农业生产过程,有各种逆境干扰。早稻育秧期间,常遇寒流低温,使秧苗细胞代谢能力降低,细胞膜受伤,根部受冻,造成烂秧死苗。因此,必须重视育秧前防寒物质准备和严格培育壮秧各项技术,其中合理施肥能增强秧苗抗寒能力。所以秧田除施足腐熟人粪尿作基肥外,还须配施适量的氮磷钾化肥。氮肥宜适量,若过多,秧苗生长幼嫩,抗寒力较差。若秧苗 Agricultural production process, there are various adverse interference. During the early rice seedling cultivation, low temperature is often encountered in the cold in the cold so as to reduce the metabolic capacity of the seedling cells, damage the cell membrane and freeze the roots, resulting in rotting seedlings. Therefore, we must attach importance to preparation of seedlings preculture materials and strict training of seedlings of various technologies, including fertilization can enhance the ability of cold-resistant seedlings. Therefore, in addition to full maturity seedling manure used as basal fertilizer, but also with the appropriate amount of NPK fertilizer. Nitrogen should be appropriate, if too much, young seedling growth, cold hardiness is poor. If the seedlings