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不同基质配比与根瘤菌处理对花榈木苗期生长的影响
曹广华1, 陈婉颖2, 戴敏玲1, 王丛丛1, 王洪峰1, 袁丛军3, 何春梅1
1.广东省林业科学研究院;2.广州市林业和园林科学研究院;3.贵州省林业科学研究院
摘要:
为筛选适宜花榈木 Ormosia henryi 幼苗生长的育苗基质及优化根瘤菌应用技术, 研究以不同基 质配比 (进口泥炭土、 国产泥炭土、 蛭石、 珍珠岩、 黄泥) 结合根瘤菌处理为变量, 测定其苗期株高、 地径、 叶片数、 叶长叶宽、 可溶性糖、 硝态氮等生长及生理指标, 并通过隶属函数法综合评价育苗效果。 结果表明: 未接种根瘤菌时, 基质 B (进口泥炭土 ∶ 蛭石 ∶ 珍珠岩 = 2 ∶ 1 ∶ 1) 综合隶属函数值最高 (0. 61), 14 个月生株高净生长量最大 (3. 81 cm), 叶长最长 (3. 64 cm); 接种根瘤菌后, 基质 A (进口 泥炭土 ∶ 黄泥= 1 ∶ 1) 综合隶属函数值最高 (0. 76), 叶片数最多, 可溶性糖含量最高 (12. 93 mg·g -1),同时降低 CAT 与 POD 活性, 增强抗逆性。 综上, 基质 A (接种根瘤菌) 与基质 B (未接种根瘤菌) 分 别为花榈木高效育苗的最优选择。
关键词:  花榈木  基质配比  根瘤菌  苗期生长
DOI：
分类号:
基金项目:广东省省级科技计划项目 (2024A1111120014), 广州市科技支撑项目 (202307130200)。
Effects of Different Substrate Proportions and Rhizobia Treatments on Seedling Growth of Ormosia henryi
CAO Guanghua1, Chen Wanying2, DAI Minling1, WANG Congcong1, WANG Hongfeng1, YUAN Congjun3, HE Chunmei1
1.Guangdong Academy of Forestry;2.Guangzhou Institute of Forestry and Landscape Architecture, Guanzhou 510405, China;3.Guizhou Academy of Forestry
Abstract:
To identify suitable growing substrates for Ormosia henryi seedlings and optimize rhizobia application techniques, this study evaluated the effects of different substrate formulations ( imported peat, domestic peat, vermiculite, perlite, and yellow clay) combined with rhizobia inoculation on seedling growth and physiological parameters, including plant height, ground diameter, leaf number, leaf length and width, soluble sugar content, and nitrate nitrogen content. The seedling cultivation efficacy was comprehensively assessed using the membership function method. Results indicated that without rhizobia inoculation, substrate B ( imported peat ∶ vermiculite ∶ perlite = 2 ∶ 1 ∶ 1) achieved the highest comprehensive membership function value (0. 61), along with the maximum net growth in plant height of 14-month-old seedlings (3. 81 cm) and the longest leaf length (3. 64 cm). When rhizobia were inoculated, substrate A (imported peat ∶ yellow clay = 1 ∶ 1) exhibited the highest comprehensive membership function value (0. 76), the greatest leaf number, the highest soluble sugar content (12. 93 mg·g -1 ), reduced activities of catalase (CAT) and peroxidase (POD), and enhanced stress resistance. In conclusion, substrate A (with rhizobia inoculation) and substrate B (without rhizobia inoculation) are the optimal choices for efficient seedling cultivation of O. henryi. This study provides technical and methodological references for high-yield seedling cultivation of O. henryi.
Key words:  Ormosia henryi Prain  Substrate proportion  Rhizobial treatment  Seedling growth