四方牌4L～80型水稻联合收割机由浙江省四方集团公司(地址:浙江省永康市永拖路57号,邮编:321315)研制。它根据我国南方水稻产区的自然条件、农艺要求以及当前农村经济状况,吸收国内外优秀机型的长处,经过10多年反复研究、试验 Sifang brand 4L ~ 80 rice combine harvester by the Zhejiang Sifang Group Company (Address: Wing Lung Road, Yongkang City, Zhejiang Province, No. 57, Zip code: 321315) developed. Based on the natural conditions, agronomic requirements and current rural economic conditions of the rice producing areas in southern China, it absorbs the strengths of excellent models both at home and abroad. After more than 10 years of repeated research and experiments