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1979年,我们在雷家大队二队进行插前不同施肥方法试验.试验地为秧田地,地力相同,采取深层、全层、表层三个处理,不施肥为对照,共设4个小区,面积均为1亩地.深层施肥:在未上水和耙地前,将20斤尿素均匀撒在田内,然后上水耙地插秧.全层施肥:在水耙地后将20斤尿素撒在田内,再用木板拉拍进行插秧.表层施肥:在地平整后,将20斤尿素
In 1979, we carried out the experiment of different fertilization methods in the second team of Lei Family Brigade before the experiment, which was the same ground fertility and the same ground fertility, taking three treatments of deep layer, full layer and surface layer without fertilization as control Are 1 acres of land Deep fertilization: before the water and rake in the ground, the 20 kg of urea evenly sprinkled in the field, and then transplanted to rake in Sheung Shui. Full-thickness fertilization: 20 kg of urea in the field after raking , And then planted wood shoots Transplanting. Surface fertilization: After the ground level, 20 kg of urea