我国南方地处热带、亚热带,气候炎热,雨量充沛,野生稻资源十分丰富。早在1917年墨里尔(Merrill,E.D.)在广东罗浮山麓至石龙平原一带发现普通野生稻。1926年丁颖在广州市东郊犀牛尾的沼泽地也有发现,后又在惠阳、增城、清远、三水、开平、阳江、吴川、合浦、钦县等县以及雷州半岛、海南岛、广西的西江流域发现这种野生稻。1935年中山大学植物研究所在海南岛南山岭下及小抱杠山边发现疣粒野生稻。1936年王启元在云南车里县橄榄坝发现疣粒野生稻,又于车里县发现药用野生稻(根据中国科学院昆明植物所标本)。 South China is located in the tropics, subtropics, hot climate, abundant rainfall, wild rice resources are very rich. As early as 1917, Merrill (E.D.) discovered common wild rice in the foothills of Luofu, Guangdong to Shilong. In 1926, Ding Ying was also found in the swamp of the rhinoceros tail in the eastern outskirts of Guangzhou, and later in Huiyang, Zengcheng, Qingyuan, Sanshui, Kaiping, Yangjiang, Wuchuan, Hepu and Qinxian counties as well as Leizhou Peninsula, Hainan Island and Guangxi Xijiang River found this wild rice. 1935 Sun Yat-sen University Institute of Botany in Hainan Island Nanshan Ling Xiaopan barbarian hillside and found wart wild rice. In 1936, Wang Qiyuan discovered warty wild rice in the olive dam of Cheri County, Yunnan Province, and discovered medicinal wild rice in Cheli County (according to the specimen of Kunming Institute of Botany, Chinese Academy of Sciences).