我们大队从1972年开始使用腐植酸肥料,三年来施用而积逐年扩大,1974年全大队使用腐植酸肥料约80余万斤,面积近2000余亩,占播种面积一半左右。过去,我们大队肥料很缺,只是小麦、谷子、山药普遍施肥,茯麦、甜菜部分施肥,其他 Our brigade started to use humic acid fertilizer since 1972 and has been expanded year by year since it was applied in three years. In 1974, the entire brigade used about 80 kilograms of humic acid fertilizer and nearly 2,000 acres, accounting for about half of the sown area. In the past, our brigade was lacking in fertilizers, but wheat, millet, yam, fertilizers, fertilizers, beet fertilizers and others