腐植酸肥料减量施用对小麦产量及水分利用效率的影响

Effects of Reduced Application of Humic Acid Fertilizers on Wheat Yield and Water Use Efficiency

本研究以常规施肥为对照,通过设置不同用量腐植酸肥料处理,来探究腐植酸肥料及减量施用对小麦产量、土壤水分、水分利用效率、土壤速效养分的影响。试验结果表明:在等养分投入条件下,施用腐植酸肥料可以增产16.77%,且在减少10%用量的情况下腐植酸肥料仍有6.67%的增产效果。腐植酸肥料还可以提高小麦成熟期0~20 cm土层土壤含水量5.98%~14.13%。施用腐植酸肥料水分利用效率提高19.99%~45.24%。等养分投入条件下,还可以提高小麦成熟期0~40 cm土层土壤无机氮含量30.46%。

The effects of humic acid fertilizers and reduced application on yield,soil water,water use efficiency and soil available nutrients of wheat were studied with the conventional fertilization used as the control and the different amounts of humic acid fertilizers as treatments.The results show that the application of humic acid fertilizers could increase the yield by 16.77%with equal nutrient input,and increase by 6.67%with 10%reducition.Humic acid fertilizers could increase 0~20 cm soil water content by 5.98%~14.13%,0~40 cm soil inorganic nitrogen content by 30.46%during wheat maturity,and the water use efficiency by 19.99%~45.24%,respectively.