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1.晒种播种前将种子晾晒2~3天,可使种皮的透气性加强,提高胚的活力,促进酶的活性,加速胚乳养分的转化和利用,提高种子的生活力。还起到杀灭种子表面的病菌作用。 2.选种玉米自交系本身长势较弱,播前必须精选,选择子粒饱满、无霉变、无虫蛀、无变异粒的种子作为亲本种子。否则就会造成缺苗、死苗,影响田间密度。
1. Sun seed sowing the seeds before drying 2 to 3 days, the permeability of the seed coat can be enhanced to improve the vitality of the embryo, and promote enzyme activity, accelerating the transformation and utilization of endosperm nutrients to improve the viability of the seed. Also play a role in killing bacteria on the surface of the seed. 2. The selection of corn inbred lines itself is weak, sowing must be selected, select the full grain, moldy, non-moth-eaten, seedless seeds as the parent seed. Otherwise it will result in lack of seedlings, dead seedlings, affecting the field density.