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Through different years management, the bamboo forest land soil chemistry nature shows different characteristic .Along with management years increase, soil's pH value go down ; The soil's OM, TN and the hydrolyte N all drops; The soil total P and the available K drops at first ,then go up.

4不同经营年限毛竹林地土壤化学性质变化特点:随着经营年限的增加,土壤pH值变化表现为下降趋势;土壤有机质、全氮和水解氮变化总体下降;土壤全磷和速效钾表现为先下降后上升趋势。

The lignification of bamboo stem were studied by means of light microscope and Transmission electron microscope coupled with histochemical and cytochemical methods.

应用光学显微镜和透射电子显微镜,并结合组织化学和细胞化学方法,研究了毛竹茎各组织中细胞壁的木质化过程、木质素异质性、酚酸类成分的分布、木质素在细胞壁中的沉积方式以及过氧化物酶的组织、细胞化学定位等。

Furthermore,by means of visible-light microspectrophotometry accompanying with histochemistry staining technique,the lignification progress and distribution characteristics in micro-morphological regions were systemically observed during bamboo cells differentiation process.

在竹材发育过程中细胞壁力学性能及其与结构相互关系的研究中,通过纳米压痕技术获得了毛竹纤维细胞的纵向弹性模量和硬度性能指标,并分析了MFA、CrI、细胞壁木质素含量和分布以及细胞壁超微结构对细胞壁力学性能的影响。

The protoxylem vessels initiated lignification in the early stage of vascular bundle differentiation, whereas metaxylem vessels and fiber walls started lignification from the middle lamella and cell comers after completion of vascular bundle differentiation. The walls of most parenchyma cells lignified after the stem reached its full height, while a few parenchyma cells remained non-lignified even the culm is 7 years old.

研究结果表明:毛竹茎的原生木质部导管在维管束发育早期就已木质化;后生木质部导管和纤维细胞在维管束分化完成后,自胞间层和细胞角隅处开始木质化;基本薄壁组织细胞木质化的发生较晚,通常在茎的节间完成伸长生长后才开始,但也有少数薄壁组织细胞始终保持非木质化的薄壁状态。

The study indicated that the change of the strain of tangential bamboo appears mainly parabolic curve form, and the strain increase gradually from outside face to inside face in the thickness direction of bamboo wall in process of heating.

对四年生毛竹的弦向和径向热应变特性进行了检测和研究,研究表明在加热过程中弦向竹材的应变大体呈抛物线状变化,在竹壁厚度方向由竹青至竹黄应变呈逐渐增加趋势。

The effects of heating rate and temperature on the pyrolysis behaviors of EMAL are investigated.

探讨了升温速率和热解温度对毛竹EMAL热失重行为的影响。

Stumpage volume of 400,000 cubic meters or more, bamboo annual production of 2 million more, is the town of Qujiang District, one of the major forest areas.

活立木蓄积量40万立方米以上,毛竹年产量达200万根以上,是曲江区的主要林区镇之一。

Effects of different concentrations of NaCl on the physiological mechanism of yearling seedlings of Phyllostachys pubescens was studied by measuring some physiological parameters.

以1a实生毛竹苗为材料,通过测定在不同浓度NaCl胁迫条件下的各项生理指标,研究了NaCl胁迫对其生理机制的影响。

The results indicated:(1)The Phyllostachys edulis could be distinctly distinguished from two affined species in the same genus.

结果表明,( 1 )RAPD技术能将 7个毛竹的变型或栽培型与同属的两个近缘种明显区别开来。

Nine samples(seven cultivars or forms of Phyllostachys edulis and two affined species.)were tested with RAPD in order to assess their genetic relationship.

利用RAPD标记技术对毛竹种下的 7个变型或栽培型及其同属的 2个近缘种进行遗传关系的研究。

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