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A Long-term Analysis of Factors to Improve Nutrient Management for Winter Wheat Production in China

机译:对改善中国冬小麦生产中营养管理的因素的长期分析

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Data from 895 field experiments conducted between 2000 and 2008 were analyzed to calculate yield gaps, indigenous nutrient supplies, and nutrient use efficiencies – with the goal of improving nutrient management for wheat. Results showed an average yield gap of 0.76 t/ha between attainable yields and yields with farmers’ practice. Successive inputs of large amounts of nutrients have significantly increased soil nutrient supply, and therefore contribute to lower use efficiencies since recommendations for N, P, and K have not been adjusted downward
机译:分析了2000年至2008年之间进行的895个田间试验的数据,以计算产量差距,本地养分供应和养分利用效率,目的是改善小麦的养分管理。结果表明,可达到的产量与农民的实践之间的平均产量差距为0.76吨/公顷。大量养分的连续投入显着增加了土壤养分的供应,因此由于对氮,磷和钾的建议未向下调整,导致使用效率降低

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