3414+1 Fertilizer Efficiency Experiment for Potato

Using potato variety Hui-2 as the material,the fertilizers included urea,superphosphate,potassium sulfate and organic manure,and the effects of different fertilization treatments on the yield and economic benefit of potato were studied in order to determine the fertilizer requirement regularity,fertilizer rate and fertilization time.The fertilizer application was designed by 3414 method,15 000 kg/hm2 organic manure was applied as basal manure,80% of urea was used as basal manure,10% was used to topdressing at adequate seedling stage and budding stage,respectively,and P and K fertilizers were used as basal manure.The results showed the fertilization could delay the growth stages,and increase the yield and economic benefit.The effect of 391.35 kg/hm2 urea,750 kg/hm2 superphosphate and 660 kg/hm2 potassium chloride was the best,with which the yield was the highest(13 873.5 kg/hm2)and the net income per area was the highest(28 417.5 Yuan/hm2).