优良大豆根瘤菌田间增产效果初报

Yield Increase of Soybean by Inoculation of High Efficient Soybean Rhizobia

我所将中国农科院土肥所生物固氮组从佳木斯地区土壤中根瘤分离的快。慢型大豆根瘤菌，从中筛选出的优良菌株２１７８、２１８７及其丸衣、２２３５、混合菌等接种于当地主载大豆品种合丰２５号、３１号、３３号上，表现出较高的田间共生效应，能促进生育、增加根瘤数和固氮量，产量两年比对照增产幅度在９．２—２５．４％，比６１Ａ７６增产４．６—１９．５％。

Soybean varities of Hefeng No. 25, No. 31 and No. 33 act by inoculation Slow-Growing soybean RHIZOBIA 2178, 2187 and Fast-Growing soybean RHIZOBIA 2235 seleted from Jiamusi district showed higher -field symbiotic effect, increased No. of nodules and N fixation content. Yield increased 9. 2-25. 4 % with noinoculation and 4. 6-19. 5% with 61A76.