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据先正达英国公司介绍,其用于土豆固氮的生物刺激剂Vixeran,在今年春季为作物提供相当于30 kg/ha的化学氮肥。产品中高效的植物内生菌——盐居固氮菌(Azotobacter salinestris),将空气中的氮转化成土豆可利用的形式,可作为叶、根内生菌,也可在根际土壤中 ...