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一、存在问题 1.结果树产量低,寿命较短 青石山区桃树栽植后6～8年开始衰弱,产量下降,7年生雨化露平均亩产只有800kg左右。主要原因有:(1)砧木适应性差:青石山区土壤瘠薄,粘性大,水浇条件差。用毛樱桃等劣砧建桃园的约占30％,是造成青石山区桃树产量低、寿命较短的直接原因。(2)品种丰产性差:品种老化是限制桃树产量提高的一个重要因素,甚至有人用实
First, the existing problems 1. The results of tree production is low, short life expectancy Qingshi peach trees planted 6 to 8 years after the beginning of weakness, production decline, 7-year average rainfall of only about 800kg per mu. The main reasons are: (1) poor adaptability of rootstock: Qingshi mountain soil barren, sticky, poor water conditions. About 30% of Taoyuan’s are made of hay cherries and other poor anvils, which is the direct cause of low peach yield and short life expectancy in Qingshi Mountainous area. (2) Variety and poor yield: Variety aging is an important factor limiting the yield of peach trees, and even some people use it