通过液体培养试验,及植物回接试验表明,在普通根瘤菌剂中添加0.1%的稀土能增强细菌的存活与侵染结瘤能力,并有增加植株高和干重的作用。据此,用草碳500克、稀土0.75克和菌液200毫升的比例,在实验室条件下批量生产的稀土菌剂,可用于花生拌种、盖种和苗期泼浇。该菌剂的稀土含量为0.1%,含根瘤菌3亿/克。每亩用量150克,成本仅0.35元。多点田间试验证明,稀土菌剂能使花生早结瘤, Through liquid culture test and plant back connection test, it was shown that addition of 0.1% rare earth in common rhizobium could enhance the survival and infection of bacteria, and increase plant height and dry weight. Accordingly, with 500 grams of grass carbon, 0.75 grams of rare earth and 200 ml of bacterial liquid ratio, under laboratory conditions, mass production of rare earth bacteria agent can be used for peanut seed dressing, seed cover and seedling pouring. The fungicide rare earth content of 0.1%, containing Rhizobium 3000000 / g. Amount of 150 grams per mu, the cost is only 0.35 yuan. More field trials have shown that rare earth bacteria can make peanut early nodulation,