在伟大领袖毛主席关于“独立自主,自力更生”方针的指引下,为适应农业生产发展的需要,从去年八月以来,我县发动群众,广辟肥源,就地取材,就地制造,就地施用,大搞腐植酸类肥料,取得了一定的成绩。去年在小春作物上施用了腐植酸铵2130吨,7300多亩,其中小麦6287亩。根据社、队科技组典型田块实收实打及调查总结的11个材料看,施用过腐植酸铵的小麦平均亩产614.6斤,较没有施用过的对照田平均亩产464.7斤的增产32.2％,其增产的幅度为6.6～68.8％。平均每亩施腐植酸铵169公斤,每公斤腐植酸铵增产0.87斤,增产幅度为0.32—1.81斤(表一)。群众反映:“黑化肥效果好,农业生产不可少,成本低肥源广,社队群众都可搞。” Under the guidance of Chairman Mao’s principle of “independence and self-reliance” by the great leader, in order to meet the needs of agricultural development, since August last year, the county mobilized the masses to provide more fertilizers, locally obtain raw materials, manufacture locally and locally Application, engage in humic acid fertilizer, made some achievements. In the spring of last year, a total of 2,130 tons of ammonium huminate was used, of which 7,300 acres were harvested, of which 6287 acres were wheat. According to the statistics of 11 plots collected by the teams of science, technology and industry in typical plots and surveys, the average yield per mu of wheat with ammonium humic acid was 614.6 kg, compared with 464.7 kg per mu with no control %, The rate of increase of 6.6 ~ 68.8%. The average per acre humic acid ammonium 169 kilograms per kilogram of humic acid ammonium yield 0.87 pounds, an increase of 0.32-1.81 kg (Table I). The masses said: “The effect of black chemical fertilizers is good, indispensable agricultural production, low-cost sources of fertility, community teams can engage in.”