您要查找的是不是:
- major forest tree 主林木
- North American forest tree with light green leaves and edible nuts. 北美的一种森林乔木,淡绿色叶,坚果可食。
- Owners and operators of timber tracts, forest tree nurseries, sawmills. 林地,林木苗圃及锯木厂的所有者和经营商。
- Only a few forest tree species can develop viable seed from unpollinated ovules. 只有少数林木可以从未授粉的胚珠发育成有活力的种子。
- Macrotermes barneyi Light is a major termite in Anhui, infesting forest trees and reservoir dame. 黄翅大白蚁是安徽危害林木、水库堤坝的主要蚁种。
- In this paper, biomass of the major forest types and hydrologic features were studied in small watershed, aiming at soil and water conservation of Yangtze River. 本文主要是针对长江流域蓄水保土的需求,以小流域为单元,对大别山区主要森林类型的生物量与水文生态特征进行了研究。
- Common forest tree of the eastern United States and Canada,used especially for pulpwood. 美国东部和加拿大一种常见的森林树种,纸浆用树种。
- The prospects of development in tree genomics are discussed, which may be implicative for accelerating forest tree genomics studies in China. 另外,探讨了林木基因组学研究的发展趋势,以期为我国林木基因组学研究提供有益的参考。
- Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos. 许多林木树种都有颈卵器,受精以后便产生许多原胚。
- Nesting in coniferous forest, often greenwood, miscellaneous wood forest types of forest tree thorns or short. 营巢在针叶林、常绿林、杂木林等各种类型森林的荆棘或矮树上。
- Paulownia produces our country formerly, it is important commercial forest tree is planted one of. 泡桐原产我国,是重要的用材林树种之一。
- North American silkworm moth; larvae feed on the leaves of forest trees. 北美洲的蚕蛾;幼虫吃森林的树叶。
- We launched projects to protect the natural forests in major forest areas and along the upper and middle reaches of the Yangtze River and the Yellow River. 在重点林区和长江、黄河上中游开展了天然林保护工程,在生态脆弱地区有步骤地开展了大规模退耕还林还草。
- Study on the contents of secondary metabolites in the bark of high forest tree model and leaf-oriented tree model of Eucommia ulmoides Oliv. 杜仲乔林与叶林树皮中次生代谢物含量的比较。
- Critical temperatures are only now being determined for forest trees. 临界温度现已在林木方面有所判定。
- The new uniform index is easy to calculate, intuitionistic to understand and rational, which is actually used to control the forest tree's p... 新的均匀度指标计算方便,有更好的理论依据和直观性,特别适用于森林择伐对空间格局的控制。
- Erect forest tree of Cuba and Jamaica having variably hairy leaves and orange-yellow or orange-red flowers,yields a moderately dense timber for cabinetwork and gunstocks. 古巴和牙买加的竖直的森林树种,有易变的多毛的树叶和橘黄色或橘红色的花,为细木工和枪托产生一种中等密度的木材。
- Aye-ayes spend their lives in rain forest trees and avoid coming down to earth. 狐猴一辈子都生活在雨林的树上,从来不下到地上来。
- Community entrance is the forest tree bursts, walking Road, gingko, Chinese parasol tree, deodar cedar, Kwong Yu-lan, Xiang Zhang, tree, Tsui Chuk, a green parks, people live. 这种格局形成“离尘不离城”,闹中取静,与上世纪30年代淮海路、衡山路上的老洋房十分相像。
- Dynamics of soil NO3--N and its response to N additions in the major forests (pine, mixed and monsoon evergreen broadleaf forests) of Dinghushan Biosphere Reserve were studied by using ion-exchange resin bags method. 用离子交换树脂袋法,研究了鼎湖山三种森林(马尾松林、马尾松针叶阔叶混交林和季风常绿阔叶林)土壤硝态氮对外加氮的响应特征。