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首页> 外文期刊>Theoretical and applied climatology >Agroclimatological suitability mapping for dryland maize production in Lesotho
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Agroclimatological suitability mapping for dryland maize production in Lesotho

机译：莱索托旱地玉米生产的农业气候适宜性图

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摘要

The climatic potential of maize under dryland fanning in Lesotho, southern Africa, was investigated using five suitability indices comprising probability of accumulating heat units of greater than 1,500 growing degree days, probability of a frost-free growing season, probability of seasonal rainfall of more than 500 mm, probability of drought during the flowering to grain-filling stages and the slope of an area. A geographic information system layer was prepared for each of these parameters and the layers overlaid using different weights for each of the climatic suitability indices to obtain an agroclimatic maize suitability map for Lesotho. This analysis yielded different suitability classes. This variability points to prevalence of climatic constraints that need to be acknowledged when attempting to identify management strategies that can optimize the rain-fed maize production in climatically variable environments.
机译：使用五个适宜性指标调查了南部非洲莱索托旱地扇动下玉米的气候潜力，其中包括累积热量单位大于1,500个生长日的热量单位，无霜生长季节的可能性，季节性降雨的可能性大于5。 500毫米，开花期至灌浆期和某个地区的干旱概率。为这些参数中的每一个准备了一个地理信息系统层，并为每个气候适宜性指数使用不同的权重覆盖了这些层，以获得莱索托的农业气候玉米适宜性图。该分析得出了不同的适用性等级。这种可变性表明，在尝试确定可以在气候变化的环境中优化雨养玉米生产的管理策略时，必须认识到气候约束的普遍性。

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  • 来源
    《Theoretical and applied climatology》 |2013年第2期|227-236|共10页
  • 作者

    Mokhele Edmond Moeletsi; Sue Walker;

  • 作者单位

    Agricultural Research Council-Institute for Soil, Climate and Water, Private Bag X79, Pretoria 0001, South Africa,Department of Soil, Crop and Climate Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa;

    Department of Soil, Crop and Climate Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa;

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