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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Overall, the A.?indica-derived products had the most potential for use in an IPM system for the control of whitefly, which includes E.?formosa as a biocontrol agent.
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A Soybean IPM system was deployed in large, continuous river basin areas.
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The IPM system is sustainable and environmentally acceptable to the industry.
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Thus, these biorationals show that there is a potential to use them in an IPM system, being safe for natural enemies of B.
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Use of the egg parasiteEdovum puttleri [Hym.: Eulophidae] in an IPM system developed for Colorado potato beetle [Col.: Chrysomel
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| | River valley management means that soil and water give the highestecologic, economic and social benefits. With river valley as a unit of management,on basis of an overall program, land is reasonably alloted for agriculture, forest, animal husbandry and sideline production. With comprehensive management prac-tices adopted according to local suitable conditions, priority is set on protection,improvement and rational utilization of soil and water resources. In the continent ofAmerica, river valley management w... | | 本文论述了流域治理的概念和起源;介绍了欧洲、美国、澳大利亚、新西兰,以及一些发展中国家治理流域的经验;阐述了流域治理与林业科学的关系。我国总结出了以流域为单元合理利用土地,以及水土保持的林草、农业技术、法律性措施的流域综合治理体系。 | | 文摘来源 | | This paper described the concept and main components of Integrated Pest Manage-ment System(IPMS)of rice,reviewed the development of the IPMS in China,analyzed the possible effects of development of socialistic marketing economic system on the IPMS and discussed the re-lated strategies to improve the system. | | 在论述有害生物综合治理体系概念和组成的基础上,回顾了我国水稻有害生物综合治理体系主要组成成份的演变和特点,分析了社会主义市场经济的发展对有害生物综合治理体系的可能影响,并讨论了相应的对策. | | 文摘来源 | | Wheat powdery mildew is the first important disease in spring wheat zone of Liaohe River Basin. Deep and extensive researches on IPM system of wheat had been conducted for more than one decade. The primary inoculum source and infection cycle was clearly explained. The mathematical model for forecasting the disease occurrence and epidemics was established and the credibility of the model was above 86%. The physiological races and virulence frequencies were also tested and analized. Resistance wheat cultivars... | | 经过10余年小麦白粉病综合治理系统研究,摸清了东北春麦区小麦白粉病初菌源来源及侵染循环规律,建立了准确度达86%以上的预测小麦白粉病发生与流行的预测式,明确了东北春麦区小麦白粉病菌的小种种群构成及毒力频率。筛选小麦白粉病的抗病品种,并培育和推广适合辽河流域的抗白粉病品种。将综合治理技术组装配套,建立了综合治理体系,并进行大面积示范,取得显著社会、经济和生态效益。 | | 文摘来源 | |   | | << 更多相关文摘 |
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