7Noel D. Uri, Factors Affecting the Use of Conservation Tillage in the United States[J]. Water, Air, and Soil Pollution 1999,116: 621-638
8Ronald P. Beyaert, Jacqueline W. Schott, and Peter H. White. Tillage Effects on Corn Production in a Coarse-Textured Soil in Southern Ontario[J]. Agronomy Journal.2002 Vol.94.July-August,767-774
9Matt Liebman, Charles L.Mohler, Charles P.Staver. Ecological Management of Agricultural Weed[M]. 2001, 151-169,229-251
10Noel D. Uri. The Environmental Consequences of the Conservation Tillage Adoption Decision in Agriculture in the United States[J]. Water, Air, and Soil Pollution 1998, 103:9-33