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- forest tree propagation 林木繁殖
- 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。
- Tree propagate themselves by seed. 树木藉着种子繁殖。
- 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。
- 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。
- The trees propagate themselves by cuttings. 那些树以插枝来繁殖。
- 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。
- The term "seed" in this Law means the materials of crops and forest trees used for planting or propagation, including seed grains, fruits, roots, stems, seedlings, buds, leaves, etc. 本法所称种子,是指农作物和林木的种植材料或者繁殖材料,包括籽粒、果实和根、茎、苗、芽、叶等。
- 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。
- Trees propagate themselves by seeds. 树靠种子繁衍。
- 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。
- Some trees propagate themselves by seeds. 有些树靠种子繁衍.
- 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。
- 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。
- It is also found that there are three basic treeing propagation phases, which are initiation, stagnation,and rapid developing phases, presented in electrical tree developing process. 并且在电树枝发展过程会呈现非常清晰的三个基本阶段,即引发阶段、滞长阶段和迅速发展阶段。
- 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。
- 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。