Abstract In the Mexican Altiplano, beans and corn are the main crops. Conditions favoring hail -- high daily minimum temperature and high rainfall intensity -- are expected to increase under climate change scenarios. If soil humidity remains suitable for plant growth until October, an adaptive strategy to reduce hail and frost damage consist in delaying sowing date. This strategy could permit crop maturation while frost events are delayed later in the year with climate warming. To test whether such a future climate scenario would have a negative effect on crop yield, we tested two sowing dates for rainfed beans, representing regular and delayed sowing along with a decreased precipitation regime (-30 %) and increased +2 °C canopy temperature with respect to ambient conditions. The first sowing in 2015 was completely destroyed at the end of July. Results for 2015, 2017 and 2018 revealed that overall warming favored greater grain yield than ambient temperature (P

中文翻译：

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在墨西哥高原气候变暖和降水减少的情况下，晚播日期作为雨养豆类生产的适应性策略？

摘要 在墨西哥高原地区，豆类和玉米是主要农作物。在气候变化情景下，有利于冰雹的条件——每日最低气温高和降雨强度高——预计会增加。如果土壤湿度在 10 月之前仍然适合植物生长，则减少冰雹和霜冻损害的适应性策略包括推迟播种日期。这种策略可以允许作物成熟，而霜冻事件会随着气候变暖在今年晚些时候推迟。为了测试这种未来气候情景是否会对作物产量产生负面影响，我们测试了雨养豆类的两个播种日期，分别代表常规和延迟播种以及降水量减少 (-30 %) 和 +2 °C 冠层温度升高相对于环境条件。2015年的第一次播种在7月底被完全销毁。