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为了进一步探索总结棉花使用磷酸二氢钾(KH_2PO_4,含五氧化二磷52%,氧化钾34%)的经济有效时间、浓度和方法。我们同省土肥站、武汉市无机盐化工厂联合,组织随县,新洲,洪湖、汉川等四县部分公社和大队进行了大田示范和小区对比试验,现简介如下。
In order to further explore the economical and effective time, concentration and method of cotton using potassium dihydrogen phosphate (KH 2 PO 4, containing 52% phosphorus pentoxide, 34% potassium oxide). We jointly organized the Fertilizer Station in Wuhan and the Inorganic Salt Chemical Plant in Wuhan to conduct field demonstration and plot comparison experiments with some communes and brigades in four counties including Suixian, Xinzhou, Honghu and Hanchuan. The brief introduction is as follows.