论文部分内容阅读
一、橡胶树(Hevea brasiliensis)是热带雨林中的高大上层乔木,它在系统发育中同化了热带森林的环境条件,因此它的生长发育和产胶要求高温、高湿、静风、沃土和近乎全光照的热带森林环境。它象一种植物计,以自身能否在该地生长、发育、开花、结果和产胶为尺度,指示该地是否符合热带森林的环境条件。三叶橡胶树属的各个种分布于南美洲北纬5°~南纬15°,西经48°~78°之间、面积约为700万平方公里的亚马孙河流域的广大地区内。橡胶树移至我国,生态环境已经发生
First, Hevea brasiliensis is a tall, upper-arboreal tree in the tropical rainforest that assimilates the environmental conditions of tropical forests during phylogenetic development. Therefore, its development and production require high temperature, high humidity, quiet wind, fertile soil and almost all Light tropical forest environment. It looks like a plant, on the scale of whether it can grow, grow, flowering, fruiting and producing in the area, indicating whether it meets the environmental conditions of tropical forests. All species of the genus Trifolium are distributed in the vast Amazonian basin of South America with latitude 5 ° to latitude 15 ° and longitude 48 ° to 78 ° and an area of about 7 million square kilometers. Rubber tree moved to China, the ecological environment has taken place