Study on Mathematical Model of Balanced Fertilization for Earlier Tomato in Lower Altitude Areas in Guizhou
Zhao ZeYing · Anhui nongye kexue · 2007
[Objective] The aim of this paper was to study the relationship between the yield and application amount of N,P and K in lower altitude areas of Guizhou Province.[Method] Using the quadratic regression design of 3414,mathematical model of fertilization for earlier tomato was studied in lower altitude areas in Guizhou Province by taking the N,P and K as factors and the yield of tomato as objective function.[Result] According to the mathematical model,with the optimal proportion of fertilizer N,P and K of 104.55 kg/hm2,112.95 kg/hm2 and 502.95 kg/hm2,respectively,the yield could reach 115 719.00 kg/hm2.[Conclusion] References were offered in this paper for the application of N,P and K as well as making fertilization decision of tomato expert system.