“稻田以水带氮肥深施技术”对现有水稻施用氮肥方法作了改进,它将稻田施肥与水分管理结合起来,使表施的氮肥随水下渗带入土层中,减少了氮肥的损失,提高了氮肥的增产效果和利用率。1987年在浙江省进行的13个小区示范试验和4个大田对比试验结果表明,此技术与常用施肥法相比,可以减少1至2次追肥,节肥率30%以上,增产率约7%,每亩增产稻谷25—30公斤。 The method of applying nitrogen fertilizer to paddy field with water and nitrogen fertilizer has been improved. It combines paddy field fertilization and water management to make the surface nitrogen fertilizer infiltrate into the soil layer with water infiltration, reducing nitrogen fertilizer Loss, increased production and efficiency of nitrogen fertilizer. The results of 13 plots plots and 4 field trials conducted in 1987 in Zhejiang province showed that compared with common fertilization methods, this technique can reduce 1 to 2 topdressing fertilization rates by 30% or more and increase yield by about 7% Yield 25-30 kilograms of rice per mu.