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合理施肥是果树壮树、促花、高产和优质的重要物质基础。但是,如果不采取科学用肥方法,不仅达不到预期目的,有时还会因“肥害”而得不偿失。所谓果树“肥害”,是指因施肥不当而使树体某些部位灼伤,或出现其它可见性伤害,但不包括因施肥不当而引发的生理性障害。生产中常见的“肥害”有下列几种:①根外追肥时,因肥液浓度过高,造成叶片焦灼、
Rational fertilization is strong fruit trees, flowers, high yield and quality of the important material basis. However, if we do not adopt the scientific method of using fertilizers, we will not only fail to achieve our desired goals but also sometimes lose their lives due to “fatalities”. The so-called “fattening” of fruit trees means burns of certain parts of the tree due to improper fertilization or other visible injuries but does not include physiological disorders caused by improper fertilization. Common production of “fat” have the following: ① root top dressing, due to high concentration of fertilizer, causing leaves anxious,