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热带禾本科植物根系与固氮细菌的联合共生现象,近几年来,国外已有不少报导。关于水稻根际的固氮活性,据国际水稻研究所测定,移栽后50～60天,水田土壤的固氮能力开始增强,到开花期达到最大值。我国福建农学院微生物研究室也报导了在水稻根系测出乙炔还原活性(1978)。植物根系联合共生固氮的发现,为非豆科植物扩大利用生物固氮的前景开辟了一条新途径。但就目前来说,距离在农业生产上实际应
In recent years, there have been many reports from abroad about the symbiotic phenomenon of the root system of tropical gramineous plants and nitrogen-fixing bacteria. Nitrogen fixation activity in rice rhizosphere was determined by the International Rice Research Institute. After 50-60 days after transplanting, the nitrogen fixation ability of paddy soil began to increase and reached the maximum during flowering. The Microbiology Laboratory of Fujian Agricultural College also reported measuring the acetylene reduction activity in rice roots (1978). The discovery of symbiotic nitrogen fixation in plant roots opens up a new way for expanding the use of biological nitrogen fixation in non-leguminous plants. But for now, the distance should actually be in agricultural production