农作物种子一般具有后熟作用,特别是春播用种,要经过漫长的冬季。如果存放一段时间不翻晒,不把种子在后熟过程中释放出的水分去掉,就会使种子受潮,发生霉变而直接影响其生命力。因此,农作物种子在冬季贮存时,应每30—35日内选择晴天进行翻晒。这样,不仅可以降低种子的含水量,改善种皮的通透性和透水性能,而且太阳紫外线有消毒作用,能杀伤一切病源菌,减少病虫害发生。特别是快要接近播种的日子,通过翻晒种子,播种 Crop seeds generally have a post-ripening effect, especially for spring sowing, going through a long winter. If stored for a period of time without drying, not to release the seeds in the ripening process to remove the moisture, it will make the seeds damp, mildew and directly affect their vitality. Therefore, crop seeds should be sun-dried every 30-35 days when stored in winter. In this way, not only can reduce the water content of the seed, improve the permeability and water permeability of the seed coat, but also have the disinfection function of the ultraviolet rays of the sun, can kill all pathogenic bacteria and reduce the occurrence of pests and diseases. In particular, we are about to approach the day of sowing and sow the seeds by sunning them