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- W2357268656 abstract "[Objective]The research aimed to study the effects of different ratio of NPK on the yield of potato intercropped with sugarcane in Lateritic red earth area of Guangxi,and seek the best NPK ratio for nutrition of potato intercropped with sugarcane.[Method] Two field experiments which were adopted the optimization compound design(311-A) were conducted in 2011 and 2012,respectively,on Long'an county,Guangxi.The polynomial regression models of fertilizer application and quadratic of three factors were established by SAS statistical analysis software,and optimum nutrient simulation models of potato were obtained by computer processing.[Result]The combined application of low nitrogen and mid-high potassium and phosphorus fertilizer contributed to higher potato yield in the experimental condition.The regression model of the potato yield(Y11 and Y12) and the amount of N(X1),P(X2),K(X2) were established by SAS statistical analysis software,in 2011 and 2012,respectively.They were Y11=14 725.28-415.39X1+741.99X2+607.83X3-447.92X1X2-144.09X1X3-405.83X2X3-267.82X21-795.67X22-642.10X23,R=0.927 2 and Y12=14 342.60-896.25X1+548.62X2+925.51X3+67.81X1X2+531.60X1X3-99.00X2X3-904.00X21-1 121.36X22-596.64X23,R=0.926 6.The regression mathematics model of potato yields were better fitting with actual situation in the locality,and had higher practical value,so it could be used for fertilizer decision and forecast.Using the computer to carry on the optimization,the NPK dosage of the best potato yield intercropped with sugarcane was obtained.The dosage of N,P2O5,K2O were 108.8-140.6,172.5-204.4 and 285.9 kg/hm2,respectively.[Conclusion]The best NPK ratio of potato yield intercropped with sugarcane was 1∶(1.23-1.88)∶(2.03-2.63)." @default.
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- W2357268656 date "2012-01-01" @default.
- W2357268656 modified "2023-09-24" @default.
- W2357268656 title "Study on Optimum Fertilization Model of Potato Intercropped with Sugarcane" @default.
- W2357268656 hasPublicationYear "2012" @default.
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