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文章介绍了上海市金山区近年来采用的园林树枝循环利用技术、立体绿化建设、植物配置优化、拓展绿化用水来源,以及生态型铺装建设等节约型绿化措施,以期为有效推进节约型园林建设技术发展与应用提供借鉴。
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在对银川市内30条主次干道的道路绿化进行调查的基础上,对植物种类、道路绿化形式、景观格局、垂直结构等进行分析,针对银川市街道园林景观现状,掌握道路景观的构成以及城市道路绿地植物的选择。结果表明,目前银川市道路绿地虽然有一定的景观效果,但是在植物种类、断面形式、树种搭配上仍有一定不足,种类不够丰富,植物养护缺乏管理,有待改善。 相似文献
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秦岭西段小陇山林区珍稀濒危树种资源及保护 总被引:12,自引:1,他引:12
位于秦岭西段的小陇山林区有丰富的植物资源,有国家保护植物数十种,经过调查,基本摸清了珍稀濒危树种在本林区的分布情况,并对一些濒危树种进行繁育,扩大分布范围,同时提出了保护繁育对策。 相似文献
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Cui Xudong Su Xiaohua Zhang Bingyu Chu Yanguang Huang Qinjun Zhang Weixi Liu Boyang 《中国林业科技(英文版)》2012,(3):54-55
Compared with the species of Leuce section,the difficulty in plant regeneration during tissue culture for the species of Aigeiros section is a key limiting factor for their application in genetic engineering of forest trees.In this study,the plant growth regulators combination,copper concentration,light intensity,and the selection pressures of kanamycin were investigated using leaves of Populus×euramericana cl.’Bofeng’ as explants,and a stable and high efficient regeneration system was established.Using this system,both the shoot regeneration rate and rooting rate were up to 100%,and the average number of differentiated shoots in each leaf explant was up to 20,and the survival rate of seedlings reached 98%.The optimal selection pressure of kanamycin in shoot inducement for leaf-explant was 40 mg·L-1,and the optimal selection pressure of kanamycin in root inducement of adventitious bud was 20 mg·L-1.The authors also found that differentiation rate of adventitious buds of P.×euramericana cl.’Bofeng’ could be significantly promoted by increased copper concentration,and this is the first report about the key role of copper(Cu) in explant regeneration of Poplars.This regeneration system with high frequency which was established by the authors was as good as that of species of Leuce section,and it provides a good technological platform for genetic engineering of forest tree which uses the species of Aigeiros section as model materials. 相似文献
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与白杨派树种相比,黑杨派树种一直因组培再生困难而限制了其在林木基因工程研究中的应用。本文以欧美杨优良新品种——渤丰1号为试验材料,以其再生培养基中的植物生长调节剂配比、铜离子浓度、光照强度、卡那霉素选择压等方面为切入点开展研究,建立了渤丰1号杨高效组培再生体系。使用该再生体系时,外植体的分化率和生根率均达100%,叶片的平均分化芽数多达20个以上,组培苗移植成活率可达98%,40 mg·L-1卡那霉素可以抑制渤丰1号杨叶片的诱导与分化,20 mg·L-1卡那霉素可以抑制渤丰1号杨不定芽的生根;同时发现铜(Cu)元素是渤丰1号杨外植体分化再生的一个关键因素,增加Cu2+浓度能显著促进不定芽的诱导和分化。 相似文献
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用野生狗牙根草绿化湖南高速公路石方边坡的试验研究 总被引:4,自引:0,他引:4
开发利用野生植物资源绿化高速公路边坡,具有广阔的市场前景.野生狗牙根草具有生长快、抗性强的特点,采取挂网式等技术措施,对湖南潭邵高速公路的部分石方边坡用野生狗牙根草进行绿化试验,结果表明,与传统的石方边坡客土喷播草种方法相比,不但成本低,而且坡面覆盖快,水土保持和绿化效果好. 相似文献
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