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1 正确晒种是前提水稻种子一般是上年生产次年使用,由于经过一段时间的储藏,使种子处在休眠及营养物质的降解过程,如果未经晒种就直接浸种催芽,种子的出苗率及整齐度都低于种子实际生活力。通过晒种可激活种子内部酶的活动,提高种子活力,浸种后种子发芽快,出苗整齐度高。正确的晒种方法是:晴天时,将种子摊晒在谷席上。翻晒3～4h(小时),定时翻动使种子晒均晒透。但是,切忌将种子摊晒于水泥地或农膜上,以免种胚烫伤,影响发芽率。
1 The correct drying seed is a prerequisite Rice seeds are generally used in the production of the previous year, due to the storage for a period of time, so that the seeds in the dormancy and degradation of nutrients, if not directly soaked seed germination, seed germination rate And uniformity are lower than the actual seed vitality. By sunning seeds can activate the activity of the enzyme inside the seed to improve seed vigor, seed germination after soaking fast, high emergence uniformity. The correct sunburn method is: sunny days, the seeds spread drying in the grain mat. Turn the sun 3 ~ 4h (hours), regularly flip so that the sun is drying through the seeds. However, the seeds should not be spread on the cement or plastic sheeting, so as not to scald embryos, affecting the germination rate.