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紫花苜蓿在新垦区第一次播种时,自然结瘤率不高,固氮效率低。接种优良的苜蓿根瘤菌能增加根瘤及固氮量和产量。
Alfalfa in the new reclamation area when the first sowing, the natural nodulation rate is not high, nitrogen fixation efficiency is low. Inoculation of superior alfalfa rhizobium increased nodulation and nitrogen fixation and yield.