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共生固氮作用是生物氮学说中发展很快的方面之一,这是因在农业中生态学意义及利用前途较大。多数共生固氮作用的研究是在热带及亚热带地区完成的,在温带地区研究极少。然而,苏联温带地区种植下述作物却很有前途:如粒用高粱(达200万公顷)、青贮高粱(清种及与玉米混播,达600～700万公顷)以及青饲、干饲及半干青饲高粱(达400万公顷)。
Symbiotic nitrogen fixation is one of the rapidly developing aspects of the theory of biological nitrogen, which is due to the ecological significance and utilization of agriculture in the future. Most studies on symbiotic nitrogen fixation have been done in the tropics and subtropics, with very few studies in temperate regions. However, prospects for the cultivation of the following crops in temperate regions of the Soviet Union are promising: sorghum (up to 2 million hectares), sorghum (up to 6-7 million hectares of fresh and mixed corn), and forage, dry and semi Dry green sorghum (up to 4 million hectares).