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1979年7月17—20日,当花生生长旺盛期,在开封县范村公社、开封市郊汪屯公社试用飞机为花生喷施磷酸二氢钾,喷肥面积1.2万多亩。从七个试验点调查结果,喷施磷酸二氢钾的,花生平均亩产253.9斤,未喷施的亩产231.2斤,平均增产9.4%。其中增产最高的为19.8%,有一个点减产3.9%。据开封县传礼寨大队第八队调查,花生喷施磷酸二氢钾后,有效枝长较对照增加0.4厘米,结荚节数增加0.53个;单株结果数较对照增加1.3个,其中饱果增加1.19个。开
July 17-20, 1979, when the peanut flourished, Kaifeng County Village Commune, Kaifeng Wang Tuen Commune commuters pilot aircraft for the application of potassium dihydrogen phosphate, fertilizer area of 12,000 mu. From the results of the seven pilot survey, spraying potassium dihydrogen phosphate, peanut average yield 253.9 kg, not sprayed 231.2 kg per mu, an average yield of 9.4%. Among them, the highest yield was 19.8%, with a decrease of 3.9%. According to the investigation of the eighth team of the Chuanzhai Walled Brigade in Kaifeng County, after peanut was sprayed with potassium dihydrogen phosphate, the effective branch length increased by 0.4 cm compared with the control and the number of pods was increased by 0.53. The number of single plant results increased by 1.3 over the control, The fruit increased by 1.19. open