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Studies on Rubber (Hevea brasiliensis) Trees Exist Plant Type after Planting and Available Tapping Tree of Rubber Plantation in China

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DOI: 10.4236/ajps.2014.520318    3,957 Downloads   5,265 Views   Citations

ABSTRACT

Existing plant types of rubber tree after planting and available tapping tree were investigated, and there were about 28 rubber plantations with different tapping years of 8 varieties “CATAS7-33-97”, “CATAS8-79”, “CATAS7-20-59”, “PR107”, “RRIM600”, “GT1”, “INA873”, “93-114”in South China. The results showed that there were six kinds of existing plant types of rubber tree after planting of rubber plantations, which were available tapping trees, wind damaged trees, cold damaged trees, tapping panel dryness trees, absent trees and weak trees, respectively. These data investigated also showed rubber trees under available tapping, stoppage due to tapping panel dryness, absence, wind damage, cold damage and weakness were counted and calculated and made up for 72.21%, 14.75%, 5.61%, 3.86%, 2.68% and 1.89%. Tapping panel dryness trees, wind damage and absent trees are major factors for the loss of tapping rubber trees in the rubber plantations. Of these investigated varieties, available tapping trees per 100 trees of rubber plantation of “PR107”at the 1st, 12th, 14th, 16th, 20th, 24th tapping year were 96, 67, 70, 75, 66, 46 trees in Hainan planting zone, respectively. Available tapping trees per 100 trees of rubber plantation of “RRIM600”at the 9th, 15th, 20th, 22nd tapping year were 88, 62, 55, 36 trees in Yunnan planting zone, respectively. Available tapping trees per 100 trees of rubber plantation of “93-114” at the 10th, 19th, tapping year were 94, 62 trees in Guangdong planting zone. These results showed that available tapping trees of rubber plantation decreased with increasing tapping age under different planting zones in China.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Qi, D. , Zhou, J. , Xie, G. and Wu, Z. (2014) Studies on Rubber (Hevea brasiliensis) Trees Exist Plant Type after Planting and Available Tapping Tree of Rubber Plantation in China. American Journal of Plant Sciences, 5, 3017-3021. doi: 10.4236/ajps.2014.520318.

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