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研究了氮、磷、钾配合施用对宣薯3号一级脱毒原种产量和种薯数量的影响,结果表明:马铃薯的产量最佳施肥方案为农家肥11 250kg/hm2、N肥172.5kg/hm2、P肥75kg/hm2、K肥150kg/hm2,N∶P∶K比例为1∶0.4∶0.9,产量高达30 481.5kg/hm2,产投比为3.1∶1;马铃薯种薯数量的最大施肥方案为N肥156kg/hm2、P肥85.5kg/hm2、K肥120.5kg/hm2,N∶P∶K比例为1∶0.55∶0.77,产量高达158 055个/hm2。
The effects of nitrogen, phosphorus and potassium fertilizers on the yield and the number of seedlings of Xishuang No.3 primary detoxification were studied. The results showed that the best yield of potato was 11 250kg / hm2 and 172.5kg N fertilizer / hm2, P fertilizer 75kg / hm2, K fertilizer 150kg / hm2, N: P: K ratio of 1:0.4:0.9, the yield of up to 30 481.5kg / hm2, production to investment ratio of 3.1:1; the largest number of potato seed The fertilization program is N fertilizer 156kg / hm2, P fertilizer 85.5kg / hm2, K fertilizer 120.5kg / hm2, N: P: K ratio of 1: 0.55: 0.77 and the yield of 158 055 / hm2.