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我县陈湾村于1987年春由河南省黄畈农场调进苹果苗1.2万株,品种为祝光、金帅、元帅、红星等,砧木为海棠果,以4×6米的规格挖窝定植,面积约430亩。1984年,这些果树应进入结果期(树龄为7年生)。但由于果园管理粗放,病虫为害严重,牲畜任意践踏,树行套种高秆庄稼,导致多年只见开花,未见结果。针对上述情况,我们在全面调查苹果树低产的原因的基础上,制订计划,进行改造。 一、低产原因的分析 1、土壤瘠薄,土层浅,严重阻碍了苹果根系的发展 由于建园标准低,没有深翻抽槽,没有施入有机肥,定植后也没有深翻改土、施肥。1984年10月调查,果树根系(吸收根)的分布情况是:在0—20厘米范围内,根系数量占全量的72.6%,在20—
In the spring of 1987, Chenwan Village in our county was transferred 12,000 apple seedlings from Huangpi Farm in Henan Province. The cultivars were Zhuwang, Jinshuai, Marshal and Red Star. The rootstocks were begonia fruit and were planted in a size of 4 × 6m , An area of about 430 acres. In 1984, these fruit trees should enter the fruiting period (7-year-old tree). However, due to the extensive management of orchards, pests and diseases seriously, livestock arbitrary trampling, tree crop intercropping tall stalks, resulting in many years saw only flowering, no results. In response to the above situation, we plan and carry out transformation based on a comprehensive investigation of the causes of low yield of apple trees. First, analysis of low yield causes 1, infertile soil, shallow soil, seriously hindered the development of apple root due to the construction of low standards, there is no deep plowing tank, no organic fertilizer, no deep plowing after planting soil, fertilizer . In October 1984, the distribution of root system (root absorption) of fruit trees was: 72.6% of the total amount of root system in the range of 0-20 cm,