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中国生物防治学报 ›› 2025, Vol. 41 ›› Issue (3): 617-626.DOI: 10.16409/j.cnki.2095-039x.2025.02.029

• 研究论文 • 上一篇    

基于海藻酸钠的平沙绿僵菌藻胶颗粒剂制备及性能评价

刘耀辉1,2, 沈志来1,2, 梁爽1, 黎子建2, 舒金平2, 张亚波2, 翟凤艳1   

  1. 1. 河南科技学院植物保护与环境学院, 新乡 453003;
    2. 中国林业科学研究院亚热带林业研究所, 杭州 311400
  • 收稿日期:2024-10-29 发布日期:2025-06-20
  • 通讯作者: 张亚波, 翟凤艳
  • 作者简介:刘耀辉,男,硕士研究生,E-mail: liuyaohui1008@163.com;通信作者,翟凤艳,女,博士,教授,E-mail: zhaifengyan@163.com;张亚波,博士,副研究员,ybzhang@caf.ac.cn。
  • 基金资助:
    浙江省省院合作林业科技项目(2022SY03);浙江省基础公益研究计划项目(LTGN23C16003);河南省大学生创新训练计划项目(2023CX011)

Preparation and Performance Evaluation of Metarhizium pingshaense Alginate Granules Based on Sodium Alginate

LIU Yaohui1,2, SHEN Zhilai1,2, LIANG Shuang1, LI Zijian2, SHU Jinping2, ZHANG Yabo2, ZHAI Fengyan1   

  1. 1. College of Plant Protection and Environmental Science, Henan Institute of Science and Technology, Xinxiang 453003, China;
    2. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
  • Received:2024-10-29 Published:2025-06-20

摘要: 绿僵菌Metarhizium spp.是防治地下害虫的重要生防菌资源,由于易受环境条件影响,不利于商品储藏和林间应用。为了提高绿僵菌的生存活性,本文研究了平沙绿僵菌Metarhizium pingshaense WP08菌株的藻胶颗粒剂型。通过滴定成粒法制备藻胶颗粒剂,并测定了藻胶颗粒的孢子粉浓度、颗粒直径、填充载体以及营养促活剂对藻胶颗粒剂成粒特性和产孢量的影响,同时试验了藻胶颗粒的抗紫外线性能及贮藏效果。结果表明,平沙绿僵菌WP08菌株藻胶颗粒呈现圆球状,机械抗压强度表现为优;最适条件为孢子粉浓度0.75%,填充载体8% 1250目凹凸棒土,营养促活剂0.5%大米粉,颗粒剂直径6 mm;藻胶颗粒经紫外线照射10、20和30 min后产孢量与对照组均呈现不同程度差异,其中1250目藻胶颗粒在照射30 min后产孢量为对照组的2.89倍;同时藻胶颗粒贮藏5个月后产孢效果优于WP08孢子粉和“米基”颗粒剂对照组,说明抗紫外线能力和储藏稳定性均较好。本研究制备的平沙绿僵菌藻胶颗粒剂产孢和抗逆性能良好,在地下害虫防控中前景广阔。

关键词: 平沙绿僵菌, 海藻酸钠, 营养促活剂, 交联反应, 藻胶颗粒

Abstract: Metarhizium spp. are important biocontrol fungal resources for controlling underground pests. Due to their susceptibility to environmental conditions, they are not conducive to commodity storage and forest applications. In order to improve the survival activity of M. pingshaense, this study investigated the alginate granules form of M. pingshaense strain WP08. The alginate granules were prepared by titration granulation method, and the effects of spore powder concentration, particle diameter, filling carrier, and nutrient activator on the granulation characteristics and spore production of alginate granules were determined. The UV resistance and storage effect of alginate granules were also tested. The results showed that the alginate particles of the WP08 strain of M. pingshaense were spherical in shape and exhibited excellent mechanical compressive strength; the optimum conditions were 0.75% spore powder concentration, 8% 1250 mesh attapulgite as carrier, 0.5% rice flour as nutrient activator, and 6 mm particle diameter. After 30 minutes of ultraviolet UV irradiation, the spore production yield using a carrier of 1250-mesh attapulgite increased by 2.89-fold compared to the control group. Following 5 months of storage, the spore yield of alginate granules increased by 1.31-fold, demonstrating superior storage performance relative to the WP08 spore powder and the rice based granules control groups. These results indicate that the formulation exhibits enhanced UV resistance and improved storage stability. The alginate granules prepared by the WP08 strain of M. pingshaense in this study have broad prospects for underground pest control.

Key words: Metarhizium pingshaense, sodium alginate, nutrient booster, crosslinking reaction, alginate granules

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