Title: Effects of Combined Application of NPK and Organic Fertilizer on Yield and Quality of Potato
Abstract: [Objective] The aim was to provide the technical guidance for potato cultivation with high yield and high efficient in Wulanchabu region of Inner Mongolia.[Method] With potato variety Kexin 1 as the material, urea(X1),diammonium phosphate(X2),potassium sulfate(X3),organic fertilizer(X4) as the decision variable and potato yield,starch content and commodity rate as the objective function,the design of ordinary second order rotatable regression was used to study the effects of different fertilization treatment on yield and quality of potato.On the basis of that,the optimum fertilization model was established.[Result] The optimum fertilization models for highest yield,quality,and commodity rate were established resp.,and the fitting degree of each model on relative index reached significant level.Under the tested condition,the application rates of urea,diammonium phosphate,potassium sulfate,organic fertilizer were 203.18-265.13,134.49-155.87,172.14-207.05 and 43 635-47 580 kg/hm2 resp.when the yield,starch content and commodity rate of potato were higher than 10 177.33 kg/hm2,15.53% and 80.69% resp.[Conclusion] The reasonable combined application of NPK and organic fertilizer could significantly improve the yield and quality of potato.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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