共查询到15条相似文献,搜索用时 62 毫秒
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报道了甘肃省杜鹃花科一新记录——长蕊杜鹃,描述其生长的自然环境,为保护及利用该物种提供了依据. 相似文献
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目的:了解香茶菜(Isodon amethystoides)、大萼香茶菜(I.macrocalyx)、显脉香茶菜(I.nervosa)小坚果表面超微结构的形态差异.方法:利用扫描电子显微镜对香茶菜、大萼香茶菜、显脉香茶菜果实表面超微结构进行观察.结果:香茶菜属3种植物果实表面都具有由四个细胞组成的腺鳞,但3种植物果实表面都有各自独特的细微构造.显脉香茶菜和香茶菜果实表面具有非腺毛,大萼香茶菜果实表面则没有.显脉香茶菜果实表面非腺毛的数量明显多于香茶菜果实,两者非腺毛的形态又存在着差异.结论:香茶菜、大萼香茶菜、显脉香茶菜果实的微形态存在明显差异,这些果实表面微观形态的差异可为品种鉴定提供依据. 相似文献
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旨在描述采集于云南省文山壮族苗族自治州丘北县树皮乡小新寨村龙山脚下一喀斯特洞穴出水口的金线鲃属鱼类一新种。新种以采集标本的地名命名为龙山金线鲃(Sinocyclocheilus longshanensis Li et Wu sp. nov.)。经形态学鉴定,该新种背鳍具有7根分枝鳍条,末根不分枝鳍条后缘呈锯齿状;眼正常;口亚上位;背部隆起;体侧分布有不规则黑褐色圆斑;侧线孔59~62。新种与背部隆起,体侧分布有不规则黑褐色圆斑,口端位、侧线孔81~88的麻花金线鲃(Sinocyclocheilus maculatus)能明显区分;与口亚上位,背部无明显隆起,通体金黄色,侧线鳞71~81的阳宗金线鲃(Sinocyclocheilus yangzongensis)亦能明显区分。根据以上形态学特征组合,亦可将该新种与金线鲃属其他种明显区别。 相似文献
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《Journal of Landscape Research》2013,(3)
Switzerland is one of the best tourism destinations in the world. Its development experience is valuable for Hebei, whose competitiveness is weak comparatively in spite of rich tourism resources. Specifically, the successful experiences of tourism development in Switzerland include environmental protection, cultural heritance, exhibition marketing, investment, brand management, hotel management, and so on. On this basis, four suggestions are recommended to upgrade tourism in Hebei Province based on its actual situations, namely regulating tourism market, pushing tourism education, attracting investments, and building tourism brand. 相似文献
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为探索喷施叶面肥及植物生长调节剂对桔梗种子质量的影响,叶面肥喷施采用两因素完全随机设计试验,尿素喷施浓度为0.5%、1.0%、1.5%,磷酸二氢钾浓度为1%、2%、3%.植物生长调节剂处理采用单因素完全随机设计试验,GA3浓度50,100,150 mg/L,6-BA浓度0.5,1.0,1.5 mg/L,2,4-D浓度10,30,50 mg/L.结果表明,1.0%尿素+3.0%磷酸二氢钾处理为最佳浓度配比,其千粒重较高为(1.323 2 g)、发芽率、生活力达到了最高,分别为81.33%、91%,含水量最低为7.26%;GA3的最佳喷施浓度为100 mg/L,6-BA为1.5 mg/L,2,4-D为50 mg/L.因此,在桔梗开花期喷施1.0%尿素+3.0%磷酸二氢钾或喷施一定浓度的植物生长调节剂能有效提高桔梗种子质量. 相似文献
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《Journal of Landscape Research》2013,(9)
Great barrier reef in Australia was taken for example to analyze its experience in management,protection,marketing,infrastructure,derivative design,and brand building.On this basis,concrete suggestions were given for eco-tourism development in Hebei Province based on its actual situation:enhancing environmental law enforcement and ecological management,strengthening advertisement and promotion,innovating tourism operation and management,and caring tourists. 相似文献
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《Journal of Landscape Research》2013,(3)
Yellowstone National Park is one of the most successful tourism destinations in the world, its development experience in terms of cultural tourism are valuable for Hebei, whose competitiveness is weak comparatively in spite of rich tourism resources. Specifically, the successful experience of Yellowstone National Park in tourism development embodies 8 aspects: planning, infrastructure construction, ticket strategy, management mechanism, investment management, environmental management, identification system design, and tourism products. On this basis, 5 suggestions are recommended to upgrade tourism in Hebei Province based on its actual situation, namely appropriate proportions of ticket and revenue, scientific management, environmental protection and education, scientific planning, and resource classification. 相似文献