前言水稻后发,就是水稻生长后期贪青徒长。从形态观察,后发水稻和前发水稻相比较,植株略高,节间稍长,叶片特别是旗叶较长而且又宽又厚。这样就造成了水稻营养生长过度旺盛,荫蔽度加大。因此极易感染稻瘟病和褐斑病,倒伏严重,生长期延长。这种现象,对水稻种植是十分不利的,其结果必然是空秕率增高,千粒重降低,产量显著下降。 Foreword After the rice, is the late growth of rice greedy stunt. From morphological observation, late-onset rice and pre-harvest rice plants slightly higher, internodes slightly longer, leaves, especially the longer leaves and wide and thick. This has resulted in excessive growth of rice nutrition, increased shade. So easily infected with rice blast and brown spot disease, lodging serious, prolonged growth. This phenomenon is very unfavorable to rice cultivation. The result is inevitably an increase in the rate of empty rice, a decrease in grain weight, and a significant drop in output.