The purpose of this work is to remove Pb(Ⅱ) from the aqueous solution using a type of hydrogel composite.A hydrogel composite consisting of waste linear low de
【摘 要】本篇论文主要论述了无公害农产品花椰菜病虫害的防治原则及防治措施。 【关键词】花椰菜;霜霉病;立枯病;黑腐病;黑斑病 [Abstract] This paper mainly discussed the control principle and prevention and control measures of the pest control of non-public agri