水稻深施氨水作用大。崇明县城东公社六大队十一生产队,1973年对后季稻“嘉农14”品种,在移栽前进行氨水不同施用方法的试验。一块4.5亩,在移栽前一天(8月3日),每亩施氨水50斤作基肥,然后耕翻2～3寸深,使土肥相混;另一块5亩直接施于表土,同一天移栽。试验结果:深施的返青期比施 Ammonia deep water effect of rice. Chongming County Chengdong commune six brigade eleven production team, 1973 on the latter quarter of rice “Jiunong 14 ” varieties, before transplanting different methods of ammonia test. A piece of 4.5 acres, the day before transplanting (August 3), 50 acres of ammonium fertilizer for basal fertilizer, and then plowing 2 to 3 inches deep, so that soil fertility; the other 5 acres directly applied to the topsoil, the same day Transplanting. Test results: deep facilities to return green than facilities