Workers transport fertilizer raw materials to the intelligent fertilizer mixing production line at a farming company under Beidahuang Group in northeast China's Heilongjiang Province, March 16, 2026. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Xu Yingxian/Xinhua)

Farmers work at a seedling cultivation base of a farming company under Beidahuang Group in northeast China's Heilongjiang Province, March 17, 2026. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Li Xing/Xinhua)

A drone photo taken on March 17, 2026 shows farmers preparing for seedling cultivation at Youyi Farm Co., Ltd. under Beidahuang Group in northeast China's Heilongjiang Province. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Xu Hongyu/Xinhua)

A farmer carries out seedbed leveling operation at a farming company under Beidahuang Group in northeast China's Heilongjiang Province, March 16, 2026. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Wang Jinbin/Xinhua)

Workers carry fertilizers at a farming company under Beidahuang Group in northeast China's Heilongjiang Province, March 16, 2026. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Lu Wenxiang/Xinhua)

A farmer screens the seedling bed soil at a farming company under Beidahuang Group in northeast China's Heilongjiang Province, March 17, 2026. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Huang Yongxing/Xinhua)

Workers transport mixed fertilizers at a farming company under Beidahuang Group in northeast China's Heilongjiang Province, March 17, 2026. In recent days, the agricultural production units of Beidahuang Group in the Heilongjiang Reclamation Area are making preparation work for spring ploughing. (Photo by Qian Boyu/Xinhua)