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天然右旋龙脑的加工工艺 总被引:3,自引:2,他引:1
天然右旋龙脑的加工工艺罗忠生,李牛贵(吉安地区林业科学研究所343011)天然右旋龙脑(d-Borneol),别名天然冰片、天然梅片、机片等。它是一种名贵中药材和辛香料。天然右旋龙脑取自一种樟科植物,此植物其枝叶富含右旋龙脑,经蒸馏其鲜枝叶可得右旋龙... 相似文献
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2011年10月26日,历时一年的湖南省新晃县龙脑开发有限责任公司(下称新晃龙脑公司)起诉被告杨国峰侵犯龙脑樟L-1植物新品种权案终于划上句号,至此湖南首例侵犯植物新品种权纠纷案审理终结,新晃龙脑公司胜诉,获得经济损失赔偿30万元。 相似文献
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龙脑樟资源利用研究现状与发展趋势 总被引:1,自引:0,他引:1
天然冰片(右旋龙脑)是一种名贵中药材和高级香料,因其珍贵和稀少又称为"龙脑"。龙脑樟叶片精油中富含右旋龙脑,是目前最适合提取天然冰片的植物新资源。为了保护和合理开发利用这一宝贵资源,本文主要从龙脑樟资源开发、人工繁殖、矮林作业技术、挥发油成分分析、天然冰片的提取纯化及药用价值等方面进行了详细阐述,并提出了龙脑樟产业的发展方向及趋势。 相似文献
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天然冰片的新资源 总被引:5,自引:2,他引:5
天然冰片是一种名贵珍稀药材和高级香料.又称天然右旋龙脑、梅片。原产印尼的苏门答腊群岛,采用龙脑香科龙脑香树的树脂提取,我国历来依靠进口来满足需要。通过我国科技人员的不懈努力.在1980—1990年代.发现了3种樟科植物可提取天然冰片,①江西省吉安林科所从香樟Cinnamomum camphora的一种化学型——龙脑樟植物中提取的天然右旋龙脑;②湖南新晃县从油樟Cinnamomum longepaniculatum的一种化学型——龙脑型植物中提取的天然右旋龙脑;③中科院华南植物所从阴香Cinnamomum burmannii的一种化学型——梅片树中提取的天然右旋龙脑。现就天然冰片的3种新资源进行简单介绍。 相似文献
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ABT生根粉提高龙脑樟扦插育苗生根率 总被引:3,自引:0,他引:3
ABT生根粉提高龙脑樟扦插育苗生根率张永绵(江西省永丰县古桥林场)1988年6月我场与林业部科技司签订了《樟树优良类型繁育和栽培技术推广》合同,承担了樟树基地的造林施工任务。龙脑樟是樟树5个类型中经济价值最高的优良类型,但采种母树目前仅发现几棵,种子... 相似文献
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龙脑樟矮林作业技术和效益分析 总被引:6,自引:1,他引:5
龙脑樟是樟树中新发现的一个化学模型,是提取天然冰片的理想原料。简要介绍了龙脑樟的矮林作业技术,以及对不同立地条件、不同施肥量、不同采割时间和不同采割方式的龙脑樟矮林作业的经济效益作了对比分析。结果表明:在适生的立地条件下,龙脑樟矮林作业年产值达8.2万元/hm^2,利税达6.2万元/hm^2。 相似文献
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Simon A. Mng’omba Festus K. Akinnifesi Amber Kerr K. Salipira Alice Muchugi 《Agroforestry Systems》2017,91(2):249-258
Fertilizer trees, the nitrogen-fixing legumes, such as gliricidia (Gliricidia sepium) and tephrosia (Tephrosia spp.) have been used to improve soil fertility for higher crop yields in nitrogen deficient soils. Many studies have focused on how these fertilizer trees improve maize yield, but there has been a dearth of information on the effect of fertilizer tree species on cotton growth and yield. A study was undertaken for two cropping seasons (2012/13 and 2013/14) with the objective of assessing IRM 81 cotton growth and yield responses to tephrosia and/or gliricidia biomass with or without inorganic fertilizer application. Boll opening significantly varied (P < 0.0001) with treatments and early boll opening was observed in plots where only inorganic fertilizer was applied. Higher lint yield (mean of 1397 kg/ha) was obtained in the second cropping season than in the first cropping season (480 kg/ha) and the application of gliricidia biomass with fertilizer gave the highest lint yield (2121 kg/ha). The lowest lint and seed yields were obtained from plots where tephrosia biomass only was applied. It is concluded that the use of gliricidia biomass with inorganic fertilizer improved cotton yields. The high amount of gliricidia biomass (due to prolific coppicing) applied contributed to higher cotton lint yields with reduced rates of inorganic fertilizer application, making gliricidia-cotton intercropping a cost-effective option to smallholder farmers. 相似文献
