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首页> 外文期刊>Pedosphere: A Quarterly Journal of Soil Science >Wheat Grain Yield and Yield Stability in a Long-Term Fertilization Experiment on the Loess Plateau
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Wheat Grain Yield and Yield Stability in a Long-Term Fertilization Experiment on the Loess Plateau

机译：黄土高原地区长期定位施肥的小麦籽粒产量和产量稳定性

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摘要

To provide a scientific basis for sustainable land management, a 20-year fertility experiment was conducted in ChangwuCounty, Shaanxi Province, China to investigate the effects of long-term application of chemical fertilizers on wheat grainyield and yield stability on the Loess Plateau using regression and stability analysis. The experiment consisted of 17fertilizer treatments, containing the combinations of different N and P levels, with three replications arranged in a randomized complete block design. Nitrogen fertilizer was applied as urea, and P was applied as calcium superphosphate.Fertilizer rates had a large effect on the response of wheat yield to fertilization. Phosphorus, combined with N, increasedyield significantly (P <= 0.01). In the unfertilized control and the N or P sole application treatments, wheat yield had adeclining trend although it was not statistically significant. Stability analysis combined with the trend analysis indicatedthat integrated use of fertilizer N and P was better than their sole application in increasing and sustaining the productivityof rainfed winter wheat.
机译：为了给土地可持续管理提供科学依据，我们在陕西省昌武县进行了为期20年的肥力试验，通过回归和回归分析研究了长期施用化肥对黄土高原地区小麦籽粒产量和产量稳定性的影响。稳定性分析。该实验由17种肥料处理组成，包含不同N和P水平的组合，并按随机完整块设计安排了三个重复。氮肥用作尿素，磷用作过磷酸钙。施肥量对小麦产量对施肥的响应影响很大。磷与氮的结合显着提高了产量（P <= 0.01）。在未施肥的对照和单独施用氮或磷的处理中，小麦产量虽然没有统计学意义，但有下降的趋势。稳定性分析与趋势分析相结合表明，氮肥和磷肥在提高和维持雨养冬小麦生产力方面要比单独施用氮肥和磷肥单独使用要好。

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