通过小区田间试验,研究了腐植酸对土壤肥力、小白菜产量及其品质的影响。结果表明,施用腐植酸复混肥不仅可以改善土壤肥力,而且可以提高作物的产量和品质。其中,小麦产量提高38.1%、Vc含量提高32.4%、水溶性糖含量提高28.7%、N素利用率提高19.3%,土壤有机质含量提高16.1%。 Through field plot experiments, the effects of humic acid on soil fertility, yield and quality of Chinese cabbage were studied. The results showed that the application of humic acid compound fertilizer not only can improve soil fertility, but also can improve crop yield and quality. Among them, wheat yield increased 38.1%, Vc content increased 32.4%, water soluble sugar content increased 28.7%, N utilization increased 19.3%, soil organic matter content increased 16.1%.