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我国北方各地红星苹果栽植比重很大,七十年代栽植的已值盛果期,但多数果园亩产徘徊在1000公斤上下,而且大小年现象较重,这种状况亟待解决。一、低产原因 (一)营养不足,树势衰弱,通过对晋中与临汾地区不同生态类型果园调查,成龄乔砧红星苹果花芽形成能力并不次于国光,但其花序座果率与花朵座果率
Red Star apple around the northern part of our country a large proportion of planting, cultivation of the seventies has been the value of full fruit, but most of the orchard hovering in the 1000 kilograms up and down, and the size of the phenomenon of heavier, this situation to be solved. First, the causes of low yield (A) lack of nutrition, tree weakness, through the Jinzhong and Linfen region orchards of different ecological types of investigation, the age of Joe Joe Red Apple apple flower bud formation ability is not inferior to the national light, but the inflorescence fruit rate and flowers Fruit rate