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从1983年起,我县接受国家农业技术推广总站下达的改造苹果低产园的项目以来,已改造低产果园15,952亩。去年秋季测产,平均亩产1,689斤,亩增产481.5斤。全县共增产苹果783.9万斤,增收235万元。两年多的实践证明,因地制宜地改造低产果园是发展果品生产和提高果园收入的一条捷径。一、果园低产的原因1.土壤瘠薄,肥力差。山地果园多数土壤瘠薄,据抽样测定,含有机质0.5～0.8％,全氮含量0.045～0.05％,速效磷含量6～7ppm,速效钾为
Since 1983, our county has accepted 15,952 mu of low yield orchards since it accepted the project of transforming the apple low-yielding garden issued by the National Agricultural Technology Extension Station. Measured last fall, the average yield 1,689 catties, mu yield 481.5 kg. The county increased a total of 783.9 kilograms of apples, an increase of 2.35 million yuan. More than two years of practice have proved that it is a shortcut to develop low-yield orchards in order to develop fruit production and increase orchard income. First, the reasons for low yield orchard 1. Infertile soil, poor fertility. Most of the soil in the mountainous orchards is infertile. According to the sampling, it contains 0.5-0.8% of organic matter, 0.045-0.05% of total nitrogen content, 6-7 ppm of available phosphorus,