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我场去年营造湿地松5051亩,其中母树林2065亩,丰产林2996亩。八月份经调查,母树林成活率78.8％,丰产林成活率81.8％。成活率不够高的原因是受到了比较严重的病虫为害,尤其是白蚂蚁为害最大(母树林死苗中白蚂蚁为害占39.7％,丰产林死苗中白蚂蚁为害占40.2％)。这是引种工作中遇到的新问题,如果不尽速采取有效措施,将给国家造成很大损失。
My field last year to create 5051 acres of pine, of which 2065 acres of mother woods, 2996 acres of high yield forest. After investigation in August, the survival rate of mother woods was 78.8% and that of high-yield forests was 81.8%. The reason why the survival rate is not high enough is more serious pests and diseases, especially the white ants (white ants accounted for 39.7% of dead trees and white ants accounted for 40.2% of dead trees). This is a new problem encountered in the introductory work. If effective measures are not taken promptly, great losses will be caused to the country.