Peanuts are widely grown in Brazil because of their great importance in the domestic vegetable oil industry and the succession of sugarcane, soybean and maize crops, contributing to soil conservation and improvement in agricultural areas. Thus, the present study aimed to determine the zoning of peanuts' climatic risk by estimating the water requirement satisfaction index (WRSI) for the crop in Brazil. We used a historical series of data on average air temperature and rainfall between 1980 and 2016. Reference evapotranspiration was estimated using the method of Thornthwaite, and we subsequently calculated crop evapotranspiration and maximum evapotranspiration. Water balances for all stations were calculated using the method of Thornthwaite and Mather, with an available water capacity in the soil of 15, 30 and 45 mm. The definitions of suitable, unfit and restricted areas and the planting season were performed using the WRSI.

中文翻译：

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巴西不同种植季节花生种植的气候风险

花生在巴西广泛种植，因为它们在国内植物油工业和甘蔗、大豆和玉米作物的继承中具有重要意义，有助于保持和改善农业地区的土壤。因此，本研究旨在通过估计巴西作物的需水满意度指数 (WRSI) 来确定花生气候风险的分区。我们使用了 1980 年至 2016 年间平均气温和降雨量的一系列历史数据。使用 Thornthwaite 方法估算了参考蒸发量，随后我们计算了作物蒸发量和最大蒸发量。使用 Thornthwaite 和 Mather 的方法计算所有站点的水平衡，土壤中的可用水容量为 15、30 和 45 毫米。合适的定义，