追施不同肥料对马铃薯品种抗疫白产量的影响

为探究追施对马铃薯品种抗疫白产量的影响,设计4个处理,每667 m2施①基肥:二铵16 kg+尿素15 kg+硫酸钾15 kg(对照);②基肥:二铵16 kg+尿素8.6 kg+硫酸钾15 kg,追肥:尿素6.4 kg(追氮区);③基肥:二铵16kg+尿素15kg+硫酸钾7.5kg,追肥:硫酸钾7.5kg(追钾区);④基肥:二铵16kg+尿素8.6kg+硫酸钾7.5 kg,追肥:尿素6.4 kg+硫酸钾7.5 kg(追氮、钾区)。结果表明,追施钾肥的产量最高,其次是追施氮肥和钾肥,但二者差异不显著,排在第三位的是追施氮肥,不追肥的产量最低,但追施氮肥和钾肥的商品率最高。

Influence of Dressing on Yield of the Potato Cultivar Kennebck

Four treatments were designed in order to test effects of dressing on the yield of the potato cultivar Kennebeck.Application of fertilization rate was all calculated based on 667 m2 of land.Treatment Ⅰ : basal fertilizer diammonium phosphate 16 kg + urea 15 kg + potassium sulphate 15 kg(control);Treatment Ⅱ: basal fertilizer diammonium phosphate 16 kg + urea 8.6 kg + potassium sulphate 15 kg;dressing fertilizer urea 6.4 kg(N fertilizer dressing plot);treatment Ⅲ : basal fertilizer diammonium phosphate 16 kg + urea 15 kg + potassium sulphate 7.5 kg;dressing fertilizer potassium sulphate 7.5 kg(K fertilizer dressing plot);and treatment Ⅳ: basal fertilizer diammonium phosphate 16 kg + urea 8.6 kg + potassium sulphate 7.5 kg;dressing fertilizers potassium sulphate 6.4 kg + potassium sulphate 7.5 kg(NK fertilizers dressing plot).The yield was highest when K fertilizer was dressed,and the yield was the second high when NK fertilizers dressed,but the two treatments were not different significantly.The yield was in the third place when N fertilizer was dressed,and the yield was lowest when no dressing was applied.For the percentage of marketable tuber yield,dressing NK fertilizers showed the best result.