丛枝菌根真菌对盐胁迫下黄瓜植株生长、果实产量和品质的影响

采用有机基质栽培,选用盐敏感黄瓜品种‘津春2号’为试验材料,研究了丛枝菌根真菌(AMF)对盐胁迫下黄瓜植株生长、矿质营养吸收、果实品质和产量的影响.结果表明:接种AMF可以有效促进黄瓜植株生长和对矿质营养的吸收,提高果实产量和改善蔬菜营养品质;盐胁迫下,黄瓜生长受到抑制,植株体内N、P、K、Cu、Zn含量减少和K+/Na+降低,果实产量和可溶性蛋白、总糖、Vc、硝酸盐含量下降;接种AMF可缓解盐胁迫对黄瓜生长的抑制作用,使植株体内N、P、K、Cu和Zn含量分别比对照提高7.3％、11.7％、28.2％、13.5％和9.9％,K+/Na+、果实产量、可溶性蛋白、总糖、Vc含量明显提高,果实硝酸盐含量显著降低.表明AMF可通过促进盐胁迫下黄瓜植株对矿质营养的吸收,促进植株生长,增强植株对盐胁迫的耐性,进而提高其产量和改善营养品质.

Effects of arbuscular mycorrhiza fungi (AMF) on the plant growth, fruit yield, and fruit quality of cucumber under salt stress

By adopting organic substrate culture, and salt-sensitive cucumber variety 'Jinchun No. 2' was used as test material, this paper studied the effects of inoculating arbuscular mycorrhiza fungi (AMF) on the plant growth, fruit yield, and fruit quality of cucumber under salt stress. AMF-inoculation could effectively promote the plant growth and nutrient uptake, and improve the fruit yield and fruit nutrient quality, compared with ordinary cultivation. Under salt stress, the plant growth was inhibited, and the plant N, P, K, Cu, and Zn contents and K+/Na+ ratio, fruit yield, and fruit soluble protein, total sugar, vitamin C, and nitrate contents decreased, while inoculation with AMF could mitigate the inhibitory effect of salt stress on the plant growth, made the plant N, P, K, Cu, and Zn contents increased by 7.3%, 11.7%, 28.2%, 13.5%, and 9.9%, respectively, and made the plant K+/Na+ ratio, fruit yield, and fruit soluble protein, total sugar, and vitamin C contents have an obvious increase and the fruit nitrate content have a significant decrease. It was suggested that AMF could promote the plant growth and nutrient uptake of cucumber under salt stress, increase the plant salt-tolerance, and improve the fruit yield and its nutrient quality.