采用盆栽受控实验法,选用“乌牛早”为试验材料,研究丛枝菌根（AM）对盐胁迫下茶树生长、矿质营养的吸收、茶树叶片组织含水量和茶叶品质的影响。结果表明：接种丛枝菌根真菌（AMF）可以有效促进茶树的生长和对矿质营养的吸收,降低水分饱和亏、改善茶树生长质量和茶叶品质;接种AMF可使茶树生长受到的抑制作用得到有效缓解,表现为茶树体内N、P、K、Mg、Fe和Zn含量分别比对照提高7.8%、32.2%、20.0%、22.6%、10.2%和9.4%,K+/Na+明显提高。表明AMF可通过促进盐胁迫下茶树对矿质营养的吸收,促进茶树生长,增强茶树对盐胁迫的耐性,进而提高茶叶产量和改善其营养品质。
By adopting mesocosm experiment, Camellia sinensis (L.) O. Kuntze var. Wuniuzao tea plant was used as test material. This paper studied the effects of inoculating arbuscular mycorrhizal fungi (AMF) on the growth of tea plant, the absorption of mineral nutrition, the water content in leaf tissue and the quality of tea under salt stress. AMF-inoculation could effectively promote growth and nutrient uptake of tea plant, deccrese the water saturation deficit and improve the growth quality of tea plant and the quality of tea, compared with ordinary cultivation. Under salt stress, the growth of treated tea plant was inhibited, and N, P, K, Mg, Fe and Zn contents in the treated tea plant, K+/Na+ ratio and fruit yield were all decreased, while inoculation with AMF could mitigate the inhibitory effect of salt stress on tea plant growth, made the N, P, K, Mg, Fe, Zn contents in the tea plants were increased by 7.7%, 31.2%, 20.2%, 23.8%, 9.4% and 9.5%, respectively, comared with the control tea plant, and made K+/Na+ ratio of the plant increased obviously. It was suggested that AMF could promote the plant growth and nutrient uptake of tea plant under salt stress, increase the plant salt-tolerance, and improve the tea yield and nutrient quality.
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