安徽胡枝子属植物的开发利用

通过野外调查和文献资料研究表明,安徽境内胡枝子属植物共有13种2亚种。分析了安徽胡枝子属植物的分布及经济价值:大多数为药用植物;有些是优质牧草和早秋重要的蜜源植物;部分种类可作为重要的园林景观植物。此外,胡枝子属植物具有较强的抗旱、耐贫瘠、耐酸、碱、盐、重金属的能力,可以开发作为污染环境的修复植物。还对安徽胡枝子属植物的开发利用现状和前景做了讨论,旨在为安徽胡枝子属的合理开发利用提供参考依据。     

对黑龙江省栎林种类和生态习性的探讨

黑龙江省的栎林种类主要有蒙古栎林、辽东栎林、槲栎林、栓皮栎林和槲树。其中,蒙古栎林又包括杜鹃蒙古栎林、胡枝子蒙古栎林和榛子蒙古栎林。它们的分布情况、群落结构、生态习性等各有特点。     

浅析河北省胡枝子的开发利用

该文分析了河北省胡枝子产业的现状,指出了在发展胡枝子产业中存在的问题,针对这些问题提出了几点有利于胡枝子发展的措施。     

胡枝子的生物学特性及利用

美丽胡枝子又称胡枝条，豆科蝶形花亚科胡枝子属的落叶灌木，在甘肃省小陇山林区普遍分布，主要在山坡、林下或林缘成群生长。近年来，由于城市园林绿化发展迅速，美丽胡枝子吸引了众多绿化单位和绿化者的眼球，观赏、药用及其他价值得到人们的重视。该植株具有适应性强、栽植成本低、修剪方法简单、耐粗放管理等特点，必将成为城市园林绿化产业开发中首选树种之一。     

胡枝子属种子萌发特性试验

以8个种子样品(种、种源)的胡枝子种子进行热水处理、浓硫酸酸蚀处理,探索破除种子硬实促进萌发的适合方法。结果表明:胡枝子种子千粒质量越小则硬实率越高,浓硫酸酸蚀处理较热水浸泡处理能显著提高胡枝子种子发芽率与发芽整齐度。应根据种子大小确定种子酸蚀处理时间,分别为小粒种子(截叶胡枝子)适合处理时间为10 min以下、中粒种子(中华胡枝子、达乌里胡枝子、多花胡枝子)为10～15 min、大粒种子(二色胡枝子、美丽胡枝子)15～20 min。     

胡枝子栽培技术及造林成效研究

一、前言胡枝子,又名胡枝条、杨条、杏条,武夷山市农民叫“马扫”。胡枝子全国约有20种,我省有9种,多为野生,人工栽培极少。本市目前发现的多数为胡枝子(Lespcdozabieorturcz)和“美丽的胡枝子(LespedezaFormosa(Voy)Koehne)”,少数为“白花胡枝子(Lespedezadaridii Franch)”3个种类,我市公路沿线等少数农民有用胡枝子作绿肥、保持水土、     

胡枝子林的营造技术

分析了胡枝子林的生物学特性,提出营造胡枝子林的技术方法。     

胡枝子应用价值及丰产栽培技术研究进展

胡枝子是一种起源于东亚的多年生豆科植物．耐旱、耐酸、耐瘠薄、生物量大、营养价值高．是优良的饲用灌木树种。本文介绍了胡枝子的生物生态学特性和抗性强的特点．综述了胡枝子在水土保持、改良土壤及作为饲料添加剂等方面的应用价值．总结了国内外对胡枝子在优良品种选育、发芽和种植等栽培技术方面的研究成果。最后．建议对胡枝子的刈割技术做进一步的研究．并总结出一套饲用型胡枝子优质丰产栽培技术。     

胡枝子林的营造技术

分析了胡枝子林的生物学特性,提出营造胡枝子林的技术方法。     

胡枝子的利用与栽培

胡枝子(Lespedeza bicolor Turcz)为豆科,胡枝子属。也称笤条、横子、雪拉等。分布于东北、内蒙古、山西、山东、河南、湖北及陕西等省区;日本、朝鲜和苏联也有分布。此属,我国约有65种,东北约有7种。     

胡枝子种-种源苗期生长和抗寒性分析

胡枝子是优良的畜牧饲料树种,又是防风固沙的重要树种。从美国和国内河南、河北等地引进的胡枝子种子,在辽宁的铁岭和阜新章古台地区进行了种-种源苗期试验。方差分析表明,不同种源间生长量和生物量存在显著差异。铁岭试验点,5#、13#、1#和3#种源,苗高遗传力为36.3%,遗传增益为10.8%;地径相应为80.0%和27.3%。章古台试验点,7#种源,苗高遗传力为26.7%,遗传增益为12.3%,但由于树干受冻害严重,尚待观察。2个地点综合分析检验结果,5#、3#1、3#属优良种源。同时,对选择的种源进行了生长节律分析,直接引种这些优良种源造林可获得显著的增产效益。美国短梗胡枝子是在辽宁有发展前途的优良树种,美国二色胡枝子虽然在章古台生长优良,但冻干害严重,而美国美丽胡枝子在辽宁生长不佳。     

Structure, composition and enzymatic hydrolysis of steam-exploded lespedeza stalks

Pretreatment of lespedeza stalks by steam explosion has been studied. The results indicate that steam-exploded pretreatment has strong effects on physical features, morphology, crystallinity, and composition of lespedeza stalks as shown by scanning electron microscopy (SEM), infrared (IR), and X-ray diffraction spectrometry methods. After steam explosion, the cellulose and lignin contents of lespedeza stalks varied only slightly, but the hemicellulose content had decreased from 29.34% to 7.48%. The cellulose obtained by steam-exploded pretreatment had a higher degree of crystallinity than that of the raw material. At the explosion condition of 2.25 MPa and 4 min, lignocellulose is easier to hydrolyze by enzyme than the original lignocellulose. The concentration of reduced sugar in the hydrolyzate liquid increased from 71.77 to 162.84 g·L–1.     

