Effects of Fenaminosulf on Growth of Pepper (Capsicum annuum L.), Microbial Communities and Enzymatic Activities of the Soil Infested with Fusarium oxysporum
Effects of Fenaminosulf on Growth of Pepper (Capsicum annuum L.), Microbial Communities and Enzymatic Activities of the Soil Infested with Fusarium oxysporum
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DOI：
10.36468/pharmaceutical-sciences.spl.190
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发表时间：
2021
影响因子：
0.5
通讯作者：
J. Ren;J. Wang;J. Cai
中科院分区：
文献类型：
--
作者：
J. Ren;J. Wang;J. Cai
辣椒枯萎病是贵州省辣椒生产中常见的病害，农业生产中常用苯胺磺防治。为评价苯氨基磺对辣椒持续生产的影响，采用盆栽试验研究了93 d苯氨基磺对辣椒生长的影响。土壤微生物群落和酶活性的变化。四种治疗方法：在土壤中接种病原体一周后T1播种，T2播种和土壤中喷洒灭草胺（以推荐剂量）在土壤中接种病原体后一周，T3-辣椒幼苗前四至五叶期土壤接种病原菌和T4-土壤淋施灭草胺（推荐剂量）在辣椒幼苗的前4 ~ 5叶期接种病原菌后1周，建立了辣椒幼苗的抗病原菌能力。结果表明，施用苯胺磺的T2和T4处理明显提高了辣椒成活率，部分抑制了辣椒的生长发育，显著降低了土壤细菌数量，但对土壤过氧化氢酶、脲酶和碱性磷酸酶活性无类似影响。根据植株生长势较强、土壤细菌和放线菌数量较多、过氧化氢酶和碱性磷酸酶活性较高等特点，T4策略在辣椒枯萎病高发区的辣椒生产上是合理的。
Pepper wilt disease is common in the production of pepper in Guizhou province, China and fenaminosulf is often used to prevent its occurrences in agricultural practices. To estimate the effects of fenaminosulf on the sustainable pepper production, a pot experiment for 93 d was conducted to investigate the effects of fenaminosulf on the growth of pepper (Capsicum annuum L.), microbial communities and enzyme activities of the soil infested with phytopathogen Fusarium oxysporum. Four treatments: T1-seeding a week after pathogen inoculation in the soil, T2-seeding and soil drenching of fenaminosulf (at recommended dose) a week after pathogen inoculation in the soil, T3-pathogen inoculation in the soil at the first four to fiveleaf stage of pepper seedling and T4-soil drenching of fenaminosulf (at recommended dose) a week after pathogen inoculation in the soil at the first four to five-leaf stage of pepper seedling were established. The studies showed that T2 and T4 of fenaminosulf application obviously improved pepper survival rate, partially inhibited plant growth and development and significantly reduced soil bacterial quantity, but had no similar effects on the soil activities of catalase, urease and alkaline phosphatase. On the basis of stronger growth potential of plant, larger quantities of bacteria and actinomycetes and higher activities of catalase and alkaline phosphatase in the soil, T4 strategy might be reasonable for the production of pepper in the field where pepper wilt disease usually occurs.