杉木幼林不同抚育方法效果的评价  

Experiment on Different Tending Method for Juvenile Chinese Fir(Cunninghamia lanceolata)

作　　者：张先仪 盛伟彤 邓宗付[1] 李旭明[1] 张小文[1] 

机构地区：[1]中国林业科学研究院林业研究所,中国林业科学研究院亚热带林业实验中心

出　　处：《林业科学研究》1994年第4期394-398,共5页Forest Research

摘　　要：在江西分宜县上村林场地位指数≥１６，没有或极少五节芒、茅草和水竹的地段，对杉木幼林采用以下抚育方法：①全面刀抚；②全面刀抚加局部松土除草；③全面松土除草。连续３ａ试验观测，结果表明：①和②法比③法植被覆盖度分别大５％～２５％，侵蚀量少４０％以上；３种抚育方法对林水生长均无显著差异，单位面积的抚育用工量，①法仅为②、③法的１／３左右。所以综合看来，以①法效果为佳。The experiment of the effect of different tending methods on the growth andeffect of soil and water conservation were conducted in the juvenile Chinese fir plantation inthe Experimental Centre of Subtropical Forestry,CAF in Fenyi County,Jiangxi Provincefrom 1991 to 1993.The experimental site was located in the central production area of Chi-nese fir in middle-subtropical zone.There were 12 sample plots in the experimental areawhere the secondary shrubs were distributed before.The soil was yellow soil with a depth of1 m surface soil and 25 cm of humus,and the site index was 16～ 18.The Chinese fir treeswere planted after burning on the ground.Three tending methods were used as follows :M.1,a thorough weeding without soil-loosening,M.2,a thorough weeding with partial soil-loosening,M.3, a thorough weedingwith soil-loosening. The results indicated that the differences of tree growth among themwere not significant.The vegetation biomass of M. 3 was less than that of M.1 and M.2(M.1-5.87 t/hm2,M.2-5.89 t/hm2,M.3-4. 99 t/hm2).Soil erosion of i.71 t/hm2 causedby M.3 was the highest,that of M.2,the second,1.15t/hm2 and that of M.1 was 1.08t/hm2.For the consumption of labour,M.1 was the least one of 9.2 labour-day/hm2,M.2 thegreatest one of 16. 7 labour-day/hm2,M.3 12.6 labour-day/hm2. Therefore M.1 was themost satisfactory method, which should be adopted on a large scale,especially for the youngplantation without the distribution of Miscanthus floridulus,Imperata clindrica,and Phyl-lostachys congesta which have to be got rid of from the young Chinese fir stand when they appear.

关 键 词：杉木 人工林 幼林抚育 效果评价 

分 类 号：S791.270.6[农业科学—林木遗传育种]