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本试验采用农业部“3414”试验设计,研究不同因素施肥组合对马铃薯产量及施肥效益的影响,提出氮、磷、钾的最佳用量和配肥比例,结果表明:在喀什地区高土壤肥力条件下施氮、磷、钾肥对马铃薯的增产效果依次为N>K>P,最佳施N量为41.42 kg/667 m~2、P2O5为31.95 kg/667 m~2、K_2O为26.26 kg/667 m~2,最佳经济产量为2 848.5kg/667 m~2,N∶P_2O_5∶K_2O比例为1∶0.34∶0.63。
In this experiment, the Ministry of Agriculture “3414 ” experimental design to study the effects of different combinations of fertilization on potato yield and fertilizer efficiency, put forward the optimum dosage of nitrogen, phosphorus and potassium and fertilizer ratio, the results showed that: in the Kashi area of high soil Under the condition of fertility, the effects of N, P and K on the yield of potato were N> K> P, the best N application rate was 41.42 kg / 667 m ~ 2, P2O5 was 31.95 kg / 667 m ~ 2 and K_2O was 26.26 kg / 667 m ~ 2, the best economic yield is 2 848.5kg / 667 m ~ 2, the ratio of N:P_2O_5:K_2O is 1:0.34:0.63.