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Response of alfalfa growth to arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria under different phosphorus application levels
AMB Express ( IF 3.7 ) Pub Date : 2020-11-03 , DOI: 10.1186/s13568-020-01137-w
Junying Liu 1 , Xuanshuai Liu 1 , Qianbing Zhang 1 , Shengyi Li 1 , Yanliang Sun 1 , Weihua Lu 1 , Chunhui Ma 1
Affiliation  

Alfalfa (Medicago sativa L.) is an important forage legume in farming and animal husbandry systems. This study assessed the effects of arbuscular mycorrhizal fungi (AMF) and phosphate-solubilizing bacteria (PSB) on alfalfa growth under different phosphorus application levels. In this experiment, a complete randomized block design was used. The following four bacterial applications were used: inoculation of Funneliformis mosseae (Fm), inoculation of Bacillus megaterium (Bm), inoculation of mixed species (Fm × Bm) and noninoculation treatment (CK). Phosphorus (P) treatment was applied at the following four levels: 0 mg kg−1 (P0), 50 mg kg−1 (P1), 100 mg kg−1 (P2) and 150 mg P kg−1 (P3). The results showed that with the increase in phosphorus application, each index increased first and then decreased. The J2 treatment was significantly greater than the J0 treatment (P < 0.05) under the same bacterial treatment. In each cropping period the difference in each index to alfalfa was extremely significant under J, P treatment and J × P interactive treatment (P < 0.01). The indexes were compared by membership function. The priority order was as follows: J3P2 > J1P2 > J3P1 treatment. Therefore, when phosphorus was applied at 100 mg kg−1, the mixed inoculation of Fm × Bm was optimal, benefitting mycorrhiza growth and the production performance of alfalfa.



中文翻译:

不同施磷水平下紫花苜蓿生长对丛枝菌根真菌和解磷菌的响应

紫花苜蓿(Medicago sativa L.)是农牧系统中重要的豆科牧草。本研究评估了不同施磷水平下丛枝菌根真菌 (AMF) 和解磷菌 (PSB) 对紫花苜蓿生长的影响。在本实验中,使用了完全随机区组设计。使用了以下四种细菌应用:Funneliformis mosseae (Fm) 的接种、巨大芽孢杆菌(Bm) 的接种、混合物种的接种 (Fm × Bm) 和非接种处理 (CK)。磷 (P) 处理以以下四个水平进行:0 mg kg -1 (P 0 )、50 mg kg -1 (P 1 )、100 mg kg-1 (P 2 ) 和 150 mg P kg -1 (P 3 )。结果表明,随着施磷量的增加,各项指标先升高后降低。相同细菌处理下J 2处理显着大于J 0处理(P  < 0.05)。在J、P处理和J×P交互处理下,各种植期对紫花苜蓿各项指标的差异极显着(P  < 0.01)。指标通过隶属函数进行比较。优先顺序如下: J 3 P 2  > J 1 P 2  > J 3 P1治疗。因此,施磷量为100 mg kg -1时,Fm×Bm混合接种效果最佳,有利于菌根生长和苜蓿的生产性能。

更新日期:2020-11-03
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