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杂草综合防治
释义
杂草综合防治
Encyclopedia
农学
杂草防治
释
integrated management of weeds
杂草综合防治
在对杂草的生物学、种群生态学、杂草发生与危害规律、杂草-作物生态系统、环境与生物因子间相互作用关系等全面、充分认识的基础上,因地制宜地运用物理的、化学的、生物的、生态学的手段和方法,有机地组合成防治的综合体系,将有危害性的杂草有效地控制在生态经济阈值水平之下,从而保障农业生产,促进经济繁荣的防治方法。
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constitutional environmental rights
constitutional heterogeneity
constitutional heterogeneity; compositional heterogeneity
constitutionalism
constitutional isomer
Constitutionalist Socialism
constitutionality
constitutional law
constitutional monarchism
constitutional movement in Kuomintang-controlled area
Constitutional Negotiations
constitutional norm
constitutional oath
Constitutional Outline of Chinese Soviet Republic
constitutional patriotism
Constitutional Period
constitutional precedent
Constitutional Principles of Border Areas of Shaanxi, Gansu and Ningxia
constitutional procedure
Constitutional Protection War
Constitutional Reform Act 2005
constitutional relation
constitutional repeating unit
constitutional repeating unit (CRU)
constitutional review
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