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Integration of trees on farms may exert complementary or competitive effects on crop yield. This 4 year study examined novel
systems in which Alnus acuminata (alnus), Calliandra
calothyrsus (calliandra), Sesbania sesban (sesbania) or a mixture of all three were grown on the degraded upper part of bench terraces in Uganda; beans or maize were
grown on the more fertile lower terrace during the short and long rains. Three pruning treatments (shoot, root or shoot + root
pruning) were applied to the tree rows adjacent to the crops; shoot prunings were applied as green manure to the woodlot from
which they came. Pruning increased survival in calliandra and reduced survival in sesbania; alnus was unaffected. Pruning
reduced tree height and stem diameter in alnus, but did not affect calliandra or sesbania. Maize yield adjacent to unpruned
calliandra, alnus and sesbania or a mixture of all three was reduced by 48, 17, 6 and 24% relative to sole maize. Shoot pruning
initially sustained crop performance but shoot + root pruning became necessary when tree age exceeded 2 years; shoot + root
pruning increased maize yield by 88, 40, 11 and 31% in the calliandra, alnus, sesbania and tree mixture systems relative to
unpruned trees. Bean yield adjacent to unpruned calliandra, alnus, sesbania and the tree mixture was 44, 31, 33 and 22% lower
than in sole crops and pruning had no significant effect on crop yield. The results suggest that sesbania fallows may be used
on the upper terrace without reducing crop yield on the lower terrace, whereas pruning of alnus is needed to sustain yield.
Calliandra woodlots appear to be unsuitable as crop yield was reduced even after pruning. 相似文献
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不同氮、钾肥水平对红富士苹果产量和品质的影响 总被引:1,自引:0,他引:1
以红富士苹果为对象,施入不同水平的氮、钾肥,观察其对产量及其品质的影响,结果表明:在单独施用氮肥的处理中,果实单株平均产量明显高于对照,以施用氮肥1.0 kg/株处理的产量最高,为86.9 kg/株;在单独施用钾肥的处理中,果实单株产量变化不明显,变动在77.3~79.2 kg/株之间;在氮、钾肥混合处理中,果实单株平均产量显著高于对照,以施用氮肥1.0 kg/株+钾肥1.0 kg/株处理的产量最高,为98.6 kg/株。在果实硬度方面,以施用氮肥1.0 kg/株+钾肥1.0 kg/株处理的硬度最大,为7.21 kg·cm-2;在总糖方面,以施用氮肥1.5 kg/株+钾肥1.5kg/株处理的糖含量最大,为12.56%。 相似文献
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绿竹的立竹密度结构试验 总被引:5,自引:0,他引:5
应用随机区组试验方法在立地条件及经营措施基本相同的情况下对绿竹 (绿高脚品种 ) 4种密度结构测定其产量 ,其结果是以 30 0 0株·hm-2 的产量显著高于其它密度结构的产量 ,说明绿高脚密度结构应以 5 0 0丛·hm-2 ,每丛保持 6株 (年留笋养竹 3株 )最为适宜 相似文献
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松节油水合萜二醇合成对(艹孟)烷二胺反应的研究 总被引:2,自引:0,他引:2
探索研究了由水合萜二醇制备对(艹孟)烷二胺(MDA)的全新合成路线.使用叠氮化钠将水和萜二醇转化成为二叠氮基对(艹孟)烷(平均得率73.1%),再通过林德拉(Lindlar)催化剂使其催化加氢还原,成功制备了对划出界(艹孟)烷二胺(平均得率86.3%),反应总得率为63.1%.合成对(艹孟)烷二胺产品经过分离和提纯后通过物理性能、气相色谱组成、GC-MS、IR、1H NMR等分析测试,鉴定了化学结构.在此基础上,对(艹孟)烷二胺产品作为环氧树脂固化剂进行了应用试验,其试验结果表明,该合成产品与市售对蓋烷-1,8-二胺产品性能相当.研究结果表明,该合成路线是有效可行的. 相似文献
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