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- rare forest tree species 珍稀林木
- 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。
- 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。
- Eucalypt,a fast growing tree species intorduced from outside,is one of forestation tree species in south of China. 尾巨桉是我国从国外引进桉树后改良的一种速生树种,是我国南方各省主要造林树种之一。
- Acacia crassicarpa is the one of main forestation tree species in the South of our country which was imported in recent years. 厚荚相思是近年来我国南方引进的主要营林树种之一,它具有适应性强、速生丰产、改良土壤、用途广泛等特点。
- Cunninghamia lanceolata,Pinus massoniana and exotic pines were selected as main forestation tree species in the forestation project in Zhejiang province granted loan by the World Bank. 浙江省主要造林树种杉木、马尾松、国外松,通过大规模项目造林实施与试验示范林的测试后,对其商品林经营技术及推广应用,进行了较为系统的总结。
- Genetic engineering and lignin biosynthetic regulation in forest tree species 林木遗传工程及木质素的生物合成调节
- 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。
- Choice of Ecological Landscape Forest Tree Species along HuhehaoteBaotou Expressway 呼包高速公路生态景观林树种选择探讨
- 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。
- ANALYSIS ON SUCCESSION TREND AND PHYSIOLOGICAL CHARACTERS OF SECONDARY FOREST TREE SPECIES IN LIMESTONE MOUNTAIN OF EASTERN ANHUI PROVINCE 皖东石灰岩山地次生林演替趋势与树种的生理特性分析
- THE EFFECT OF IRRIDIANCE ON PHOTOSYNTHETIC CAPACITY, HEAT DISSIPATION, AND ANTIOXIDANTS OF SEEDLINGS OF TWO TROPICAL RAIN FOREST TREE SPECIES 光照对两种热带雨林树种幼苗光合能力、热耗散和抗氧化系统的影响
- 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。
- The limpid streams, quiet valleys rare tree species and dense vegetation here, all contribute to its primeval beauty. 典型的石英岩山体成就了独特旖旎的自然风光,清澈的溪流宁静的山谷。
- Light energy utilization and dissipation in seedlings of three tropical rain forest tree species with different ecological habits 不同生态习性热带雨林树种的幼苗对光能的利用与耗散
- Response of photosynthesis and antioxygenic enzymes in seedlings of three tropical forest tree species to different light environments 热带雨林不同生态习性树种幼苗光合作用和抗氧化酶对生长光环境的反应
- Preliminary Report on the Introduction Effectiveness of 4 Economic Forest Tree Species in Karst Mountain Area of Southeast Yunnan 滇东南岩溶山区4种经济林树种的引种成效初报
- Even plans for the 2010 Winter Olympics in Vancouver risk causing environmental damage to rare forests in the nearby Eagle Ridge Bluffs. 甚至对2010年温哥华冬季奥运会可能对附近的鹰岭尔布拉夫斯稀有森林产生的环境污染作出计划。
- Choice of Forestation Tree Species in Alkali-saline Land in River Beach 鄂尔多斯河滩盐碱地造林树种的选择
- 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。