.