中国生态农业学报2018，Vol.26Issue(5)：684-692,9.DOI:10.13930/j.cnki.cjea.170934
黄瓜和西芹间作对黄瓜生长及枯萎病发生的影响
Influence of cucumber-celery intercropping on growth and fusarium wilt of cucumber
摘要
Abstract
Cucumber wilt is a soil disease that is very prevalent in the production and cultivation of cucumber. The disease is highly difficult to prevent and cure. A number of studies have shown that crops intercropping was one of the most effective methods of re-ducing the occurrence of plant soil disease.Also celery(Apium graveolens L.)has been proved to be a plant with high allelopathy. To explore application of allelopathic effect of celery for cucumber fusarium wilt control, we conducted an experiment of celery and cucumber (Cucumis sativus L.) intercropping. In the experiment, three planting patterns were set, which were cucumber-celery intercropping, celery monoculture and cucumber monoculture. The vegetative and reproductive growths of cucumber were investi-gated. The allelopathic effect of soil extracts of different planting patterns on cucumber fusarium wilt were analyzed through meas-urement of colony diameter of Fusaium oxysporum f.sp.cucumerinum cultivated on PDA medium.Meantime,the effect of allelopa-thy on cucumber wilt and the disease prevention of cucumber-celery intercropping in field was studied through field inoculation of F. oxysporum.The results showed that intercropping enhanced vegetative growth of cucumber,lowered node of the first female flower bud and increased the number of female flowers blooming within the node range from one to thirty, which laid a good foundation for high yield of cucumber.The colony diameter of F.oxysporum in PAD medium with soil extracts under cucumber-celery intercrop-ping was smallest, which was significantly different from that under monoculture of celery or cucumber (P < 0.05). There was a cer-tain degree of inhibiting effect of ethanol, acetone, and aqueous extracts of soils under cucumber-celery intercropping on cucumber wilt. Moreover, allelopathy-inhibiting effect was 38.11%-75.90% of soil extracts under cucumber-celery intercropping. For three extract agents, colony diameter of ethanol extract was smallest, which reached a very significant level when compared respectively with acetone and distilled water (P < 0.01). Soils of different planting patterns were used to plant cucumber, cucumber fusarium wilt was inoculated during the first true leaf stage. The results showed that in soil of cucumber-celery intercropping, disease index of cu-cumber wilt reduced with control efficiency reaching 57.03%-72.15%. Therefore, allelopathy-inhibiting effect of cucumber-celery intercropping on cucumber wilt was obvious, which provided theoretical basis for the prevention and control of cucumber soil-borne diseases through intercropping with celery.关键词
黄瓜和西芹间作/黄瓜枯萎病/土壤浸提液/化感作用/抑病效果Key words
Cucumber-celery intercrop/Cucumber fusarium wilt/Soil extract/Allelopathy/Disease control efficiency分类
植物保护学引用本文复制引用
秦立金,曹巨峰,韩伟秋,云兴福..黄瓜和西芹间作对黄瓜生长及枯萎病发生的影响[J].中国生态农业学报,2018,26(5):684-692,9.基金项目
国家自然科学基金项目(31160100)和内蒙古自治区应用技术研究与开发项目(201602050)资助 This study was founded by the National Natural Science Foundation of China(31160100)and the Application Technology Research and De-velopment Project of Inner Mongolia Autonomous Region(201602050). （31160100）
