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- With comparison and cluster analysis methods,the relationship between mineral salt contents of host trees and Kerria lacca was studied. 结果表明,不同寄主植物之间和是否被紫胶蚧寄生的枝条之间,无机盐含量存在差异,14种枝条的无机盐含量分成4组。
- The result showed that A. glabripennis adults had memory effect in its host tree selection to a certain degree. 从总体结果看,光肩星天牛成虫在进行寄主选择时,对原寄主具有一定“记忆效应”。
- Components and relative ratio of volatiles from host tree in different physiological phases were compared, and relative semiochemicals were tested by EAG and in field also. 进而,比较了3种不同生理阶段红皮云杉树干挥发性物质的组成和含量,对相关物质进行了触角电位实验和野外生测。
- This paper focused on the nutrient and enzyme of phloem in different attacking stages host trees, Pinus armandi, in pine ecosystem of Qinling Mountains. 摘要对秦岭林区遭受华山松大小蠹危害不同阶段的被害华山松韧皮部内的营养物质含量和酶活性变化进行了测定。
- These tentacles help channel large amounts of water and nutrients back to the host tree, far more water than the tree would be able to trap with its roots alone. 这些触角帮助将大量的水分和营养物质传回寄宿的树木中,这些水分远远多于树木的根部独自吸收的水分。
- Three host trees of Chinese gall nut, i.e., Pistacia chinensis, Rhus chinensis, and R. punjabensis var. sinica, were studied for their tannin content with ultraviolet spectrophotometry. 本文采用紫外分光光度法分析研究了黄连木、盐肤木6个部位及红麸杨叶片的单宁含量。
- Some mycorrhizal fungi help their host tree in other ways too, secreting a tree hormone that causes the roots to grow new root tips, and a hormone that increases the longevity of these new roots. 有些菌根真菌也在其他方面帮助它们的宿主树,分泌一种能够促使树根长出新根尖的树木荷尔蒙,以及增加这些新根尖寿命的荷尔蒙。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- The host then passed around a box of cigars. 主人这时拿了一盒雪茄烟请大家抽。
- The huge trees were profiled against the night sky. 在夜空的映衬下显出大树的轮廓。
- A host of friend meet him at the railroad station. 一大群朋友在火车站迎接他。
- The host team won the game by a nose. 主队以微弱优势赢得比赛。
- The host tell a joke to his guest to break the ice. 主人为了打破僵局,给客人讲了个笑话。
- Tannin Content in Three Host Trees of Chinese Gall Nut 倍子树单宁含量的分析研究
- They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
- There are no trees or bushes to give shade. 没有树木或灌木丛可以遮荫。
- Elephants strip the leaves from trees. 大象剥去了树上的叶子。
- A host of friends met him at the railroad station. 一大群朋友在火车站迎接他。
- The overripe apples dropped down from the trees. 过熟的苹果从树上掉了下来。
- I cannot stand the TV host's plastic smile. 我不能忍受那个电视节目主持人不自然的笑容。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries