不同灌水量对忍冬生长发育及金银花质量的影响

Effects of irrigation volume on growth and quality of Lonicera japonica

目的:研究不同灌水量对忍冬生长发育及金银花药材质量的影响。方法:在盆栽忍冬第一茬花开之前,进行土壤相对含水量100%,80%,50%,30%的灌水量处理,考察忍冬枝条、叶片的生长及金银花的产量及质量情况。结果:随着灌水量的减少,枝条的伸长及节位的增加均受到抑制,金银花产量降低,灌水量为土壤相对含水量的80%处理对花蕾中绿原酸含量影响不大,其他处理均降低;30%处理的叶片含水量比对照显著降低,但其比叶重(SLW)比对照显著增加;30%和50%处理的叶片的叶绿素含量均升高;各处理的叶绿素a/b均显著降低。80%和50%处理的叶片可溶性糖含量显著升高;30%处理比50%处理的叶片可溶性蛋白含量升高;30%处理的脯氨酸含量极显著升高。结论:适当减少灌水量(土壤相对含水量保持为80%)不会导致金银花内在质量的下降,但会减少干重的积累,因此在金银花的生产实践中,要加强水分管理。

Objective： To study the effects of irrigation volume on the growth and quality of Lonicera japonica. Method： Different volume of irrigation water was applied to the potted L. japonica before the first florescence of honeysuckle in order to keep the relative moisture content of the soil as 100%, 80%, 50%, 30%, and observe the growth and development of shoot and leaves, yield and quality of honeysuckle. Result： As the of irrigation volume was reduced, the intemedal elongation of shoot and the increase of the knot were restrained, and the yield of honeysuckle dropped. But the content of chlorogen acid in the buds treated by 80% irrigation volume was not affected, while that of the other treatment all decreased. The moisture contents of the leaves treated by 30% irrigation volume was significantly lower than that of the CK,while the specific leaf weight （SLW） increased significantly comparing to the CK. The content of chlorophyl in the leaves of 50% and 30% increased,while the ratio of chlorophyl A and B fell significantly. The content of dissoluble suger in the leaves of 80% and 50% irrigation volume was much higher than that in the CK. The results also showed that, the content of dissoluble protein in the leaves of 30% irrigation volume increased comparing with that in 50%, and the content of praline in leaveas of 30% irrigation volume increased significantly. Conclusion： Using less irrigation volume（keeping 80% of relative moisture content of the soil） does not affect the quality of honeysuckle, but decreased dry weight of honeysuckle. It is necessary to take irrigation management during cultivation of honeysuckle.