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长期肥料试验中玉米籽粒产量趋势P.C.Nel等长期试验是获得农业系统长期可持续性信息的重要方法。Rothamsted的标准点(Jenkinson,1991)和依利诺斯大学的Mor-row小区均为典型的例子。本文描述的田间试验是1939年建立的南非最老...
Corn Yield Trend in Long-term Fertilizer Experiment. C. Long-term trials such as Nel are important ways to obtain long-term, sustainable information on agricultural systems. The Rothamsted Standard Point (Jenkinson, 1991) and the Mor-row Cell at Illinois University are typical examples. The field experiment described in this article was the oldest in South Africa established in 1939 ...