This paper is issued by potted Litsea glutinosea and Casuarina trickle test,applied quadratic general rotation design, the ratio of different fertilization on the growth status of the two species. Through the establishment of mathematical model equations for significance testing and optimal solution for optimum N、P、K、fertilization ratio. Application of DRIS graphic and index, respectively, diagnosis of plant nutrition, fertilizer obtained the needs of each processing order. The result aims to fertilizer, im...
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