Study on innocuous fertilization operational model of orange species fruit tree.
Southwest China Journal of Agricultural Sciences(2009)
Abstract
The construction of innocuous fertilization operational model was an effective approach,which could improve innocuous fertilization effect of orange species fruit tree.At the same time,this model was the crucial basis that implemented informlization of orange species fruit tree.In the paper,the argument,method and process of model construct were described.The model components were the species of orange(X1),the age of fruit tree(X2),production(X3)(kg/p/y) and organic content of soil(X4).The x1,x2 and(x3) were the primary factors which affected fertilization dosage of N,P and K elements.The(x4) was the primary factor of the nature supply dosage of soil N,P and K elements.The mathematic expressions of the model were a set of clear layer and mutual reliant functions based on multivariable quadratic binomial and S curve.
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Key words
fertilization,model,innocuous,orange,woody plants,mathematical models,soil organic matter
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