• 中文核心期刊
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林下穴盘袋栽时长对金线莲生长和品质的影响

Effects of Seedling Tray Bagging Duration on Growth and Quality of In-forest Cultivated Anoectochilus roxburghii

    摘要
  • 摘要:
      目的  明确林下穴盘袋栽对金线莲生长和品质的影响，筛选出适宜金线莲生长的套袋时长，为金线莲科学种植、品质提升提供理论依据。
      方法  以南靖大叶金线莲为试验材料，在南靖县葛山村试验地设置7个不同套袋时长处理，以落地栽培为对照（CK），研究穴盘袋栽及不同套袋时长对金线莲生长及品质的影响。
      结果  （1）穴盘袋栽金线莲可以提高保存率、株高、叶片数、叶长、叶宽、茎节数、每节长、根数和根长，与对照相比，穴盘袋栽套袋150 d处理的保存率增加26.42%，株高增加26.47%，叶片数增加36.36%，每节长增加18.41%，平均单株鲜重增加8.32%，且存在显著差异；（2）穴盘栽培较落地栽培可显著提升金线莲可溶性糖含量，套袋时间过长不利于金线莲叶绿素合成，而对可溶性蛋白含量无显著影响；（3）金线莲穴盘栽培较落地栽培有利于总多糖、总黄酮、总生物碱和总氨基酸含量的积累与合成，分别增加11.85%、5.67%、3.70%、17.50%。但套袋时间过长则不利于金线莲总生物碱、金线莲苷、总酚含量提升，套袋150 d与套袋0 d处理的金线莲总黄酮、总生物碱、总氨基酸、总多糖含量达到的最高值之间无显著差异。
      结论  穴盘袋栽较落地栽培有利于金线莲生长和品质提升，过长的袋栽时长不利于金线莲活性成分的合成，综合考虑，穴盘袋栽以套袋时长150 d较为适宜，金线莲生长和品质较佳。

     

    Abstract:
      Objective  Effects of duration of the seedling tray bagging on the growth and quality of in-forest cultivated Anoectochilus roxburghi were analyzed.
      Method  Under tree shade in the forest, Nanjing large leaf A. roxburghii seedlings were cultivated with the conventional ground planting (CK) or utilization of the seedling tray bagging method for 7 different lengths of time at an experimental site in Geshan Village, Nanjing County. Effects of the bagging and bagging duration on the growth and quality of the plants were evaluated.
      Result  (1) The seedling tray bagging significantly increased the survival rate, plant height, leaf number, leaf length, leaf width, stem node number, node length, root number, and root length of the A. roxburghii plants. Compared with CK, 150 d bagging afforded the plants 26.42% higher on survival rate, 26.47% taller on height, 36.36% more on number of leaves, 18.41% longer on node, and 8.32% on average plant fresh weight. (2) The bagging significantly raised the soluble sugar content in A. roxburghii over direct ground planting. However, too long a bagging duration was detrimental to chlorophyll synthesis of the plant, even though no significant effect on protein content. (3) The bagging facilitated the plant accumulation and synthesis of polysaccharides, flavonoids, alkaloids, and amino acids, as shown by 11.85%, 5.67%, 3.70%, and 17.50% increases, respectively, over the conventional ground cultivation. However, being held in the bags for a prolonged period, the plants ceased to rise on the contents of total alkaloids, kinsenoside, and total phenols. The peak contents of flavonoids, alkaloids, amino acids, and polysaccharides did not significantly differ on the plants bagged for 150 d or 0 d either.
      Conclusion  The seedling tray bagging practice benefitted the growth and quality of A. roxburghii. However, prolonged bagging was not conducive to the synthesis of functional ingredients in the plant. It appeared that bagging for 150 d was optimal for the cultivation of high quality A. roxburghii in the woods.

     

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