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苹果树氮素营养诊断及施用技术兼答山西读者陈素氮素居果树营养中的三大要素之首，是构成蛋白质、叶绿素、维生素、激素、核酸、酶等有机化合物的主要成分，果树氮素营养盈亏的鉴别诊断是指导其施肥的依据，一般常用的诊断方法有两种：１、外部形态诊断法。果树的氮素营养...
The diagnosis and application technology of apple tree nitrogen nutrition is the first of three major elements in the nutrition of apple trees in Shanxi Province. It is the main component of the organic compounds that constitute protein, chlorophyll, vitamins, hormones, nucleic acids and enzymes, The differential diagnosis of nutritional profit and loss is to guide the fertilization basis, there are two commonly used diagnostic methods: 1, external morphology diagnosis. Fruit tree nitrogen nutrition ...