腐植酸复合微生物肥料对蔬菜生长及土壤腐殖质组分的影响研究

腐植酸复合微生物肥料能够显著促进蔬菜生长,表现为蔬菜鲜重和干重均增多。腐植酸复合微生物肥料能改善土壤质量,从而有利于植物生长,增加蔬菜全生育期有机物积累量。与对照(CK)比较,施用有机肥料,土壤有机碳(SOC)含量上升,但蔬菜产量降低;而施用腐植酸复合微生物肥料的SOC值呈现下降趋势,但蔬菜产量显著提高。腐植酸复合微生物肥料能使水溶性物质含量和黄腐酸含量降低,腐植酸含量增加,胡敏素含量降低,但其作用不如腐植酸和黄腐酸明显。因此,选择适宜的复合微生物肥料和有机载体对复合微生物肥料的功效作用至关重要。

Research of Humic Acid Compound microbial Fertilizers on Growth of Vegetables and Components of Soil Humus

The increase of fresh and dry weight can prove promoting effect of humic acid compound microbial fertil-izers on vegetable. Humic acid compound microbial fertilizers could improve the quantity of soil and accumulation of organic matters of vegetables in the whole growth periods. Compared with CK, SOC value was enhanced using organic fertilizer,while the yield of vegetables was reduced. On the contrary, humic acid compound microbial fertilizers could decrease SOC, while increased the yield of vegetables. Humic acid compound microbial fertilizers could decrease WSS value, HM value and FA value, and increased HA value respectively, though it was not as obvious as HA and FA. There-fore, it is more important to select suitable compound microbial fertilizers and suitable organic carrier in the compound microbial fertilizers.