Evidence of slowing yield growth - The example of Swiss cereal yields
Evidence of slowing yield growth - The example of Swiss cereal yields
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DOI：
10.1016/j.foodpol.2009.11.004
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发表时间：
2010-04-01
期刊：
影响因子：
6.5
通讯作者：
Finger, Robert
中科院分区：
文献类型：
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作者：
Finger, Robert
我们分析了1961年至2006年瑞士大麦、玉米、燕麦、黑麦、黑小麦和小麦的产量趋势和产量变异。它表明，自1960年代以来，农作物产量一直呈线性增长。然而，自20世纪90年代初以来，瑞士大麦、燕麦、黑麦、黑小麦和小麦的产量一直保持稳定，这与通常认为的欧洲谷物产量的线性趋势形成了鲜明对比。我们展示了对环境友好型谷物生产的农业政策措施的引入，促进了广泛采用广泛的耕作方法和所观察到的作物产量的稳定之间的关系。因此，本文强调农业政策可能是农作物产量增长放缓的重要原因。农业政策措施将是未来作物产量的关键驱动力之一。因此，在分析未来的土地使用和粮食供应以及评估农业环境措施和政策改革时，应考虑到本研究报告所指出的作物产量可能趋于稳定的情况。(C)2009爱思唯尔有限公司版权所有。
We analyze trends in crop yields and yield variability of barley, maize, oats, rye, triticale and wheat in Switzerland from 1961 to 2006. It shows that there have been linear increases in crop yields since the 1960s. However, yields of barley, oats, rye, triticale and wheat have leveled off in Switzerland since the early 1990s, which contrasts linear trends in cereal yields that is usually assumed for Europe. We show a relationship between the introduction of agricultural policy measures towards environmentally friendly cereal production that fostered widespread adoption of extensive farming practices and the observed leveling-off of crop yields. Thus, this paper emphasizes that agricultural policy can be an important reason for slowing crop yield growth. Agricultural policy measures will be one of the key driving forces of future crop yields. Thus, the potential leveling-off of crop yields that is indicated in this study should be considered in analyses of future land use and food supply as well as in the evaluation of agri-environmental measures and policy reforms. (C) 2009 Elsevier Ltd. All rights reserved.