三江公社以种植水稻为主,有12687亩耕地,其中稻田9687亩.1977年在深入开展“农业学大寨”群众运动中,早造试种杂交水稻860.8亩,取得了丰收.晚造又大面积推广杂交水稻6016亩,占晚稻面积62.1%,又获得了大幅度增产,平均亩产755斤,比常规品种亩增138斤,促进了全社晚稻大增产,晚稻总产比早稻增产767担,比历史最高1975年晚稻增产8040担,增长13.3%,亩产增加77斤. Sanjiang commune to grow rice, there are 12,687 acres of arable land, of which 9,687 acres of paddy fields .1977 years in-depth “agriculture learn Dazhai ” mass movement, as early as the test hybrid rice 860.8 acres and achieved good harvest. And a large area to promote 6016 acres of hybrid rice, accounting for 62.1% of the area of ​​late rice, but also a substantial increase in yield, an average of 755 pounds per mu, than the conventional varieties mu by 138 pounds, promoted the whole plant big late rice yield, Tam, higher than the history of late rice in late winter increased production of 8040 Tam, an increase of 13.3%, an increase of 77 kg per mu.