The protective cultivation, which is relative to traditional cultivation, is a new cultivation technique which combines with crop straw incorporated into field, no-tillage and reduced tillage.

保护性耕作是相对于传统耕作的一种新的耕作技术，是作物茎秆还田和免耕、少耕技术的结合。

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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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