商品有机肥替代部分化肥对冬瓜产量和土壤有机质含量的影响

Effects of Commercial Organic Fertilizer as Substitute of Chemical Fertilizer on Yield of Wax Gourd and Soil Organic Matter Content

种植黑皮铁心冬瓜,施用商品有机肥替代部分化肥,结果表明:每667 m^2施用商品有机肥500 kg化肥减少20%情况下,产量比单施化肥的增产18.5%,收益增加26.1%;而每667 m^2施用商品有机肥500 kg化肥减少40%情况下,产量比单施化肥的减产11.7%,收益减少25.34%。施用商品有机肥后土壤有机质含量提高明显,分别比单施化肥的提高6.70%~9.38%。生产上建议,在中等肥力耕地上种植黑皮铁心冬瓜每667 m^2施用商品有机肥500 kg化肥减少20%为宜。

In this study,commercial organic fertilizer was applied as substitute of chemical fertilizer when black skin and small seed-cavity wax gourd was planted.The results showed that when 20%reduction of 500 kg commercial organic fertilizer per 667 m^2 was applied,yield was higher than that when chemical fertilizer was applied by 18.5%and benefits higher by 26.1%.When 40%reduction of 500 kg commercial organic fertilizer per 667 m^2 was applied,yield was lower than that when chemical fertilizer was applied by 11.7%and benefits lower by 25.34%.Application of commercial organic fertilizer could significantly improve soil organic matter content than chemical fertilizer by 6.70%~9.38%.In production it was suggested that 20%reduction of 500 kg commercial organic fertilizer per 667 m^2 should be suitable when black skin and small seed-cavity wax gourd was planted in medium-fertility arable land.