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1 种子包衣的理论原理种子包衣用的种衣剂是由农药(杀虫剂、杀菌剂、成膜剂、分散剂、防冻剂)加工制成的。可直接包覆于种子表面,在短时间内能自动成膜为种衣;并且能从表面吸至种子内部,再传导到地上分布在作物幼苗末施药部位,起到保证种子正常生长,而药肥缓慢释放,促进种苗健康发育,改进作物品质,提高种子出苗率,提高产量等功效。 2 种子包衣对作物生长的促进作用种子在播种前进行1次集中包衣,可综合防治作物苗期的病、虫、鼠、雀害。因种衣剂药效能持续50～60d,一般包衣的玉米种子播种后3d就能发现死亡的蛴螬、蝼蛄、金针虫等。所以经过包衣的种子这层膜起到保护作用,种子吸水膨胀不会马上被溶解,在遇到低温干旱
A theory of seed coating The seed coating seed coating is made of pesticides (insecticides, fungicides, film-forming agent, dispersant, antifreeze). Can be directly coated on the seed surface, in a short period of time can automatically film as a seed coat; and can suck from the surface of the seed within, and then transmitted to the ground distribution of crop seedling application site, to ensure the normal growth of seeds, and Slow release of drug fertilizer to promote the healthy development of seedlings, improve crop quality, improve seed germination rate, increase yield and other effects. 2 seed coating on the promotion of crop growth Seeds before planting a centralized coating can be integrated control of disease seedlings, insects, rats, bird damage. Due to the efficacy of the seed coating lasted 50 ~ 60d, the common coated corn seeds could be found on the 3rd day after sowing. Therefore, this layer of film coated seed play a protective role, the seeds will not be immediately absorbed water swelling, in the face of low temperature and drought