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为了构建喀什地区马铃薯施肥指标体系,本试验采用平衡施肥设计,研究了不同因素施肥组合对马铃薯养分吸收、品质、产量及经济效益的影响。结果表明,喀什地区马铃薯茎叶部位N∶P2O5∶K2O比例为1∶0.09∶2.51,块茎部位N∶P2O5∶K2O比例为1∶0.19∶1.86;马铃薯氮素、磷素、钾素百公斤马铃薯块茎养分吸收量为N 1.87 kg、P2O50.75 kg、K2O 4.80 kg,氮素、磷素、钾素三要素之比为1∶0.40∶2.57;最佳施N量15.88 kg/亩、P2O57.97 kg/亩、K2O 7.94 kg/亩,最佳经济产量为1 126 kg/亩。平衡施肥可显著增加马铃薯产量和施肥效益。
In order to construct the index system of potato fertilization in Kashgar, balanced fertilization design was used in this experiment to study the effects of different combinations of fertilizers on nutrient absorption, quality, yield and economic benefits of potato. The results showed that the ratio of N:P2O5:K2O in potato stems and leaves was 1:0.09:2.51 in Kashgar region and the ratio of N:P2O5:K2O in tubers was 1: 0.19:1.86. Potato Nitrogen, Phosphorus, Potassium 100 kg Potato tubers The nutrient uptake was 1.87 kg, P2O50.75 kg and K2O 4.80 kg, respectively, and the ratio of nitrogen, phosphorus and potassium was 1: 0.40: 2.57. The best N application rate was 15.88 kg / mu and P2O57.97 kg / Mu, K2O 7.94 kg / mu, and the best economic output is 1 126 kg / mu. Balanced fertilization can significantly increase potato yield and fertilizer efficiency.