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核桃是一种重要的木本油料树。但由于多年来沿用种子繁殖和管理技术上的落后,造成了品种退化,结果迟,产量低。截至1981年,我区核桃树总株数464.24万株,结果树203.86万株,占总株数的44％,核桃产量622.9万斤,结果树平均株产仅3斤。为了提高核桃树产量,促进核桃生产的发展,我们从1977年开始,进行了以修剪为主的增产效果试验,现将试验情况整理如下。
Walnut is an important woody oil tree. However, due to the technical backwardness in seed breeding and management over the years, the varieties have been degenerated, the results have been delayed and the yields have been low. As of 1981, the total number of walnut trees in our district was 4,642,400 with a result of 2,036,600 trees, accounting for 44% of the total. The output of walnuts was 6,229,000 kg, and the average yield of the tree was only 3 kg. In order to improve the yield of walnut trees and promote the development of walnut production, we started from 1977 to pruning-based stimulation test, the test is now organized as follows.