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为研究不同培育措施对杉木新造林和大径材生长量、经济效益的影响,在开化县、龙泉市和庆元县各2个区块开展了间伐抚育和平衡施肥的试验。通过在各区块随机选择小班进行样地设置,每小班设间后施肥、间后不施、不间不施3个处理。结果表明,杉木林通过2年的密度控制、施肥等抚育技术的应用,间后施肥林地平均胸径生长量达到2.6 cm,比对照提高1.8 cm;间后施肥样地蓄积2年生长量达到37.70 m~3·hm~(-2),间后不施样地蓄积2年生长量达到31.30 m~3·hm~(-2),对照样地蓄积2年生长量仅20.72 m~3·hm~(-2);杉木示范林189.27 hm~2两年比对照增加经济效益共1 617.46万元,单位面积增加4.273万元,还可就地解决农村剩余劳动力。
In order to study the effects of different cultivation methods on the growth and economic benefits of Chinese fir plantations and large-diameter timber, we conducted the experiments of thinning and balanced fertilization in two blocks in Kaihua, Longquan and Qingyuan counties. By randomly selecting small classes in each block to set up the sample plots, after each class of inter-fertilization, between the post-application, no non-application of three treatments. The results showed that the average DBH of intercropping fertilization forest reached 2.6 cm, which was 1.8 cm higher than that of the control. After two years of fertilization, the two-year growth rate reached 37.70 m ~ 3 · hm ~ (-2), the growth of two years after the interplanting was 31.30 m ~ 3 · hm ~ (-2), while that of the control plot was only 20.72 m ~ 3 · hm ~ (-2); Cunninghamia lanceolata forest 189.27 hm ~ 2 two years than the control to increase economic benefits a total of 16,174,600 yuan, an increase of 42,730 yuan per unit area, but also on the spot to solve the rural surplus labor force.