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用２．５ｍｇ／ｋｇ的绿黄隆＋１ｍｇ／ｋｇ的萘乙酸复会处理２－３叶期小麦根，即能诱导小麦结瘤，且植株生长正常，明显优于用１ｍｇ／ｋｇ２．４－Ｄ处理的小麦。同时接种田菁茎瘤菌（ＡｚｏｚｈｉｚｏｂｉｕｍＣａｕｌｉｎｏｄａｎｓ）后电镜超薄切片看到形成含菌细胞，用乙炔还原法测定这些瘤状物能显示一定固氮活性。
2.5mg / kg of chlor-l + 1mg / kg of naphthalene acetic acid resumed 2-3 leaf stage wheat root, that can induce nodulation of wheat, and the growth of plants was significantly better than with 1mg / kg2.4-D Treated wheat. Simultaneously, Azozhizobium Caulinodans was inoculated and the formation of bacteria-containing cells was observed by electron microscopy. The determination of these nodules by acetylene reduction showed some nitrogen fixation activity.