本试验以多花黄精为研究对象，探究施加不同浓度硅肥处理对多花黄精抗逆性酶活性、光合参数、黄精多糖含量等生理指标和株高、茎粗等生长状态的影响。结果表明，在一定范围内，硅肥处理能增加多花黄精的抗逆性酶活性，降低MDA含量，提高净光合速率，促进株高、茎粗的增加和黄精多糖的积累。处理硅浓度为8 mmol·L-1时，最适于抗氧化酶活性的增加，SOD、POD、CAT活性分别比CK组增加41.3%、366.0%、43.8%。处理硅浓度为2 mmol·L-1时，最能促进光合作用，净光合速率为CK组的1.01倍。处理硅浓度为6 mmol·L-1时最利于黄精多糖的积累，黄精多糖含量比CK组增加了35.1%。施硅浓度高于或低于最适浓度时，各项指标均呈下降趋势。不同质量参数的最适浓度不同，在实际生产中，应根据种植环境和需求，选择最适宜的硅处理浓度。
目录
摘要I
关键词I
AbstractI
引言
引言1
1 材料与方法1
1.1 试验材料1
1.2 试验设计1
1.3 测定指标及方法2
1.3.1 生理指标测定2
1.3.2 光合参数测定3
1.3.3 根茎干、鲜重和黄精多糖的测定3
1.4 数据分析3
2 结果与分析3
2.1 施加硅肥对多花黄精根茎抗氧化酶活性和可溶性蛋白含量影响3
2.2 施加硅肥对多花黄精光合参数和光合色素影响4
2.3 施加硅肥对多花黄精根茎干、鲜重和活性成分的影响5
3 讨论 5
3.1 施加硅肥对多花黄精根茎抗氧化酶活性影响5
3.2 施加硅肥对多花黄精根茎可溶性蛋白含量影响6
3.3 施加硅肥对多花黄精光合参数和光合色素影响6
3.4 施加硅肥对多花黄精根茎干、鲜重和活性成分的影响6
4 结论7
致谢7
参考文献7
硅肥对多花黄精生长及质量影响研究
Title Effect of silicon fertilizer on the growth and quality of  *51今日免费论文网|www.51jrft.com +Q: &351916072& 
Polygonatum cyrtonema
Student majoring in Traditional Chinese medicine GUO Huijun
Tutor WANG Kangcai
Abstract：In this study, Polygonatum cyrtonema is used as the research object to explore the effects of applying different concentrations of silicon fertilizer on physiological indexes such as activities of stresstolerant enzymes, photosynthetic parameters, content of Polygonapolysaccharose and the growth states such as plant height and stem diameter. The results showed that, within a certain range, the treatment with silicon fertilizer could increase activities of stresstolerant enzymes, reduce the content of MDA, increase the net photosynthetic rate, promote the increase of plant height, stem diameter and the accumulation of Polygonapolysaccharose. When the concentration of silicon was 8 mmolL1, it was most suitable for the increase of activities of stresstolerant enzymes. Compared with CK group, the activity of SOD, POD and CAT increased by 41.3%, 366.0% and 43.8% respectively. When the concentration of silicon was 2 mmolL1, the photosynthetic rate was 1.01 times higher than that of CK group. When the silicon concentration was 6 mmolL1, it was most beneficial to the accumulation of Polygonapolysaccharose, and the content of Polygonapolysaccharose increased by 35.1% compared with that of CK group. When the concentration of silicon application is higher or lower than the optimum concentration, all the indexes show a downward trend. The optimum concentration of different quality parameters is different. In actual production, the optimum silicon concentration should be selected according to the planting environment and requirements.
Key words: silicon；Polygonatum cyrtonema；Polygonapolysaccharose；activities of stresstolerant enzymes

原文链接：http://www.jxszl.com/yxlw/zyx/607324.html