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宣城市位于安徽省皖南山区与沿江平原结合地带,毗邻江浙沪三省(直辖市),为早稻、中稻、双季早稻、双季晚稻混栽区,常年水稻栽培面积16.33万hm2次。近年来,杂草稻在包括中国在内的世界大多数水稻产区均有发生的相关报道,并在我国不少地区呈迅速扩散趋势,其危害性仅次于稗草和千金子,严重影响水稻产量和品质,威胁农业安全生产。
Xuancheng City is located in the mountainous area of Wannan and the plains along the Yangtze River in Anhui Province. It is adjacent to the three provinces of Jiangsu, Zhejiang and Shanghai. It is a combination of early rice, mid-season rice, double-season early rice and double-season late rice. Perennial rice cultivation area is 163,300 hm2. In recent years, weedy rice has been reported in most rice producing areas in the world, including China, and has been rapidly spreading in many areas of our country. Its harmfulness is second only to that of barnyardgrass and cadmium, which seriously affects Rice yield and quality threaten agricultural safety in production.