辣椒间作茴香促生和控制辣椒疫病发展动态研究  

Growth Promotion and Development and Dynamics of Phytop-thora capsicum Control under Fennel and Pepper Intercropping

作　　者：李颖 何依依 孙俊薇 张治萍 梅馨月[1] 王海宁[1] 刘屹湘[1] 李作森 LI Ying;HE Yiyi;SUN Junwei;ZHANG Zhiping;MEI Xinyue;WANG Haining;LIU Yixiang;LI Zuosen(Key Laboratory of Agrobiodiversity and Pest Management,Ministry of Education,Yunnan Agricultural University,State Key Laboratory for Conservation and Utilization Bio-Resources in Yunnan,Kunming 650201,China;College of Tobacco Science,Yunnan Agricultural University,Kunming 650201,China)

机构地区：[1]云南农业大学,农业生物多样性与病虫害控制教育部重点实验室,云南生物资源保护与利用国家重点实验室,云南昆明650201 [2]云南农业大学烟草学院,云南昆明650201

出　　处：《云南农业大学学报（自然科学版）》2022年第6期932-939,共8页Journal of Yunnan Agricultural University:Natural Science

基　　金：国家自然科学基金项目(31972328,31601682);云南省农业基础研究联合专项(2018FG001-046);云南省李健强专家工作站(202005AF150103);云南省科技计划中青年学术和技术带头人后备人才(202105AC160069);云南省高层次人才培养计划(YNWR-QNBJ-2020-285)。

摘　　要：【目的】研究辣椒间作茴香对辣椒疫病的影响。【方法】在云南省昆明市寻甸县设置辣椒单作及辣椒间作茴香的小区试验,比较2种模式的生物量、根系形态和酶活性差异,通过Logistic模型对2种模式的病害发生率和病情指数进行评价。【结果】辣椒间作茴香有利于茴香生长,可促进辣椒根系发育;间作模式下,辣椒的根长和根表面积极显著高于单作模式(P<0.01),2种模式的根直径和根体积也存在显著差异(P<0.05)。间作模式下,辣椒病害发生率和病情指数的渐近最大值和最大瞬时增长率显著低于辣椒单作模式(P<0.05),2种模式的初始增长率无显著差异(P>0.05),间作模式可显著延长病害发生率和病情指数达到最大增长速率的时间(P<0.05)。间作模式下,辣椒根系的超氧化物歧化酶和过氧化氢酶活性显著高于单作模式(P<0.05),但过氧化物酶活性无显著差异(P>0.05)。【结论】辣椒间作茴香可降低辣椒疫病的病害发生率和病情指数,延缓辣椒疫病暴发时间,促进根系生长,提高根系酶活性,增加辣椒抗性。[Purpose]To study the effects of pepper intercropping with fennel on Phytophthora capsici.[Methods]Pepper monoculture and pepper intercropping with fennel were set in Xundian County,Kunming City,Yunnan Province,comparing the differences of biomass,root morphology and enzyme activity between the two cropping patterns.The incidence and disease index of the two cropping patterns were evaluated by Logistic model.[Results]Pepper intercropping with fennel was beneficial to the growth of fennel and pepper root.The root length and root surface area of pep-per in intercropping pattern were extremely significantly higher than monoculture pattern(P<0.01),and there were significant differences in root diameter and root volume between two patterns(P<0.05).In intercropping pattern,the asymptotic maximum incidence and disease index and the maximum growth rate of pepper were significantly lower than pepper monoculture pattern(P<0.05),but without significant difference in initial growth rate(P>0.05).Intercropping pattern significantly delayed the time of reaching the maximum instantaneous rate.The activities of superoxide dismutase and catalase in pepper roots under intercropping pattern were significantly higher than monoculture pattern(P<0.05),but without significant difference in peroxidase(P>0.05).[Conclusion]Pepper intercropping with fennel can reduce the incidence and disease index of P.capsici,delaying the out-break time of P.capsici,promoting the growth of root system and enzyme activity of root and increas-ing the resistance of pepper.

关 键 词：间作 辣椒疫病 病情指数 病害发生率 瞬时生长速率 

分 类 号：S344.2[农业科学—作物栽培与耕作技术]