水稻是禾本科作物,一生耗肥较多。杂交水稻生育期较长、生物产量高。目前大面积普及推广旱育秧、抛秧栽培,秧龄短,本田营养生长期长,所需养分80%以上来自本田。目前,化肥施用量增加而有机肥施用量明显不足,稻田持续供肥能力差,特别是一些磅田、沙田,水稻后期早衰严重,严重影响了杂交水稻增产潜力的发挥。近年来, Rice is a gramineous crop that consumes more fertilizer during its lifetime. Hybrid rice has a longer growth period and high biological yield. At present, the popularization and popularization of large areas of dry nursery seedlings, throwing transplanting cultivation, seedling age short, long vegetative Honda, more than 80% of the required nutrients from Honda. At present, the application rate of chemical fertilizers is increased while the application rate of organic fertilizers is obviously insufficient, and the ability of continuous supply of fertilizers in paddy fields is poor. In particular, some of Pounds, Shatin and rice have severe premature senescence and seriously affect the potential yield of hybrid rice. In recent years,