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桑树病虫害防治是保证蚕桑生产稳产高产的重要措施。在桑树病虫害防治工作中,农药以对病虫作用快,效果好容易被蚕农接受,生产上经常大面积使用农药防控桑树病虫害的发生和流行。特别是近几年来对桑树病虫害农药防治技术的研究和推广应用,对控制桑树病虫害发生和流行取得显著成效。但是,农药是把双刃剑, 相似文献
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总结了南阳镇现阶段桑树病虫害防治中存在的问题,提出推广桑保专用农药;正确认识农药特性与杀虫机理,根据害虫习性、为害特点,科学、适时防治;改变治虫观念,控制用药次数等对策,从而提高了桑树病虫害防治效果。 相似文献
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桑树病虫害防治的问题与对策 总被引：2，自引：0，他引：2
桑树病虫害防治是桑园管理的基础工作,是夺取桑叶优质高产的重要技术措施,一直被科研、教育及技术推广部门所重视.表现为有科学的方法预测预报病虫害的发生时期、发生量,有规范的技术和针对性的农药防治病虫害的发生.在重点蚕区,不管是常规性病虫害还是突发性病虫害,其危害一直控制在经济水准以下,桑树病虫害防治工作对夺取优质高产,保持蚕桑生产的可持续发展作出了重要贡献.但近年来,由于异常气候条件、高效高残留农药的禁止使用及茧价低迷等多重因素影响,在桑树病虫害防治中也暴露出不少问题,直接危害蚕桑生产的发展.本文对秀城区桑树病虫害防治的问题作初浅论述,提出一些对策措施与同行共同探讨. 相似文献
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桑树病虫害的环境治理和农药的安全有效使用 总被引：5，自引：1，他引：4
江浙两省蚕桑生产历史悠久,桑树病虫害的种类及数量,在自然选择作用下,随蚕桑生产技术水平发展,也朝适宜生存的方向被动地发生着变化。本文着重分析了近年来江浙地区主要的桑树病虫害种类危害状况、发生特点及未来数年的发展趋势。桑树病虫害的防治、预防和治理是三个不同的防治层次,要最终实现对病虫害的综合治理,需要改进和完善防治方法,在此基础上建立桑病虫灾害的预防机制,然后通过各种手段调控和管理,达到环境治理的目的。安全有效地开展农药防治既是我们需要掌握的一项基本防治技术,也是我们最终实施环境治理的第一步。 相似文献
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嘉兴市是全国蚕桑重点产区,长期以来,蚕桑产业作为一项传统主导产业和绿色生态产业,在农民增收、出口创汇乃至整个国民经济中占有重要地位。桑园是蚕桑生产的基础。桑树病虫害防治是桑园管理的基础工作,是夺取桑叶优质高产的重要技术措施。近年来,由于异常气候条件、高效高残留农药的禁止使用等多重因素影响。在桑树病虫害防治中也暴露出不少问题,直接影响到我市蚕桑生产的稳定与发展。为此。对桑树病虫害防治工作中存在的问题展开调研,并提出相应对策措施。 相似文献
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忻城县桑树病虫害防治存在的问题与建议 总被引：1，自引：0，他引：1
为了有效防止桑树病虫害,促进忻城县蚕业稳定发展,实地调查忻城县桑树病虫害,对桑树病虫害防治存在的问题进行分析。调查显示,忻城县桑树病虫害防治存在气候因素与桑园环境复杂、桑园管理不科学、技术与资金支持缺乏、桑树品种抗病差等问题。提出在蚕业生产中应稳定基层技术人员队伍,建立健全蚕业技术服务网络;提高认识,加大对蚕农桑树病虫害综合防治技术的培训力度;加强桑园管理;大力推广抗病性强的桑品种等建议。 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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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2％的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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