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苜蓿根瘤菌专一性研究与应用苜蓿根瘤菌(Rhizobium meliloti或称Sinorhizobium metliloti)专一性及应用研究取得新进展。该菌与豆科植物(苜蓿)建立共生关系而成为独立的“苜蓿根瘤菌互接种族”,一般说表现其严格的寄主专一性,也就是说,该族根瘤菌不侵染其它豆科植物结瘤固氮,对这方面基础研究在国内不多见有关报道;然而对其实际应用研究颇为活跃,它与苜蓿建立共生固氮关系已应用于农业实践,有益于发展饲料业、养殖业;同时有益于农业如改造盐碱地等。据报道,这种共生体有很好耐盐碱、抗干旱能力。在我国,河北省有6万亩含盐量2%的荒地,通过种植苜蓿使盐碱荒地得改造而变为良田,全部可种植粮食作物如小麦等,为农民增收起了重要作用;另一方面苜蓿根瘤菌与其共生体为增加土壤有机质,改善土壤结构,增
Study on the Specificity and Application of Rhizobium Meliloti (Rhizobium meliloti or Sinorhizobium metliloti). The symbiosis with the leguminous plant (alfalfa) establishes an independent “alfalfa rhizobial interdigitation,” which generally represents its strict host specificity, that is, this family of rhizobia does not infect other legumes Plant nodulation and nitrogen fixation, basic research in this area is rare in the country reported; however, its practical application research is quite active, and its symbiotic relationship with alfalfa nitrogen fixation has been applied to agricultural practice, beneficial to the development of feed industry, aquaculture; At the same time beneficial to agriculture, such as the transformation of saline land. It is reported that this symbiont has good salt and alkali resistance, drought resistance. In our country, Hebei Province has 6 million hectares of wasteland with salt content of 2%, alfalfa so that saline-alkali wasteland can be transformed into fertile land, all of which can grow food crops such as wheat, which play an important role in increasing farmers’ income. Another Alfalfa rhizobia and its symbiosis to increase soil organic matter, improve soil structure, increase