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《Journal of Fujian Forestry Science and Technology》 2018-02
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The Growth Effect of Pinus kesiya var. langbianensis in Early Afforestation with Cutting of Improved Variety

TANG Hongyan;TONG Qing;DENG Guixiang;ZHAO Hangwen;DUAN Lijing;JIA Ping;Forest Institute of Pu'er City;Yunnan General Station of Tree Seeds and Seedings;  
We created a demonstration forest of Pinus kesiya var.langbianensis with cuttings of improved variety,and did the contrast test of the early growth with different planting density(2 m×2 m,2.5 m×3 m,3 m×4 m) and different tree species(the seedings and cuttings of Pinus kesiya var.langbianensis,the cuttings of P.kesiya,the seedings and cuttings of Pinus elliottii×P.caribaea).We compared the measurement data for the fourth year after afforestation.In the experiment of different tree species,there was a significant difference in the level of 0.01 between the tree height of the cuttings of Pinus kesiya var.langbianensis and others.The average tree height of cuttings of Pinus kesiya var.langbianensis were more 39.5% 、24.7% 、46.5% 、30.1% than the cuttings of P.kesiya,the cuttings of Pinus elliottii×P.caribaea,the cuttings of Pinus elliottii×P.caribaea,the seedings of Pinus kesiya var.langbianensis.There was a significant difference in the level of 0.05 between the ground diameter of the cuttings of Pinus kesiya var.langbianensis and the cuttings of Pinus elliottii×P.caribaea.The average breast diameter of cuttings of Pinus kesiya var.langbianensis were more 8% 、-15.3% 、6.4% 、-9.1% than the cuttings of P.kesiya,the cuttings of Pinus elliottii×P.caribaea,the cuttings of Pinus elliottii×P.caribaea,the seedings of Pinus kesiya var.langbianensis.In the experiment of different planting density,there was not a significant difference at the tree height.There was a significant difference in the level of 0.05 between the ground diameter of the 3 m×4 m and others.The average ground diameter of 2.5 m×3 m were more 8% 、-15.3% than others.The average tree height and breast diameter of three different density were 327 cm and 56 mm.Thus,it could be seen that the afforestation effect of the cuttings of Pinus kesiya var.langbianensis was significantly higher than others,and the afforestation density of 2.5 m×3 m was the best.
【Fund】: 云南省省级林业科技推广示范项目(思茅松、云南松扦插繁育试验示范 [2013]TSYN27号)
【CateGory Index】: S791.24
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