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通过马铃薯测土配方施肥肥效田间试验,以便提高马铃薯的单产,增加经济效益。试验采用“3414”完全试验设计。结果表明,在当地条件下,最佳经济施肥量N 6.04 kg/667 m2、P2O52.53 kg/667m2、K2O 9.26 kg/667 m2,最高产量为1 929 kg/667 m2。三要素比例1:0.420:1.533,肥料投入81.61/667 m2元,鲜薯产值1 735元/667 m2,施肥利润为291元/667 m2,投入产出比1:4.57。采用测土配方施肥能增加马铃薯产量,降低施肥成本,提高肥料当季利用率。氮磷钾肥合理配施,有利于增加薯重和结薯个数,增施钾肥能增加大中薯比例,提高马铃薯商品薯率。
Fertilization through potato soil testing formula fertilizer field trials in order to improve the yield of potatoes and increase economic benefits. Test using “3414” complete experimental design. The results showed that under the local conditions, the best economic fertilization amount was N 6.04 kg / 667 m2, P2O52.53 kg / 667 m2, K2O 9.26 kg / 667 m2, and the highest yield was 1 929 kg / 667 m2. The proportion of three factors is 1: 0.420: 1.533, the input of fertilizer is 81.61 / 667 m2, the output of fresh potato is 1 735 yuan / 667 m2, the profit of fertilizer is 291 yuan / 667 m2, and the input-output ratio is 1: 4.57. Soil testing and fertilization can increase potato yield, reduce fertilization costs and improve fertilizer utilization. Nitrogen, phosphorus and potassium fertilizer rationally, is conducive to increasing the number of tubers and tubers, increasing the proportion of potash can increase the proportion of potato, potato products to improve the potato yield.