夏玉米的中后期是营养生长和生殖生长并进期,该阶段是病、虫、草害盛发期,也是决定穗大、粒多,实现高产的关键时期。因此,一定要克服过去“前紧、中松、后不管”的麻痹思想。1.穗期去除分蘖和弱、小株。分蘖争夺主茎养分,今年前期高温干旱,玉米生长受到抑制,群体偏低的田块,分蘖现象普遍,应及时拔除,以利主茎生长。因此要在穗期及时剔除弱、小、病株,减少养分消耗,改善田 The latter part of summer maize is vegetative and reproductive growth and progressing. This phase is the period of disease, insect pests and weeds. It is also the critical period for determining the large ear, large grain and high yield. Therefore, we must overcome the past “before tight, loose, regardless of ” paralysis. 1. Remove the tiller tiller and weak, small plants. Tillers compete for main stem nutrients, high temperature and drought earlier this year, corn growth was inhibited, low population of plots, tillering is widespread, should be promptly removed, in order to benefit the main stem growth. Therefore, in time to remove weak, small, diseased plants, reduce nutrient consumption and improve the field