共查询到20条相似文献，搜索用时 156 毫秒
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伪劣农药是市场竞争和不法商贩为牟取暴利导致的结果，而最终受害的是使用伪劣农药的农民。农民施用伪劣农药后有的达不到预期效果，造成减产；有的还可能对作物造成严重伤害，影响到收成，所以农民朋友在挑选农药时要特别注意鉴别农药的真假。 相似文献
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使用农药防除病虫害过程中,一些农民反映受骗上当,购买了"伪劣农药",病虫害没有得到有效的防治.我们带着这个问题,进行了深入调查研究,发现用农药防治病虫害效果不好或不明显的原因,除了确实是伪劣农药外,更重要的是农民在使用农药的过程中出了差错. 相似文献
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《中国农业信息快讯》2014,(8):51-51
伪劣农药是市场竞争和不法商贩为牟取暴利导致的结果,而最终受害的是使用伪劣农药的农民。农民施用伪劣农药后有的达不到预期效果,造成减产;有的还可能对作物造成严重伤害,影响到收成,所以农民朋友在挑选农药时要特别注意鉴别农药的真假。一要看厂家及联系地址：正规厂家一般都在产品的标签上写明详细的厂家地址、邮政编码、联系电话等。 相似文献
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Chinese farmers are often accused of overusing pesticides that play a crucial role in enhancing crop yield by reducing losses to crop pests. Pesticide overuse has caused a series of negative health and environmental externalities. This paper quantifies the productivity effect and the optimal amount of pesticides in rice, cotton and maize production in China from the economic perspective. Using survey data collected in 2012 and 2013, both Cobb-Douglas and Weibull damage control specifications are used to estimate the production function. Results show that pesticides have statistically significant productivity effect on crop yield. On the condition of Weibull damage control specifications, the marginal products of 1 kg of the active ingredients of pesticides for rice, cotton and maize are 71.06, 22.73 and 98.45 kg, respectively. However, 57, 64 and 17% of the actual amount of pesticides are overused for rice, cotton and maize, respectively. Moreover, the productivity effect of pesticides would be overestimated using Cobb-Douglas specification without incorporating a damage control agent. 相似文献
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Douglas L. Murray 《Agriculture and Human Values》1991,8(4):19-29
Pesticides remain an integral part of development efforts to renew economic growth in Central America and lift the region out of a severe economic crisis. This paper analyzes the implications of the continued reliance on pesticides for heightening economic and ecological problems in the agrarian sector.Relying on a case study of export melon production in Choluteca, Honduras, the author argues that current development strategies, which rely heavily on pesticides, are generating ecological disruption that creates conditions biased against small producers. Lack of knowledge of the hazards inherent in the technology and the resulting emergence of pesticide resistant pests, crop losses, environmental contamination, and public health problems, pose serious obstacles to the survival of small-scale producers. Meanwhile transnational and other flexible, large scale operations often adapt to such conditions, and on occasion may even turn such problems to their benefit. The author concludes that economic growth may only be sustainable when questions of social equity and ecological viability are brought to the forefront of U.S. development strategies. 相似文献
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为评估疫区养殖户的经济损失,分析补偿政策对养殖户损失的支持强度,制定合理的疫情补偿标准提供理论和实证依据,利用宁夏中卫禽流感疫区的微观调研数据,建立蛋鸡养殖户经济损失评价模型,进而评价疫区散养户和规模养殖户的经济损失及其补偿政策支持强度。结果表明:禽流感疫情给疫区蛋鸡养殖户造成的间接经济损失大于直接经济损失;疫区蛋鸡养殖户遭受的经济损失因蛋鸡月龄而异,5个月的蛋鸡给养殖户带来的经济损失最大;疫区蛋鸡养殖户遭受的经济损失因其饲养方式而异,规模养殖户遭受的经济损失相对较大;国家和宁夏疫情补偿标准仅能弥补疫区蛋鸡散养户和规模养殖户经济损失的24.64%、20.94%和26.29%、22.02%,补偿强度不足,补偿标准的满意度较低。政府一方面要完善蛋鸡养殖户疫情损失构成,提高疫情补偿额度;另一方面要考虑蛋鸡月龄和养殖户的饲养方式,制定差异化的补偿标准。 相似文献
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首先,综述了国内外静电喷雾技术发展现状,针对新疆目前果园施药过程中漂移、流失严重及环境日益恶化的问题,设计开发了一种有效降低农药施用量,提高农药在靶标上的附着率,减少对人体和环境的污染的新型果园气力式静电喷雾机。该机采用静电感应原理,将带上电荷的雾滴,在静电力和高速气流作用下直接送至靶标。该喷雾机具有良好的经济效益和社会效益:对农户而言,可将农药有效利用率提高到60%以上,药液损失减少50%,降低防治成本10%～20%,节省农药25%左右;对企业而言,投资该项目的试算利税率可达21.4%,效益非常好;整机只需拖拉机手一人操作即可,高效低污染,十分符合国家环保和"三农"政策。因此,这种新型的果园气力式静电喷雾机具有良好的推广应用前景。 相似文献
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对河北省农村地区农药污染和安全使用的调查显示,经济效益、安全意识、农药管理和残留检测以及植物保护技术水平是影响河北省农村地区农药安全使用的主要因素。在此基础上提出了相应的对策和建议。 相似文献
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