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試驗和調查証明,苏北滨海盐土上施用磷肥,均有不同程度的增产。一般一斤过磷酸鈣能增产籽棉0.18~0.49斤,大麦0.73~1.15斤,蚕豆2.99~3.65斤,大豆0.71~1.44斤,綠肥每亩施20斤过磷酸鈣可增产鮮草17.46~63%。小麦或其他禾谷类作物施用磷肥时配合施用氮肥更好,如用硫酸銨5~10斤、过磷酸鈣20~30斤拌和少量干土,随拌随作基肥施用,待作物返青时再追施10斤硫銨或人粪尿、硝酸銨等。
Tests and investigations show that the application of phosphate fertilizer on the coastal salt soil in northern Jiangsu have different degrees of increase. Generally a pound of superphosphate can increase 0.18 ~ 0.49 kg of seed cotton, 0.73 ~ 1.15 kg of barley, 2.99 ~ 3.65 kg of beans, 0.71 ~ 1.44 kg of soybeans, and 20 kg of green manure per kilogram of superphosphate can yield 17.46 ~ 63% of fresh grass. Wheat or other cereal crops with phosphorus fertilizer application of nitrogen fertilizer is better, such as ammonium sulfate 5 to 10 pounds, superphosphate 20 to 30 kg mix a small amount of dry soil, with the mix as a base fertilizer, wait until the crop is re-chasing 10 kg ammonium sulfate or human excrement, ammonium nitrate and so on.