Taking planting as a main point, it studies Bao thought of intensive farming, such as multi-crop a year, soil tillage, mid-cultivation management and reasonable application of manure, etc.

再次，研究包世臣在种植业方面精耕细作的技术思想，包括多熟种植、土壤耕作、中耕管理、合理施肥技术思想等。

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In 2000, Iowa's attorney general declared DeCoster a "habitual violator" of state environmental laws after a series of discharges of manure from his hog-farming operations.

CNN: No further egg recalls expected, feds say