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为全面摸清沼液这一无公害有机肥的肥效,掌握其施用时期,施用方法,为大面积推广应用提供科学依据,特安排实施了本试验。
In order to fully understand the effect of biogas slurry pollution-free organic manure, grasp the application period and application method, provide a scientific basis for large-scale popularization and application, especially the implementation of this test.