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以低磷胁迫和平衡施肥处理的番茄根系及根际土壤为研究对象,采用根系分析系统、稀释平板法、PCR-DGGE等分析技术,研究低磷胁迫对番茄根系生长、根际土壤生物学特性以及细菌多样性的影响。结果表明,低磷胁迫导致番茄根系总根长、总根表面积、总根体积和根尖数减少;导致根际土壤中可培养微生物(细菌、真菌和放线菌)数量、酶活性、微生物生物量以及细菌的多
The effects of low-P stress on root growth and rhizosphere soil biological characteristics of tomato were studied using root analysis system, dilution plate method, PCR-DGGE and other analytical techniques under low phosphorus and balanced fertilization treatments. As well as the impact of bacterial diversity. The results showed that the total root length, the total root surface area, the total root volume and the number of apical roots of tomato root system were decreased due to the low-phosphorus stress. The number of rhizosphere soil microorganisms (bacteria, fungi and actinomycetes), enzyme activity, microbial biomass The amount of bacteria and more