【摘要】 【目的】研究不同微生物有机肥对连作马铃薯农艺性状、植株抗逆生理及根系形态的影响。【方法】通过盆栽试验，设置5个处理（对照：CK，有机肥：F，细菌有机肥：BF，真菌有机肥：FF，细菌+真菌复合微生物有机肥：B-FF）研究微生物有机肥对马铃薯的农艺性状、叶绿素含量（SPAD值）、SOD（超氧化物歧化酶）、POD（过氧化物酶）、CAT（过氧化氢酶）、MDA（丙二醛）和根系形态的影响。【结果】B-FF处理显著促进了马铃薯地上部干质量的增加（P≤0.05），相较于CK增加8.38%;BF、FF和B-FF处理的SPAD值显著高于CK和F;B-FF处理的SOD、CAT和POD酶活均显著高于其他处理，较CK分别增加48.63%、25.20%和21.43%;B-FF、FF、BF处理显著降低了MDA含量，较CK分别降低7.83%、6.73%和5.62%;B-FF、FF、BF处理的马铃薯根表面积和根尖数显著高于CK和F处理。【结论】微生物有机肥显著促进了马铃薯地上部干质量和SPAD值的增加，提高了马铃薯的根表面积和根尖数，改善了植株抗逆生理，B-FF处理效果最好。更多还原

【Abstract】 【Objective】 The study aimed to explore the effect of different microbial organic fertilizers on growth characters,physiological stress-resistance and root morphology of continuously cropped potato.【Method】 Five treatments were set up in pot experiment as follows: control,CK;organic fertilizer,F;bacterial organic fertilizer,BF;fungal organic fertilizer,FF;bacterial + fungal compound microbial organic fertilizer,B-FF. The effect of microbial organic fertilizer on agronomic characters,chlorophyll content(SPAD value),SOD(superoxide dismutase),POD(peroxidase),CAT(catalase),MDA(malondialdehyde) and root morphology of potato were determined.【Result】 B-FF treatment significantly increased the above-ground dry weight of potato,which was 8. 38% higher than that of CK. The SPAD values of BF,FF and B-FF were significantly higher than those of CK and F. The SOD,CAT and POD enzyme activities of B-FF treatment were significantly higher than those of other treatments,which increased by 48. 63%,25. 20% and 21. 43% compared to CK,respectively. Compared with CK,the treatments B-FF、FF、BF significantly decreased MDA content,which decreased by 7. 83%,6. 73% and 5. 62%,respectively. The root surface area and root tip number of potato treated with B-FF、FF、BF were all significantly higher than those of CK and F.【Conclusion】 Microbial organic fertilizer significantly promoted the above-ground dry weight and chlorophyll SPAD value of potato,increased the root surface area and root tip number,and improved stressresistance physiology of the plant,in which the treatment B-FF had the best effect.更多还原