检查语法并将时态改为一般现在时：During 1970–2013 in areas where reduce precipitation and evapotranspiration coincided with high temperatures the maize and soybean yields declined more suggesting a compound heat-droug

During 1970-2013, in areas where precipitation and evapotranspiration are reduced and coincide with high temperatures, maize and soybean yields decline more, suggesting a compound heat-drought effect (Lesk et al., 2021).