Trends and spatial analysis of temperature and rainfall on rice yield in Nigeria was carried out. Forty year of past trends (1970–2010) was conducted with climate data obtained from the International Institute of Tropical Agriculture, Ibadan, Nigeria while upland rice yield data were obtained from the Food and Agriculture Organization. Six cities, one in each of the six agro‐ecological zones which were Calabar, Enugu, Ikeja, Ilorin, Kaduna, and Maiduguri were selected. Geographic information systems mapping for spatial analysis of temperature and rainfall over Nigeria was carried out. Mann–Kendall, Sens' tests, Pettitt's, and Buishand's tests and multiple linear regressions were used as statistical tools for analysis. Increasing rainfall trends in Enugu, Calabar, and Ikeja but decreasing trends were observed in Ilorin Kaduna and Maiduguri while temperature showed increasing trends in all the cities in the last four decades. Statistically significant positive trends of rice yield, rainfall, and temperature were observed in Ikeja and Maiduguri in the last four decades. Mann–Kendall tests showed that rice yield and temperature had generally statistically significant positive trends in Calabar Ilorin Kaduna, and Enugu while rainfall and yield were significant in Calabar Enugu but not significant in Ilorin and Maiduguri adaptation strategies to genetically modify rice varieties and effective water use strategies in areas of rainfall deficit are recommended to ensure food security.

中文翻译：

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尼日利亚稻米温度和降雨模式的趋势和空间分析

进行了温度和降雨对尼日利亚水稻产量的趋势和空间分析。使用从尼日利亚伊巴丹国际热带农业研究所获得的气候数据进行了40年的过去趋势（1970-2010年），而从粮食及农业组织获得了旱稻产量数据。六个城市，在六个农业生态区中的每个城市中分别是Calabar，Enugu，Ikeja，Ilorin，Kaduna和Maiduguri被选中。进行了地理信息系统制图，对尼日利亚的温度和降雨进行了空间分析。曼恩·肯德尔（Mann-Kendall），森斯（Sens）的检验，佩蒂特（Pettitt）和比尚（Buishand）的检验以及多元线性回归被用作分析的统计工具。Enugu，Calabar和Ikeja的降雨趋势有所增加，但Ilorin Kaduna和Maiduguri的降水趋势却有所下降，而过去四个十年中所有城市的气温均呈上升趋势。在Ikeja和Maiduguri观察到水稻产量，降雨量和温度的统计显着正趋势在过去的四十年中。曼-肯德尔试验表明，水稻产量和温度曾在一般统计显著积极趋势卡拉巴尔伊洛林卡杜纳和埃努古，降水和产量均显著在卡拉巴尔埃努古但不显著伊洛林和迈杜古里适应战略进行遗传改造的水稻品种和有效的水资源利用建议在降雨量不足的地区采取策略，以确保粮食安全。