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云南垦区植胶经历了多次严重自然灾害,开封胶园的病残树越来越多。据1982年的调查,全垦区开割胶园中共有病残树157.5万株,平均每亩4.3株。这些病残树的产胶量虽然比正常树低,但是由于数量很大,其产量在我区总产量中占有相当大的比例,所以延长病残树的经济寿命和合理割胶,对于实现胶园高产稳产具有十分重要的意义。故此,本文就我区病残树的保护和复割问题进行一些讨论。
Rubber reclamation in Yunnan Province has undergone many serious natural disasters. There are more and more sick trees in Kaifeng rubber plantations. According to the survey conducted in 1982, a total of 1.575 million strains of diseased trees were found in the plastic cutting zone in the entire reclamation area, with an average of 4.3 strains per acre. Although the yield of these diseased trees is lower than that of the normal trees, their yield accounts for a considerable proportion of the total output in our region due to the large quantity, thus prolonging the economic life span of the diseased trees and rational tapping. As a result, High and stable yield is of great significance. Therefore, this article discusses the protection and re-harvesting of the diseased tree in our district.