冬大豆是利用水稻收获后的地力和光、热、水资源增种的一季庄稼。它具有生长周期短、投入少、种植简便、效益好等优点，是增粮、增收、增饲和增肥地力的多效作物。１９９７年景东自治县种植冬大豆４２００ｈｍ２，总产４９１．４万ｋｇ，平均６６７ｍ２产７８ｋｇ，按市场... Winter soybean is the use of rice after harvest of the land and light, heat, water a quarter of additional crops. It has the advantages of short growth cycle, less investment, simple planting and good benefits. It is a multi-effect crop that increases grain yield, increase yield, increase fertility and fertility. Jingdong Autonomous County in 1997 planting winter soybean 4200hm2, a total of 4914000 kg, an average of 667m2 yield 78kg, according to the market ...