水稻施肥在当前生产上普遍是在水耕条件下撒施、表面(地面和水面)施和分期施。其用量以硫铵计,每亩大约在三十公斤左右。在缺磷的土壤上普钙的用量约在五十公斤左右。至于氮素化肥的分配量,一般是营养生长期(包括底肥和分蘖肥)约占百分之六十至七十;生殖生长期和后期(包括穗肥和粒肥)占百分之三十至四十。因此,可概 Rice fertilization in the current production is generally spread under the conditions of hydroponic, surface (ground and water) facilities and staging. The amount of ammonium sulfate meter, about 30 kilograms per mu. Calcium deficiency in the phosphorus-free soil on the amount of about 50 kg. As for the distribution of nitrogenous fertilizers, they generally account for about 60% to 70% of vegetative growth stages (including basal and tillering fertilizers), 30% for reproductive growth stages and late stages (including panicle and grain fertilizers) forty. Therefore, can be