摘要
氮素与根瘤固氮结合可达高产,两者矛盾对根瘤固氮产生不利影响。氮素影响根瘤固氮作用机制仍不明确。文章在现有研究成果基础上,总结氮素与大豆根瘤固氮关系研究发展进程;综述不同氮素形态和氮素浓度对根瘤形成和生长、根瘤固氮酶活性影响及相关机制研究动态;阐述氮素抑制根瘤固氮碳水化合物争夺、抑制根瘤氧供给、硝酸盐毒害、反馈调节及其他可能抑制机制;提出氮素抑制结瘤氮浓度界限模糊化,不同氮素形式、豆科种类氮素抑制机制差异化及详细抑制机制不明确等问题。
The relationship between nitrogen and nodule nitrogen fixation is very delicate. It is necessary to combine the two to achieve high yield. However, the contradiction between the two has a great negative impact on nodule nitrogen fixation. However, the mechanism of how nitrogen affects root nodulation is still unclear. Based on previous studies, the research progress of the relationship between nitrogen fixation and nitrogen fixation of soybean was summarized. The effects of different nitrogen forms and nitrogen concentration on nodule formation and growth, nitrogenase activity and related mechanisms were reviewed.The mechanism of carbohydrate competition, inhibition of nitrogen supply mechanism, nitrate toxicity mechanism, feedback regulation mechanism and other possible inhibition mechanisms of nitrogen fixation were discussed. And put forward the nitrogen inhibition nodules of nitrogen boundaries blurred. Different nitrogen forms and legume species nitrogen inhibition mechanism differentiation and detailed inhibition mechanism was not clear and so on.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2017年第1期79-88,共10页
Journal of Northeast Agricultural University
基金
国家科技支撑项目(2014BAD11B01)
关键词
氮素
根瘤
抑制
机制
nitrogen
nodule
inhibition
mechanism
