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草地合理利用是草地保护的主要途径.草地利用单元划分是小尺度认识草地资源的基础.在草地利用单元划分的基础上,根据不同的利用状况,确定草地健康等级是制定草地资源利用计划的基础性工作,可以为草地合理利用提供基础数据. 相似文献
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《畜牧兽医科技信息》2015,(7)
<正>农作物秸秆饲料转化利用是我省农作物秸秆利用的重要组成部分,已经成为我省草食家畜粗饲料的重要来源。1农作物秸秆饲料转化利用现状我省农牧民历来就有利用农作物秸秆饲养家畜的习惯。根据省发改委《关于我省秸秆资源利用现状及发展趋势情况的通报》(2013年12月),2012年农作物秸秆饲料转化利用占我省秸秆利用总量的44.5%,占我省秸秆可收集量的 相似文献
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范天威 《养殖与饲料.饲料世界》2022,(3)
养殖业在促进农民增收、保障畜禽产品供应等方面发挥着重要作用,但养殖粪污若利用不善,会造成很严重的环境污染。为了提高畜禽粪污资源化利用水平,本文从鸡粪利用、猪粪利用、牛粪利用、羊粪利用、鸭粪利用等方面介绍了兰陵县畜禽粪污利用的现状;指出了兰陵县粪污利用存在的问题:地方政府重视程度不够,养殖场责任意识不强,养殖场技术设备缺乏;提出了改进兰陵县粪污利用的措施:优化畜禽产业布局,推进畜禽养殖生产清洁化和产业模式生态化,加快构建种养结合、农牧循环的可持续发展新格局,开展大型规模养殖场可视化监测试点工作,支持鼓励大型规模养殖场自行处理粪污等。 相似文献
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以重庆市丰都县为代表研究三峡库区城镇土地集约利用影响因素并分析城镇土地集约利用趋势,为制定合理措施提高城镇土地集约利用水平提供科学依据。研究方法:主成分分析法,综合评价法。(1)丰都县城镇土地集约利用水平主要受经济投入——产出水平和土地闲置率等因素的影响,其中经济投入——产出水平是影响城镇土地集约利用的主要因素。(2)随着对土地集约利用的重视程度的提高,全县土地集约利用水平呈上升趋势。以丰都县为代表的三峡库区城镇土地集约利用水平主要受经济水平、人口密度和人均用地数量等因素的影响,该区城镇土地集约利用水平自1996年以来呈上升趋势,随着经济的持续发展,该地区城镇土地集约利用水平将持续上升。 相似文献
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随着土地集约利用水平的不断提高,以不同地类为基础进行集约利用中观评价已经成为土地集约利用评价的重要趋势。文中首先分析了工业用地的特点及其集约利用的影响因素,重点探讨了工业用地集约利用评价指标的选取、指标标准值和指标权重的确定以及评价方法,希望能为工业用地集约利用评价相关工作提供思路。 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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