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- Early Selection in Forest Tree Improvement 林木育种中的早期选择
- The Effect on Physics and Chemistry of Forest Soil After the Forest Tree Improvement in XiQiao Mountain 西樵山森林改造对林地土壤理化性质的影响
- forest tree improvement 林木改良
- 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。
- Genetic Variation and Tree Improvement of the Genus, Paulownia Sieb.et Zucc. 泡桐遗传变异与改良研究
- 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。
- Chapters 2-5 are devoted to the basic concepts of Mendelian and population genetics which are of greatest concern in tree improvement. 第二到第五章介绍对于改良树木有密切关系的门德尔和群体遗传学的基本概念。
- 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。
- 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。
- 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。
- Betty thinks that trees improve the air. 贝蒂认为树能够改善空气。
- 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。
- 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。
- 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。
- 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。
- 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。
