稻田晒田有两个目的,一是使禾苗粗壮、根系发达,另一是控制无效分蘖。稻田养鱼后可以不晒田,其原因是:养鱼稻田因鱼不停的摄食活动,特别是草鱼和杂食性的罗非鱼和鲤鱼等,它们吃了杂草,减少稻田肥料的消耗。它们的粪便排在稻田里,增加了肥料。鱼类的游动,破坏了土壤表面层的氧化膜,使氧气进入耕作层的深处,加速了有机肥料的分解。在保肥,增肥和加速肥料分解的过程中禾苗粗 Paddy field Sha Tin has two purposes, first, thick seedling, root system developed, the other is to control invalid tillering. The reason is that after fish farming, there is no need for drying the paddy field. The reasons are: feeding fish and fish constantly due to feeding activities, especially grass carp and omnivorous tilapia and carp, they eat weeds and reduce the consumption of paddy fertilizer. Their manure is in the paddy fields, adding fertilizer. Swimming of fish destroys the oxide film on the surface of the soil, allowing oxygen to enter the depths of the tillage, accelerating the decomposition of the organic fertilizer. In fertilizer, fertilizer and speed up the decomposition of fertilizer Wo thick seedlings