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Principle Of Crop Fertilization One:Balanced Fertilization1. Plant normal growth and development need a variety of mineral nutrition elements, and all kinds of available nutrients in soil may not conform to the tree nutrition demand, need through the artificial method according to the proportion to fertilization, plant nutrition elements that is the principle of balanced fertilization. 2. Balanced fertilization usually has at least NPK nutrient elements, as well as micro-nutrients in the soil. |