论文部分内容阅读
黑龙江省农业机械化研究所研制的半自动施肥点播镐,已通过省级鉴定,1990年获黑龙江省二等发明奖.该产
Heilongjiang Province Institute of Agricultural Mechanization developed semi-automatic point-fertilization fertilizer, has passed the provincial appraisal, second prize in Heilongjiang Province in 1990 Award.