不同含氮化合物对鸡骨草生长和结瘤的效应  

Effects of different nitrogenous compounds on growth and nodulation of Abrus cantoniensis

作　　者：黄荣韶[1] 玉永雄[2] 胡艳[2] 盛孝邦[3] 

机构地区：[1]广西大学农学院,广西南宁530005 [2]西南农业大学动物科技学院,重庆400716 [3]湖南农业大学农学院,湖南长沙410128

出　　处：《中国中药杂志》2005年第24期1906-1909,共4页China Journal of Chinese Materia Medica

基　　金：国家重点基础研究发展规划项目(2001CB108905)

摘　　要：目的:研究不同类型含氮化合物对鸡骨草生长和结瘤的效应。方法:在盆栽鸡骨草幼苗接种根瘤菌后,分别用KNO3,NH4NO3,(NH4)2SO4作为氮源配制不同氮浓度的营养液补充水分和营养。培养70 d后,测定植株生长和结瘤情况。结果:含氮化合物对鸡骨草的营养生长有不同程度的促进作用,其中以(NH4)2SO4和NH4NO3的效果最好;它们对鸡骨草结瘤固氮的抑制效应也是明显的,其抑制效应的大小顺序为:NH4NO3>(NH4)2SO4>KNO3;KNO3处理以及低浓度的(NH4)2SO4和NH4NO3不影响鸡骨草植株正常结瘤,高浓度的(NH4)2SO4和NH4NO3处理严重抑制结瘤或不能结瘤。结论:铵态氮对鸡骨草结瘤固氮的抑制能力较强,减少铵态氮肥的使用有利于充分发挥生物固氮的作用来提高原料药材的质量。Objective： The research aimed at the effects of different nitrogenous compounds on growth and nodulation of Abrus cantoniensis. Method： After the seedlings of the herb were inoculated with rhizobia in potted culture, they were supplied with nutrition solutions which contained the three nitrogenous compounds, KNO3, NH4NO3, （NH4）2SO4 of different nitrogen concentration. The growth and nodulation of seedlings was determined after 70 days. Result： Different nitrogenous compounds were able to enhance the vegetable growth of seedlings variously. The effect of （ NH4）2SO4 and NH4NO3 on growh was better than that of KNO3. Seedlings nodulation was obviously inhibited by these nitrogenous compounds. Their inhibitory effects ranked NH4NO3 〉 （NH4）2SO4 〉 KNO3. The treatments of KNO3 and the lower concentration treatments of NH4NO3 and （ NH4 ）2 SO4 didn＇ t inhibit the nodulation of seedlings, but the higher concentration treatment of NH4NO3 and （NH4）2SO4 severely inhibited nodulation or even made a no format/on of nodule. Conclusion： The results showed that ammoniium nitrogen the higher inhibitory ability to the nodulation of seedlings of A. cantoriensis than nitrate nitrogen. Therefore, the application of ammonium nitrogen fertilizer should be controlled in culture of the herb, which is in favor of increasing the function of biological nitrogen fixation and the quality of the medicinal materials of A. cantoniensis.

关 键 词：鸡骨草 含氮化合物 生长 结瘤 效应 铵态氮 药材质量 

分 类 号：S567.9[农业科学—中草药栽培]