一、施肥量足,比例适宜。实践证明,苹果的产量和品质,在一定范围内,随着肥量的增加和合理配比而提高,而当前生产中的施肥量都处于较低水平,比例也不尽合理。所以,要使苹果优质丰产,就必须做到施肥量足,比例适宜。氮,可增强树势,提高产量,磷钾肥,可缓和树势、改进品质。所以,弱树多施氮肥,旺树多施磷钾肥,中庸树按常规比例配合。确定苹果树的施肥量,应以座果量为 First, the amount of fertilizer, the appropriate ratio. Practice has proved that the output and quality of apple, within a certain range, with the increase of fertilizer and rationally increased, and the current production of fertilizer are at a low level, the ratio is not entirely reasonable. Therefore, to make apple high-yield, we must achieve adequate fertilizer, the proportion of appropriate. Nitrogen, can enhance the tree vigor, increase production, phosphorus and potassium fertilizer, can ease the tree vigor, improve quality. Therefore, weak trees and more nitrogen fertilizer, Mongolian more phosphorus and potassium fertilizer, moderate tree according to the conventional proportion. To determine the amount of apple tree fertilization, fruit should be the amount of fruit