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May is a crucial month for winter wheat filling, but a severe drought has gripped central China's Henan Province. In Qixian County, smart irrigation is helping farmers fight extreme weather. A large sprinkler on rails moves slowly, spraying water, fertilizer and pesticides at once. A rotating sprinkler with corner arms reaches every edge of the wheat fields. Fine droplets fall evenly on wheat during its grain-filling stage. These smart systems aim to protect crops and ensure a strong harvest. Henan province is one of the major grain production areas in China, which produces one fourth of the country's wheat output.