| 生物土壤与生态 |
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| Rooting Characteristics of Pinus densiflora var. Zhangwuensis Cuttings in Various Culture Media |
| MENG Peng1,2, ZHANG Xue-li1, LI Yu-ling2, SONG Xiao-dong1, YOU Guo-chun1 |
| 1.Liaoning Province Sand-Fixation and Afforestation Research Institute, Fuxin 123000, Liaoning, China; 2.Forestry College of Hebei Agricultural University, Baoding 071000, Hebei, China |
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Abstract The rooting characteristics of Pinus densiflora var. Zhangwuensis cutting in various media were remarkably different. Analyzing on rooting rate, rooting characters and root system index indicated that the integrated effect was the best in vermiculite media, better in peat media, and inferior in river sand media. The rooting rate of cuttings in peat was the highest, but its root system index was worse than that of cuttings in vermiculite. The rooting ability of cutting in river sand was worse, but its rooting dispersed degree was the highest. The correlation analysis on rooting characteristics of Pinus densiflora var. Zhangwuensis cutting showed that the sum of the branch roots, adventitious roots(main roots born to different parts in section of cutting bottom) and the longest adventitious roots length respectively had positive correlation with the total length of roots; The correlation between the sum of the branch roots, the sum of adventitious roots and the length of the longest adventitious roots was also obviously positive; There was negative correlation between the length of the longest adventitious roots and the thickness of the longest adventitious roots.
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Received: 23 March 2007
Published: 20 May 2008
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2008, Vol. 28 
