黑龙江省农科院耕作栽培所经三年的努力,研制成功我国第一台ZXJB—4型自走式小区精量播种机,1986年10月通过部级鉴定。该机可单粒点播,也可穴播;可垄上播,又可平播。株行距、穴粒数可调,操作简单;清种、供种迅速方便,不混杂。该机采用自走式通用梁架,除能完成玉米、大豆、高梁、小麦等作物的小区精量播 Heilongjiang Academy of Agricultural Sciences cultivation and cultivation by the efforts of three years, the successful development of China’s first ZXJB-4 self-propelled plot precision sowing machine, in October 1986 through ministerial identification. The machine can be single-pitted, can also be broadcast; Ridge on the ridge, but also broadcast. Row spacing, hole-particle number adjustable, simple operation; Qing species, for species quickly and easily, not mixed. The machine uses a self-propelled universal beam, in addition to complete the corn, soybeans, sorghum, wheat and other crops plot precision broadcast