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一.橡胶树在天然橡胶中的地位人们已知的产胶植物在500个种以上,最常见的有下列12个科:大戟科(Euphorbiaceae)、桑科(Moraceae)、夹竹桃科(Apocynaceae)、萝摩科(Asclepiadaceae)、赤铁科(Sapotaceae)、菊科(Compositae)、杜仲科(Eucommiaceae)、卫矛科(Celastraceae)、天南星科(Araceae)、罂粟科(Papaveraceae)、桔梗科(Campanulaceae)、山梗菜科(Lobeliaceae).上12个科中以大戟科的种最多,其中最主要的为橡皮树属(Hevea),它有18个种:巴西橡胶(Hevea brasiliensis)、宾氏橡胶(Hevea benthamiana)、山橡胶(Hevea collina)、混橡胶(Hevea confusa)、异色
The status of rubber tree in natural rubber It is known that there are more than 500 kinds of rubber-producing plants, the most common are the following 12 families: Euphorbiaceae, Moraceae, Apocynaceae Asclepiadaceae, Sapotaceae, Compositae, Eucommiaceae, Celastraceae, Araceae, Papaveraceae, Campanulaceae Campanulaceae and Lobeliaceae.The genus Euphorbiaceae is the most abundant in the 12 genera, of which Hevea is the most important species, and it has 18 species: Hevea brasiliensis, Hevea benthamiana, Hevea collina, Hevea confusa,