一九七七年七月二十五日至二十八日,由吉林省白城地区农业机械化会战办公室主持,在扶余县召开了对扶余县二轻机械厂、抉余县农机研究所共同研制的BZS-4播种、中耕、深松三用机的鉴定会。三用机是以我省定型的综合号播种机为基础,并参照省内定型的综合一号中耕 From July 25 to July 27, 1977, chaired by the Agricultural Mechanization Commanders’ Office of Baicheng Region in Jilin Province, it was jointly developed in Fuyu County on the Second Light Machinery Factory in Fuyu County and the Agricultural Machinery Research Institute in Jiyu County BZS-4 sowing, cultivation, deep pine with the identification of three machines. Three-use machine is based on our province stereotypes integrated planter as a basis, and with reference to the province’s integrated No. One cultivation