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为使农户合理施肥,提高肥料利用率,实现农业可持续发展,2016年进行错期地膜马铃薯“3414”肥效试验研究。结果表明:承德中南部区域错期地膜马铃薯种植,N、P、K肥料的最佳施肥量分别为N 40 kg/667 m~2、P2O5 15 kg/667 m~2和K2O 20 kg/667 m~2,此配比的商品薯产量和经济效益最高,分别为2 516.7 kg/667 m~2和3 310.6元/667 m~2,为大面积推广配方施肥实现高产、高效提供科学依据。
In order to enable farmers to rationally fertilize, increase the utilization rate of fertilizers and realize the sustainable development of agriculture, the fertilizer experiment on potato “3414” was carried out in 2016. The results showed that the optimum fertilization rates of N, P and K fertilizers were N 40 kg / 667 m ~ 2, P2O5 15 kg / 667 m ~ 2 and K2O 20 kg / 667 m ~ 2, the highest yield and economic benefits of this compound were 2 516.7 kg / 667 m ~ 2 and 3 310.6 yuan / 667 m ~ 2, respectively, providing a scientific basis for large-scale popularization of formula fertilization to achieve high yield and high efficiency.