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:198 6～ 1996年对全县分布面广的平原河滩砂地杨树低产林分 ,中、南部低山丘陵赤杉低产林分 ,中、南部低山丘陵刺槐低产林分等 3个类型 ,通过采用整地施肥、抚育管理、采伐更新、改建树种、间伐修枝、加强封护和加强病虫害综合防治等配套改造措施 ,取得了显著的经济效益、生态效益和社会效益 ,为全省乃至全国同类地区低产林分的改造 ,提供了科学依据
1986. From 1996 to 1996, there were 3 types of low-yield poplar forest in plain flood plain sandy land, low-yield forestation of red-stem fir in central and southern part of China, low-yield acacia locust in middle and southern hilly areas, We have achieved significant economic, ecological and social benefits by using matching measures such as land preparation and fertilization, tending and management, logging and reforestation, tree reforestation, thinning and pruning, enhanced protection and enhanced pest and disease control, and have achieved remarkable economic benefits for both the province and the whole country. The transformation of low yield forest provides a scientific basis