1) indexes of tree structure
树相
1.
Studies on the indexes of tree structure and its regulating in young precocious walnut;
早实核桃幼树树相指标及其调控的研究
2) Acacia
[英][ə'keɪʃə] [美][ə'keʃə]
相思树
1.
Study on wood pulping performances of four introduced Acacia species in southern Fujian;
闽南引种4个相思树种木材制浆性能的研究
2.
The Comparative Experiment on Afforestation of Three Acacia Species;
三个相思树种的造林对比试验
3.
Control of Hemiberlesia pitysophila by interlogging and replanting acacia in longitudinal stripes in pine forests;
纵带间伐套种相思树控制松突圆蚧的研究
3) resin phase
树脂相
1.
In the medium of HCl,rare earth forms binary complex with arsenazo DCS which can be absorbed by the strong basic anion resin,and this resin phase can be used directly for the determination of the trace rare earth in herbage.
用离子交换树脂相光度法直接测定牧草中微量稀土 ,把形成的 DCS-偶氮胂 -稀土络合物富集在强碱性的阴离子交换树脂上 ,显色与浓集同时进行 ,无需预浓缩或分离 ,简化了分析步骤 ,同时灵敏度和选择性也均优于溶液光度法。
2.
A new anaytical method for direct resin phase spectrophotometric deternination of trace bismuth has been developed.
本文研究了利用树脂相通过光度法测定痕量铋的新方法 。
3.
A new anaytical method for direct thin layer resin phase spctro photometry determination of trace iron has been developed.
本文研究了利用薄层树脂相通过光度法测定痕量铁的新方法。
4) resin-phase
树脂相
1.
This paper introduces exchange of complex negative ion (Co(SCN)2-4 formedby sulphuric-cyanate with (Co2+)and strong base negative ion resin at surface activator,Tween-80,colored complex being riching in resin-phase in order to analyze trace Co2+ λmaxis 630 nm, the mola absorption coefficient e is 1.
介绍了硫氰酸根和钴(Ⅱ)在有表面活性剂Tween—80存在下生成络阴离子,与强碱性阴离子交换树脂进行交换,有色络合物富集显色于树脂相上,可进行树脂相分光光度测定。
5) Acacia
[英][ə'keɪʃə] [美][ə'keʃə]
相思树种
1.
Study on Water Holding Capacity of above-ground part in Six Acacia Species of Coastal Protection Forest;
沿海防护林6个相思树种地上部分持水量研究
2.
A Study on Some Tolerance to Stresses of Acacia Rhizobium;
相思树种根瘤菌的若干抗逆特性
6) Acacia tree species
相思树种
1.
Through the analysis of the effect of Casuarina equisetifolia protection forest regeneratd by Acacia tree species on chemical properties of soil,the results showed that compared with stand of Casuarina equisetifolia the water-soluble Cl~-and Na~+ in sandy land were reduced by using Acacia tree species,the content of the water-soluble Ca~(2+)in topsoil was increased.
通过对相思树种更新木麻黄防护林对沿海沙地土壤化学性质的分析,结果表明:与木麻黄林分相比,在沿海沙地后沿应用相思树种造林使沙地土壤中水溶性C l-和Na+含量降低,而使表层土壤中的水溶性Ca2+含量升高;相思树种能明显地改善沙地土壤中有效养分的供给,然而,对不同的相思树种来说,其改善程度有所差异;相思树种明显地增加了沿海沙地土壤中全氮和全碳的含量,且增加的量以沙地土壤的表层最为显著。
2.
Being short of coastal sandy land forestation species, bad system stability, faint resistance, seriousplant diseases, we proposed to cultivate Acacia tree species which had extensive adaptability and strongresistance to typhoon and arid site.
针对沿海沙地上造林树种缺乏,原有木麻黄防护林树种单一、系统稳定性差、抗逆性弱、病虫害时常发生的实际情况,提出栽培适应性广、抗大风、台风和抗干旱的相思树种并应用于海岸带防护林体系的建设中,对丰富沿海沙地上的造林树种资源,解决因木麻黄连栽造成的生产力下降和地力衰退,改善防护林的树种结构及林分空间结构,提高防护林的抗逆性和防护效能具有重要意义。
补充资料:海南龙血树(小花龙血树)
百合科Liliaceae
乔木状,高3-4m。叶聚生于茎和枝顶,几呈套叠状,长约70cm,抱茎,无柄。圆锥花序长约30cm,花序轴无毛或近无毛。分布于海南西南部,生于背风区的干燥砂土上。越南、柬埔寨也有分布。国家三级保护濒危种。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条