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一、前言 本地早在黄岩传统桔区广泛栽培,据1982年统计,面积已从1952年的2206亩,增加到14817亩,占全县柑桔总面积的23.8％,但是本地早存在着投产迟和部份成年树低产的情况,影响了进一步发展。为使这一良种在生产上发挥更大的作用,我们于1983年秋季在黄岩对本地早丰产和低产两类型的树体结构与树性进行了调查与分析,以期探明它们之间的差异和原因,为改造低产树提供依据。
I. Introduction As early as the local Huangyan traditional orange widely cultivated area, according to 1982 statistics, the area has increased from 2206 acres in 1952 to 14817 acres, accounting for 23.8% of the county’s total area of citrus, but the local early existence of production late And some adult trees low yield, affecting the further development. In order to make this kind of seed play a greater role in production, we conducted a survey and analysis on the structure and tree characteristics of two types of early-yielding and low-yielding tree species in Huangyan in the autumn of 1983 in order to find out the differences between them And the reasons for the transformation of low-yielding trees provide the basis.