遮阴对青牛胆生长与物质分配的影响

Effect of Shading on the Growth and Material Distribution of Tinospora sagittata(Oliv.)Gagnep.

为青牛胆高效栽培提供理论依据,以2年生青牛胆扦插苗为试验材料,设置4个光照梯度(全光照、70%遮阴率、80%遮阴率、85%遮阴率),研究其对光环境变化的适应性.结果表明,青牛胆在70%遮光处理下,株高、地径、叶长、叶长宽比、叶片干重、茎干鲜重、块茎干重增加,叶宽、叶面积、比叶面积、折干率减小.而光照过强或过弱都会抑制青牛胆的正常生长.因此,70%遮阴处理较有利于青牛胆的生长.

To provide theoretical basis for efficient cultivation of Tinospora sagittata(Oliv.)Gagnep.,using the biennial cutting seedlings of Tinospora sagittata(Oliv.)Gagnep.as test materials,four light gradients(full light,70%shading rate,80%shading rate,85%shading rate)were set to study their adaptability to light environment changes.The results showed that when Tinospora sagittata(Oliv.)Gagnep.Was under the 70%light transmission treatment,the height,diameter,leaf length,leaf length to width ratio,leaf dry weight,stem fresh weight and tuber dry weight increased,and leaf width,leaf area,leaf area ratio and folded dry weight decreased.And too strong or too weak light will inhibit the normal growth of Tinospora sagittata(Oliv.)Gagnep.Therefore,the 70%shade treatment was the most beneficial for the growth of Tinospora sagittata(Oliv.)Gagnep..