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目前,玉米大田种植往往成苗率低,造成出苗不齐,群体整齐度下降,对产量影响十分严重,已成为玉米夺高产的主要障碍因素,其解决办法有以下几个方面:1、种子精选包衣。玉米种子播前,认真进行筛选,风选,去除秕粒、破粒、杂粒和病虫粒,选色泽一致,籽粒饱满,粒型大小基本相近。晒种2～3天,提高种子内酶的活性,降低种子含水量,加强种皮通透性,杀死种皮病菌,增强用种价值和种子生活力,使玉米种子播后萌发快而早,
At present, the maize field planting often has a low rate of seedling emergence, resulting in emergence of irregularities and the decline of population uniformity, and the impact on yield is very serious. It has become the major obstacle to yield high yield in maize. The solutions are as follows: 1. Select the coating. Corn seeds before sowing, serious screening, wind election, remove tablets, tablets, miscellaneous grains and insect particles, the same color selection, full grains, grain size is similar. Suning 2 to 3 days to improve seed enzyme activity, reduce seed moisture, enhance seed coat permeability, kill seed coat bacteria, and enhance the seed value and seed viability, so that the germination of corn seeds quickly and quickly germination ,