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

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Author(s) 

Dongling Qi, Jiannan Zhou, Guishui Xie, Zhixiang Wu

Affiliation(s)

Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Outdoor Key Station of Agriculture Ministry for Observing and Investigating Tropical Agricultural Resources and Ecologic Environment, Danzhou, China.

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 1^st, 12^th, 14^th, 16^th, 20^th, 24^th 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 9^th, 15^th, 20^th, 22^nd 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 10^th, 19^th, 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.

KEYWORDS

Rubber Tree (Hevea brasiliensis), Exist Plant Type, Available Tapping Tree, Rubber Plantations, Different Tapping Years, China

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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