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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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copy number
copy number variation
copy number variation analysis
copy of a memorial with the emperor's comments written in cinnabar ink
copy of collection
Copy of Han Stele by Huang Yi
copy of the original memorial to the throne and the emperor's comments
copy-on-write
copy-on-write, COW
copy out by imitation on see-through paper over the original one
copy out by metal movable type printing
copy out by woodblock printing
copy photography
copy propagation
copyright
copyright agency
Copyright Clearance Center
Copyright, Designs and Patents Act 1988
copyright industry
copyright information service
copyright infringement
copyright law
copyright law of Canada
copyright law of France
copyright law of Germany
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