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兽药污染土壤对小麦和白菜根伸长抑制的毒性效应

Keywords: 土壤污染,兽药,根伸长,芽伸长,抑制率,复合污染

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Abstract:

含有残留兽药的粪便作为有机肥施入农田,可造成农业土壤污染,对人类健康和生态系统产生潜在危害。为评价兽药污染的潜在生态影响,本试验采用室内生长箱培养的方法,测定了黄潮土在2种常用兽药土霉素、伊维菌素污染条件下,对2种作物(小麦和白菜)根伸长、芽伸长的抑制率,以及复合污染毒性效应。结果表明,土壤中土霉素、伊维菌素浓度与作物根伸长及芽伸长抑制率呈显著线性相关(P白菜,小麦为兽药污染的敏感植物。土霉素和伊维菌素的复合污染产生明显的协同作用。

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