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植物源杀虫剂
释义
植物源杀虫剂
Encyclopedia
农学
植物源杀虫剂
释
botanical insecticides
植物源杀虫剂
利用从具有杀虫特效的植物中提取的有效成分制成的药剂。又称植物杀虫剂、生物农药。是在对一些植物所具有的杀虫活性及其具有杀虫活性的有效成分研究的基础上发展起来的绿色、安全农药。
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distribution of disease by place
distribution of eigenvalues
distribution of electricity
distribution of environmental chemicals
distribution of errors
distribution of ethnic geography
distribution of exponential type
distribution office of newspapers and periodicals
distribution of finite energy
distribution of food, money and materials to disaster-stricken people
distribution of fund
distribution of heat production in the crust
distribution of incident solar irradiance at the top of the atmosphere
distribution of industry
distribution of integral points
distribution of mineral resources
distribution of mine ventilation quantity
distribution of national income
distribution of nuclear density
distribution of nuclear matter
distribution of order statistics
distribution of population
distribution of power non-residues
distribution of power residues
distribution of prime numbers
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