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一、试验情况近数年来,苏州地区磷肥有效范围扩大,钾肥也常有增产表现。据中国科学院南京土壤研究所报导,过
First, the test conditions In recent years, the effective range of phosphate fertilizer in Suzhou expanded, potash often yield performance. According to the Nanjing Institute of Soil Science, Chinese Academy of Sciences, said