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该技术是以昆虫病毒流行病学理论为基础,以卵寄生蜂为媒介传播病毒,使病毒在寄主昆虫种群形成流行病,起到事半功倍、长期稳定控制目标害虫的效果。该技术经专家鉴定,已达到国际先进水平。该技术拥有2项发明专利,1项实用新型专利。其特点是使用安全,对人畜无毒无害;防治费用是使用化学药物的30%,效果好,持效期长,不伤害自然天敌; 相似文献
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韩玉 《中国农业信息快讯》2013,(7S):121-121
长期以来,我县主要依赖于化学农药防治害虫,由于化学杀虫剂的大量、连年使用,使农产品、土壤、水域受到农药残留污染,对人类生产、生活已构成严重威胁;害虫抗药性的增强,使得农药用药量不断增加,防治费用加大,有害生物天敌数量逐年减少,生态环境遭到严重破坏,导致害虫的再度猖獗。不符合"科学植保、绿色植保、公共植保"的要求,为保护生态环境,降低防治成本,保证农产品的安全性,采用绿色防控技术大面积控制农业害虫危害,采取害虫可持续治理措施势在必行。因此引进"生物导弹"对玉米螟进行绿色防控,以便实现我县玉米高产、稳产、优质、高效。 相似文献
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应用“生物导弹”防治玉米螟技术 总被引:1,自引:0,他引:1
长期以来,我县主要依赖于化学农药防治害虫,由于化学杀虫剂的大量、连年使用,使农产品、土壤、水域受到农药残留污染,对人类生产、生活已构成严重威胁;害虫抗药性的增强,使得农药用药量不断增加,防治费用加大,有害生物天敌数量逐年减少,生态环境遭到严重破坏,导致害虫的再度猖獗。不符合"科学植保、绿色植保、公共植保"的要求,为保护生态环境,降低防治成本,保证农产品的安全性,采用绿色防控技术大面积控制农业害虫危害,采取害虫可持续治理措施势在必行。因此引进"生物导弹"对玉米螟进行绿色防控,以便实现我县玉米高产、稳产、优质、高效。 相似文献
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农业是国民经济的基础,但由于植物病虫的为害而严重影响农作物产品的质量和产量,长期以来,我国的病虫害治工作主要依赖于化学药剂防治,特虽是对于害虫防治,农民见虫就用药,单一依靠杀虫剂来提高农业产量,久而用之,致使害虫的抗药性不断增强,用药量不断增大,防不断提高,而防效益却日超增大,防治成本不断提高,而防治效益却日趋下降,并同时严重污染环境,引起有害物质的生物富集,造成对生物的致畸,致癌,致突变等公害,严重制约了农业的可持续发展,使人类的生存环境不断恶化,在新世纪开始之际,我们广大植保工作者都应积极反思这一现状,随着科学技术的飞速发展,各种新的害虫防治技术应运而生,我们基层植保工作者肩负着推广这些新技术的使命,本文将简单介绍目前农作物害虫防治的几项新技术,从大家参考。 相似文献
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应用“生物导弹”防治玉米螟新技术 总被引:1,自引:0,他引:1
玉米螟是我省玉米上的重要害虫,2004年全省玉米种植面积为l。706万亩(1亩=1/15公顷,下同),其中玉米螟发生面积达540万亩,占种植面积的31.65%。一些地方大面积平均被害株率为10%~20%,个别田块高达30%以上,严重影响玉米的产量和农户收入。2003年广元市植保站从中国科学院武汉病毒研究所引进了“生物导弹”防治玉米螟的生防新技术,通过在该市剑阁、苍溪等地试验表明,防效较好。 相似文献
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The regulation of natural populations of invertebrate hosts by viral, bacterial, protozoan, or helminth infections is discussed, using models that combine elements of conventional epidemiology (where the host population is assumed constant) with dynamic elements drawn from predator-prey studies; the apparent absence of acquired immunity in invertebrates simplifies the analysis. Highly pathogenic infections, with long-lived infective stages, tend to produce cyclic behavior in their host populations. The models give an explanation of the 9- to 10-year population cycles of the larch bud moth (Zeiraphera diniana) in the European Alps and suggest that microsporidian protozoan and baculovirus infections may be responsible for the 5- to 12-year population cycles observed in many temperate forest insects. 相似文献
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鳞翅目昆虫的研究越来越受到人们关注,而人工饲养是昆虫研究的基础,尤其是昆虫人工饲料配方的研发.文章以现有相关文献为依据,从人工饲养技术研究、人工饲料配方的研制方法、饲养环境和饲养操作优化等方面总结鳞翅目昆虫人工饲养技术研究进展,发现鳞翅目昆虫人工饲养技术及饲料配方已取得较大进展,但现行研究主要以提高饲养昆虫的存活率为目的,而忽略昆虫的生理性状.因此,建议在优化人工饲养技术的同时,需连续和定期评估人工饲养的种群与野生种群的性能差异,为科学研究提供大量高质量的实验虫源. 相似文献
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The genetic technologies being adopted in South Asia are significant factors in the agricultural development of the area. But, labeling them " miracle seeds," solely responsible for recent agricultural growth, is misleading. Certainly the introduction of new genetic technology has catalyzed South Asian agriculture and has instilled a new dynamism essential to economic development. Somewhat similar phenomena have, however, been observed in other parts of the world in other periods of history. The nature of these genetic technologies, how they are being applied, and their limits and potential have been explored above. Also, the effects of these varieties on the generation of employment, and the distribution of benefits accruing from them have been examined in preliminary fashion. Stemming from the preceding discussion, two areas of priority appear obvious. First, the close association of genetic technologies with irrigation suggests that irrigation should receive more attention than it has in the past. Large-scale public irrigation schemes are expensive and have tended to yield low rates of return. However, there appears to be room for marginal increases in, or improvements of, existing irrigation facilities. Second, even with a rapid spread of the practices associated with highyeild varieties, it may be too much to expect the farm sector to absorb the expected increases in the rural labor force. The generation of employment is a major problem in India as well as in most other developing countries. Hence, possibilities for expanding rural, nonfarm employment and controlling population growth should be sought vigorously. 相似文献
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四川农业科学技术的发展对策 总被引:2,自引:0,他引:2
本文阐述了四川省的农业简况、农业科技现状和存在的主要问题。从21世纪农业科技发展2和特点。论述了四川省农业科学技术发展的总体目标、战略思想、主要研究领域和农业科技体制创新。 相似文献