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在大力发展农业化学化和土壤普遍遭受侵蚀的条件下,防上水库污染和淤积,乃是国民经济一项重要课题.经测定,农业生产给水库造成的污染至少占30%.
Under the conditions of vigorously developing agricultural chemistry and soil erosion, the prevention and control of pollution and sedimentation in reservoirs are an important issue in the national economy, and at least 30% of the pollution caused by agricultural production to reservoirs has been determined.