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由于育苗条件和管理方面的原因,秧苗在生长发育过程中往往出现某些生长发育障碍,影响培育优质壮苗。因此,生产中应对各种障碍进行正确的诊断,并通过改善育苗条件和管理措施及时地排除。1.种子发芽天数长.因种子质量差,催芽温度低,浸种时间大长或太短等所致。2.出苗天数长.地温低,土壤缺水或种子生活力弱。3.出苗不整齐.种子发芽势不好,地温低,覆土薄厚不均或底水不匀。
Due to nursery conditions and management reasons, the growth and development of seedlings are often some growth and development obstacles, affecting the cultivation of high quality seedlings. Therefore, various obstacles should be correctly diagnosed in production and promptly eliminated by improving seedling raising conditions and management measures. 1. Seed germination days long due to poor seed quality, germination temperature is low, soaking time is too long or too short and so on. 2. The emergence of a few days long. Low temperature, soil water or seed vitality. 3. Emergent irregular seed germination is not good, low temperature, uneven soil thickness or bottom water uneven.