依兰收获机厂研制的北大荒—6大型自走式联合收割机和4DDZ挠性割刀通过科研成果鉴定。北大荒—3.5联合收割机,通过鉴定,初步定型。上述鉴定是黑龙江省农场总局科委召开的鉴定会作出的。经省农场总局鉴定站测试表明:北大荒 Yilan harvester plant developed the Great Northern Wilderness-6 large-scale self-propelled combine harvester and 4DDZ flexible knife identified through scientific research. Great Northern Wilderness -3.5 combine harvester, through the identification of the initial stereotypes. The above appraisal is made by the appraisal meeting held by the Science and Technology Commission of Heilongjiang Provincial Farm General Administration. Provincial Farm Bureau Identification Station tests show that: the Great Northern Wilderness