长江流域及其以南地区是我国大豆三大主产区之一,也是我国的水稻主要产区,具有稻田种豆的优越条件和丰富经验。六十年代由于大力发展双季稻和绿肥作物,水田种豆急剧下降。七十年代初部分地区才恢复稻田种豆,并在新的生产条件下,发展了稻豆两熟、稻豆冬作物一年三熟等栽培制度,致使以水稻为主,稻、豆、冬作物一年多熟的耕作制逐步向北推进,直到北纬33度的双季稻地区。作者十七十年代开始就对湖北的稻田种豆进行调查研究。洲、苏、赣、闽、浙、粤诸省也相继开展这方面的研究工作。从已有 The Yangtze River valley and its south is one of the three major producing areas of soybean in China and also a major paddy producing area in China. It has the superior conditions and rich experience in planting paddy fields. Sixty years due to the vigorous development of double cropping rice and green manure crops, paddy beans sharply declined. In the early 1970s, the cultivation of paddy beans in paddy fields was resumed in some areas of the early 1970s. Under the new production conditions, the two-cropping system of rice beans and the three-year paddy cultivation of rice and winter crops were developed year by year. As a result, mainly rice, rice, beans and winter Crops more than a year of farming system to gradually move north until 33 degrees north latitude double cropping rice area. Author from the seventies on the Hubei paddy beans were investigated. Zhou, Su, Gan, Fujian, Zhejiang, Guangdong provinces have also carried out research in this area. From the existing