Effects of Applying Humic Acids and Bio-fertilizer on the Qualities and Yields of Strawberry and Soil Agrochemical Characters

A greenhouse experiment was conducted to study the effect of humic acids and bio-fertilizer on the qualities, yields of strawberry and soil agrochemical characters. Humic acids and bio-fertilizer were applied based on the requirement of the normal growth of strawberry. Four treatments were plotted: control(conventional treatment), dressing humic acid, topdressing bio-fertilizer, dressing humic acid+bio-fer-tilizer. Each treatment was repeated three times and randomly arranged. Results showed that application of bio-fertilization, humic acid, hu-mic acid+bio-fertilization could significantly improve the growing of the strawberry, average weight of strawberry during full burning period increased by 8.85%, 14.12% and 16.23%, respectively; Incidence of powdery mildew, gray mold and rot disease of strawberry was signifi-cantly reduced. Yield of strawberry was also improved by 7.70%, 10.80% and 14.7% respectively, compared with the control treatment. The results also showed that application of humic acid+bio-fertilization could significantly increase the protein, vitamin C and soluble sugar con-tent while reduce free acid of strawberry. Soil organic matter content was significantly improved by 0.13, 1.51 g·kg-1 and 1.69 g·kg-1 respec-tively than control when bio-fertilization, humic acid, humic acid+bio-fertilizer were applied. In summary, humic acid and bio-fertilization had a positive impact on the growth of strawberry. Combined application of those two kinds of fertilizer would show the best agricultural effect