根据浙江省宁波市林业局去年底的调查,被人们称为森林癌症的松材线虫已在该市象山、鄞县为害猖獗,严重威协着松类的生存,影响林业社会效益、经济效益、生态效益的综合发挥。 前几年,人们一度重视发展针叶林,据宁波市近年的统计,全市229万亩马尾松林中就有50%是低产林。 为了充分发挥森林三大效益,减少病虫危害,为农村致富服务,当前的紧迫任务是必须采取强有力的措施,对松类低产林进行改造。其具 According to a survey conducted by the Ningbo Forestry Bureau of Zhejiang Province at the end of last year, pine wood nematodes, which are referred to as forest cancer, have been rampant in the Xiangshan and Yinxian areas of the city and seriously threaten the survival of pine trees and affect forestry social benefits, economic benefits and ecological Benefit from the comprehensive play. A few years ago, people once emphasized the development of coniferous forests. According to the statistics of Ningbo in recent years, 50% of the 229 million mu of masson pine forests in the city are low-yield forests. In order to give full play to the three major benefits of forests, reduce pests and diseases, and serve the cause of rural prosperity, the pressing task now is to take strong measures to transform the low-yield pine forests. It has