Simultaneous saccharification and fermentation of steam-pretreated lespedeza stalks for the production of ethanol

1 Introduction Ethanol is now recognized as a potential alternative to petroleum-derived vehicle fuels, and offers environ- mental advantages. The combustion of biofuels does not result in a net contribution of CO2 to the atmos- phere, so they do not contribute to the greenhouse ef- fect. Lignocellulosic material is the most abundant renewable resource available for the production of fuel ethanol. The cellulose and hemicellulose fractions of lignocellulosic material can be hydrolyzed to sugar…     

云南野生食用菌产业的发展前景及相关举措

云南省野生食用菌种类多,资源丰富,近年来野生食用菌产业发展较快。在简要介绍云南省野生食用菌产业现状之后,从市场需求、资源状况、产品价格等方面阐述了该产业在云南发展的有利条件,并分析了云南在野生食用菌产业发展中存在的问题,据此提出了相关的发展建议。     

Nutritive quality and morphological development under partial shade of some forage species with agroforestry potential

The shade environment produced in agroforestry practices affects the morphology, anatomy and chemical composition of intercropped forages and, therefore, may affect forage quality. During the summer-fall growing season of 1994 and 1995, 30 forage cultivars were grown in 7.6 L (two gallon) pots in full sun, 50%, and 80% shade created by placing shade cloth over a greenhouse frame. Fifteen legumes and grasses that were similar in yield under full sun and shade treatments were selected for quality analysis. With the exception of 'Kobe' lespedeza, D. paniculatum and D. canescens, acid detergent fiber (ADF) was either not affected or was slightly increased by shade. Except for Kobe lespedeza and 'Martin' tall fescue, shade either did not affect or slightly increased the neutral detergent fiber (NDF) of the shade-tolerant forages. Crude protein (CP) percentage increased in most shade-grown forages; however, shade had less effect on CP of legumes than of grasses. Other than Kobe lespedeza, total mass of CP per pot (TCP) was unaffected or increased under 50% shade for all species. Total crude protein of hog peanut, D. esmodium paniculatum and D. canescens was greater under both 50% shade and 80% shade than in full sun. The decrease in ADF of Kobe lespedeza, D. paniculatum and D. canescens under the shade treatments might be associated with maintenance of a higher leaf:stem weight ratio under shade. However, the leaf:stem ratios of the same cultivars grown at different light intensities did not strongly correlate with NDF, CP, and TCP values. In general, on selected species, internodal length and leaf area increased while specific leaf dry weight decreased for plants grown in shade compared to those grown in full sun. The data indicated that forage quality of some species could be enhanced by shade. This revised version was published online in June 2006 with corrections to the Cover Date.     

柳河罗通山自然保护区植物多样性调查与分析

通过对吉林柳河罗通山自然保护区植物种类的调查与分析,结果表明:区域内有蕨类植物14科24种,裸子植物2科6种,被子植物82科399种,占吉林省植物种类的18.1%;分属4个植被类型、19个植物群系。区域内有吉林省新记录种1种,少见种2种;国家Ⅰ级重点保护野生植物1种,国家Ⅱ级重点保护野生植物6种。     

福建省国家重点保护野生植物的分布与保护对策

论述福建省国家重点保护野生植物的分布情况与保护对策,分析其现状,阐析其保存价值与意义,使人们加深对重点保护野生植物的认识,唤起人们的保护意识,并就加强国家重点保护野生植物资源的保护工作提出保护对策,促进生态省的建设。     

浅谈湖北省野生花卉资源的保护及开发利用

本文分析了湖北省野生花卉资源的特点、保护及开发利用现状、存在的问题 ,初步筛选出本区具有较大开发价值的野生花卉 78属 1 1 0种 ,并对如何保护和开发利用湖北的野生花卉资源提出了建议。     

山东野生果树种质资源及开发利用

山东省野生果树种质资源丰富，全省有野生果树10个科、21个属，43个种和6个变种。全省不同区域分布着不同的野生果树类型。针对现有资源及开发利用现状，提出了科学开发利用山东野生果树资源的措施。     

贵州野生木本观赏植物研究

对贵州省的木本观赏植物进行了种类、观赏性状、特性分类、分布状况等的研究。其结果表明,贵州有木本观赏植物110科285属588种,分别占贵州省木本植物科属种的84.6%、48.8%和23.3%。按性状分为10类;按观赏特性分为6类。从分布看,全省80个县(市)都有木本观赏植物分布,大多数种出现的海拔高度为600~1 500m。首次系统地提出了贵州野生木本观赏植物的种类。