第四类有二级国家重点保护野生树种樟树32株。
The fourth category has 32 plants of Cinnamomum camphora as the second grade national key protective plants.
昆明野生树种适应性较好，而原产高海拔地区的树种适应性较差。
The adaptive ability of wild species in Kunming is promising, and that of the species from high altitude areas is undesirable.
在营造速生人工林时，适当引入鸟播的野生树种，可加速人工林的自然演替速度和提高人工林的生态效益。
The ecological function of plantations can be improved by using a combination of fast growing exotic species and bird dispersed native species so as to accelerate succession.
种植园可有不同类型的管理系统(如集约型，半集约型)和使用不同类型的遗传材料(如野生材料，基因改良树种)。
Plantations can have different types of management systems e.g. intensive, semi-intensive and use different types of genetic material e.g.
调查了大兴安岭北部林区野生果树种质资源及其开发利用现状。
Wild fruit trees resources in northern forest region of great Xing an Mountain and actuality of being exploited and utilized were researched.
树种以油松、云杉、白桦、杨、柳为主，经济林有苹果、梨、桃、杏等，野生牧草种类较多，近100种。
Tree species in Chinese pine, spruce, birch, Yang, Liu mainly forests are apple, pear, peach, apricot and so many kinds of wild grass, nearly 100 species.
对郑州果树所国家果树种质郑州葡萄圃内的808份种质（品种和野生类型）的卷叶病自然发病情况进行了调查研究。
The occurrence of GLRV of 808 accessions of grape cultivars and wild races grown in open field was investigated.
对郑州果树所国家果树种质郑州葡萄圃内的808份种质（品种和野生类型）的卷叶病自然发病情况进行了调查研究。
The occurrence of GLRV of 808 accessions of grape cultivars and wild races grown in open field was investigated.
应用推荐