目前,我国园林绿化苗木以绿色为主,植被景观比较单调,缺乏彩叶植物,特别是高大的红叶乔木。虽然近年来从国外引种了北美红枫、鸡爪槭等红叶树种,但这些树种的适应性及适应范围有限,不能满足我国广大地域的需要。由中国科学院成都生物研究所培 At present, the greening seedlings in our country are mainly dominated by vegetation. The vegetation landscape is monotonous, and there is a lack of colorful plants, especially tall red-leaf trees. Although the introduction of red maple trees such as North American maple and Acer palmatum from abroad in recent years, the adaptability and adaptability of these tree species are limited and can not meet the needs of vast areas in our country. By the Chinese Academy of Sciences Chengdu Institute of Biology training