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到1995年,联邦政府将要求那些因处于强烈侵蚀区而享受补助资金的农民实行水土保持耕作法。本项研究旨在确定连作小麦中各种耕作方法对产量和经济效益的影响,为此对6种耕作系统进行了10年的研究。有壁犁耕作系统的产量最高,免耕系统的产量最低,有壁犁系统的效益最大,圆盘耙系统的效益次之。对于强烈侵蚀区的农民来说,圆盘耙系统是最经济又能满足水土保持要求的耕作方法,而免耕系统是最不经济的耕作方法。
By 1995, the federal government will require those farmers who enjoy subsidized funds in areas of strong erosion to practice soil and water conservation farming practices. The purpose of this study was to determine the effects of various tillage methods on crop yield and economic efficiency in continuous cropping wheat. For this purpose, six farming systems were studied for 10 years. The yield of plow-tillage system is the highest, the yield of no-tillage system is the lowest, and the benefit of wall-plow system is the greatest. The benefit of disk harrow system is second. Disc harrow systems are the most economical and able to meet the soil and water conservation requirements for farmers in strongly eroded areas, while no-till systems are the least economical farming methods.