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特色森林蔬菜抱茎菝葜播种育苗试验初报

Experiment of the Seeding and Cultivation of Smilax ocreata, Characteristic Forest Vegetable Smilax ocreata

  • 摘要: 抱茎菝葜Smilax ocreata 是德宏州当地高端野生森林蔬菜,市场需求日益增加,发展潜力巨大。为提高其育苗技术水平,为人工规模化栽培提供种苗基础,本研究从育苗基质、采种母树年龄、种子贮藏时间、移苗根系处理4个方面开展抱茎菝葜育苗试验研究。结果表明:在育苗基质试验中,红壤土基质种子发芽率达到81.00%,江沙基质次之,为76.33%;在不同采种母树年龄播种试验中,6 年生的母树种子发芽率达81.83%,4 年生母树种子发芽率最低,仅为36.83%;在不同贮藏时间处理试验中,随采随播的种子发芽率最高,达76.33%,随着贮藏时间的延长,种子发芽率越低;移苗前对根系进行适当修剪,有利于菝葜幼苗生长发育,其最高分蘖株的苗高和所有分蘖株高生长量分别达到了22.22 cm、42.01 cm,最高分蘖株的地径和所有分蘖株地径生长量分别达2.37 cm、5.70 cm,分蘖数和叶片数最高分别达3.33个、13.97片。抱茎菝葜的播种育苗方式如下:采摘6 年生以上母树种子,选择洁净江沙或红壤土作为育苗基质,随采随播。在移栽时,修剪过长的主根,有助于提高育苗成活率和苗木生长量。

     

    Abstract: Smilax ocreata, a locally high-level wild forest vegetable in Dehong Dai and Jingpo Autonomous Prefecture, confronts an increasing market demand with great development potential. This study aims to enhance techniques of its seedling cultivation and provide a foundation for large-scale artificial cultivation. The seeding substrate, the age of seed trees collected, seed storage time and root treatment before transplantation for S. ocreata are conducted in seeding and seedling cultivation experiments. The results indicated that the rate of seed germination in red soil was the highest, reaching 81.00%, followed by 76.33% in river sand, the rate of seed germination for 6-year-old seed trees was up to 81.83%, while the rate of 36.83% for 4-year-old seed trees was the lowest. The highest germination rate of 76.33% was observed when seeds were sown immediately after collection, the longer the storage time, the lower the germination rate. Appropriate root pruning before transplantation favored the growth and development of S. ocreata seedlings. The maximum height of the single tillering plant and the cumulative height of all tillering plants reached 22.22 cm and 42.01 cm, respectively, the ground diameter of the former and the cumulative ground diameter increment of the latter reached 2.37 cm and 5.70 cm, respectively, with tiller number and leaf number being 3.33 and 13.97, separately. In conclusion, collecting seeds from trees older than 6 years, using clean river sand or red soil as the seedling substrate, sowing seeds immediately after collection, and pruning long taproots during transplanting are favorable for enhancing the survival rate of seedling and the increment.

     

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