The climatic suitability and driving climatic factors of forage crops are considered fluctuant, and their measurements are important for the production of high‐quality forage under the context of global climate change. Meanwhile, need for improving the domestic supply of high‐quality forage sources is increasing in the related parties of forage and livestock production in Korea. Therefore, this study analyzed the climatic suitability conditions of whole crop maize (Zea mays L.) and sorghum–sudangrass hybrid (Sorghum bicolor × Sorghum sudanense) in the south area of the Korean Peninsula and Jeju Island. Furtherly, the driving climatic factors on the two summer forage crops were detected through stepwise regression analysis based on historical field experiments and climatic data. The results showed that the climatic conditions in almost all the areas of the south area of the Korean Peninsula and Jeju Island are suitable or moderately suitable for the cultivation of the two forage crops except some mountainous areas. However, since the precipitation in this region is concentrated in the growth period of the two forage crops, the accumulated precipitation was detected stressful on their yields.

中文翻译：

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朝鲜半岛南部和济州岛全谷物玉米和高粱-苏丹草杂交生产的气候适宜性图和驱动因素检测

饲用作物的气候适宜性和驱动性气候因素被认为是波动的，在全球气候变化的背景下，其测量值对于生产高质量饲草至关重要。同时，韩国草料和畜牧生产的相关方对改善国内优质草料来源供应的需求也在增加。因此，本研究分析了整株玉米（Zea mays L.）和高粱-苏丹草杂交种（高粱双色×高粱sudanense）的气候适宜性条件。）位于朝鲜半岛和济州岛的南部。此外，基于历史田间试验和气候数据，通过逐步回归分析，检测了两种夏季饲草作物的驱动气候因子。结果表明，除部分山区外，朝鲜半岛南部几乎所有地区和济州岛的气候条件都适合或中等适合两种草料作物的种植。但是，由于该地区的降水集中在两种草料作物的生长期，因此检测到积累的降水对其单产构成压力。