氮肥对乌拉尔甘草生长及有效成分的影响  

Nitrogen nutrition in Glycyrrhiza uralensis Fisch

作　　者：张燕[1] 王继永[1] 刘勇[1] 王文全[2] 

机构地区：[1]北京林业大学资源与环境学院 [2]北京中医药大学中药学院

出　　处：《北京林业大学学报》2005年第3期57-60,共4页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目 (30 1 71 1 4 1 );教育部高等学校博士点基金项目 (2 0 0 1 0 0 2 2 0 0 1 )

摘　　要：20 0 2年作者在盆栽条件下研究了氮素营养对1、2年生乌拉尔甘草产量和质量的影响.结果表明,在氮素梯度试验中,当施氮量到达0 15g L之前,氮的增施对甘草主要生长、生理、产量和药效等指标均有良好的促进作用,以0 10～0 15g L为最佳,而超过0 15g L时,甘草开始受到抑制,各指标均有不同程度的下降.甘草净光合速率与生物量、产量呈显著线性正相关.The effect of different nitrogen levels on G.uralensis was studied in 2002. The results show that before the dosage of nitrogen fertilization reaches 0 15 g/L, an increasing dosage of nitrogen fertilization will accelerate growth and physiological indicators. When the dosage is 0 15 g/L, almost all indicators reach their highest levels; when the dosage exceeds 0 15 g/L, the values of all the indicators begin to decline to different degrees. The net photosynthetic rate of \%G.uralensis\% has a significantly positive linear relation with biomass and yield. The nitrogen, phosphorus and potassium contents in \%G. uralensis\% leaves also have linear relations with height, root diameter, single plant weight and yield of \%G.uralensis\%. Increasing nitrogen levels has no obvious effect on chlorophyll fluorescence parameters, but can improve glycyrrhizinic acid content.

关 键 词：乌拉尔甘草 施肥 氮素营养 植物产量 甘草酸 

分 类 号：S567.71[农业科学—中草药栽培]