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关于退耕还林后续产业培植模式的思考 总被引:1,自引:0,他引:1
退耕还林是生态建设的重点工程,是改善生态环境的关键措施.也是优化农村经济结构,促进地方经济发展的增加农民收入的重点举措。安塞县退耕还林工程从1999年开始实施, 相似文献
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近几年我县经济保持了快速发展,但在充分看到总体成绩的同时,对当前存在的问题仍不可低估,如经济结构大体趋同,支柱产业选择上雷同还十分突出,低水平重复建设还没有得到很好地控制,相当一部分企业经营比较困难,经济效益不好。因此,必须从全面深化体制改革入手,从思想上摆脱狭隘的小生产意识的约束,改变计划经济体制下的经济结构,改变传统的单纯依靠外延扩张经济的老做法,以市场为导向,走集约经营的新路子,发展规模经济, 相似文献
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培植牛黄傅立叶变换红外光谱研究 总被引:1,自引:1,他引:0
用傅立叶变换红外光谱研究了6种不同产地的培植牛黄,结果表明,培植牛黄的主要成分是胆红素钙,培植牛黄较天然牛黄含有较多的蛋白和胆酸类物质。 相似文献
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A new mechanism of invader success: Exotic plant inhibits natural vegetation restoration by changing soil microbe community 总被引:12,自引:0,他引:12
YUXingjun YUDan LUZhijun MAKeping 《科学通报(英文版)》2005,50(11):1105-1112
Since the 1950s of the last century, the exotic plant, Eupatorium adenophorum, has spread rapidly across southwest China, damaging native ecosystems and causing great economic losses. We examined the pH, N, P, K, and organic matter concentrations, and the bacterial community character (by Biolog EcoPlateTM) in soils from sites heavily and lightly invaded by this exotic species. Also, soil from the lightly invaded site was treated with a water extract of E.adenophorum roots to examine the effect of the plant on soil properties. We grew three plant species, one native and two exotic, in pot experiment using soil from heavily invaded site to examine the effects of the soil on these plants growth. The soil analysis demonstrated that the pH, organic matter, total N, total P and total K in soils from the heavily invaded site were only slightly different from those of the lightly invaded site, but concentrations of NH4^ , NO3^- and available P and K in the heavily invaded site were greater than those in the lightly invaded site. The catabolic activity of soil bacterial community in the heavily invaded site was different from that in the lightly invaded site. The catabolic activity of bacterial community in soils treated by the water extract of E.adenophorum roots changed and became similar to that in soils from the heavily invaded site. The pot experiment showed that the exotic plants growth in heavily invaded soil were not different from in lightly invaded soil; however, the native plant biomass decreased dramatically when grown in soil from the heavily invaded site as compared to soil from the lightly invaded site; and the same phenomenon was found when any potential allelopathic effects by E. adenophorum were eliminated by added activated carbon to those soils. Difference in soil nutrient availability and allelopathy could not explain this phenomenon of the native plant in the soils from the heavily and lightly invaded sites. Changes observed in the soil bacterial community were obviously related to native plant growth in those tow soils. Those results suggest that changing soil microbial community may be an important part of E. adenophorum invasion process. Since the soil microbial community serves as bridge in connection of exotic and natural plants, the exotic plant could inhibit the natural plant growth and reproduction by changing the soil microbial community in invaded site. 相似文献
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林培晓 《重庆三峡学院学报》2015,(4)
法律信仰既是公民的主观行为,也是一个客观行为,它对社会经济的发展起着重要的支撑作用。但就我国当前的现实而言,公民的法律信仰缺失严重,造成这一现象的原因有很多,比如立法数量过多过快、执法不严、司法不公、法律意识淡薄等。为此,文章从国外研究成果以及国外较为成熟的法律信仰培植经验出发,结合我国现实提出了培植我国公民法律信仰的路径。 相似文献
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孙庆彬 《玉林师范学院学报》2010,31(2):113-115
运用文献资料法和专家访谈法,首先阐释人文素养等概念的内涵,在此基础上揭示体育人文素养的内涵,最后提出高校体育教育专业学生的体育人文素养培植的对策,试图对体育教育专业教学有所裨益. 相似文献
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