不同施肥对芒果产量及经济效益的影响

Effect of Different NPK Fertilizers on Yield and Economic Results of Mango

芒果田间肥效试验表明,与常规施肥(N2P2K2)相比,增施氮肥(N3P2K2)、磷肥(N2P3K2)和钾肥(N2P2K3)均表现出较好的增产效果,分别增产23.16%、17.28%和29.06%,增产效应依次为钾>氮>磷。经济效益以增施钾肥(N2P2K3)效果最佳,其净利润为54656.3元/hm2,肥料产投比(VCR)为8.1,增施氮肥(N3P2K2)和磷肥(N2P3K2)的净利润分别为51506.3元/hm2和48393.8元/hm2,肥料产投比(VCR)分别为7.9和7.7,说明当前施肥还可以进行更为合理的调整。

NPK Fertilizer application experiments in mango indicated that increased applications of N, P, K fertilizers in the NPK treatments produced a better effect on yield, and that treatments N3P2K2, N2P3K2, N2P2K3 for high N, P and K increased the yield by 23.16 % （N3）,17.28 %（P3） and 29.06 % （K3） respectively as compared to the control. The increasing effect is in the order of K〉N〉P. At the same time, the high K fertilizer treatment （N2P2K3） produced the best economic benefits （54656.3 yuan/ha） with a ratio of fertilizer input to yield being 8.1, followed by the high N and P fertilizer treatments （N3P2K2, N2P3K2） which produced respective benefits of 51 506.3 yuan/ha and 48 393.8 yuan/ha with the ratios of input to yield being 7.9 and 7.7. These indicate the current PNK fertilizer treatments in Mango have more room to improve.