摘要
【目的】研究有效控制十字花科作物根肿病的防控措施,控制十字花科作物根肿病的发生和流行。【方法】通过q PCR检测方法,测定土壤中根肿病菌含量,结合田间发病株率综合分析4种化学农药及组合、3种土壤改良剂和4种作物轮作对十字花科作物根肿病的控病效果。【结果】明迪和福帅得处理的油菜根肿病发病株率较低,分别为73.33%和77.42%,明迪处理的土壤中病原菌含量为1.7×10~7copy number/g,显著低于对照;抗重茬菌剂、复合微生物菌剂和有机硅肥3种土壤改良剂处理的油菜根肿病发病株率和土壤中根肿病菌含量均比对照低;轮作大蒜的土壤中病原菌含量最低,为2.2×10~7copy number/g,与对照和轮作大麦、蚕豆、马铃薯的土壤中病原菌含量有显著差异。【结论】明迪、福帅得、微生物菌剂及轮作大蒜对根肿病有一定控病效果,在生产中根据病害发生程度,集成"轮作+土壤调理+清理病根+化学药剂防控"技术,达到持续控病的目的。
【Objective】The purpose of the present study was to explore the control measures which could effectively prevent clubroot disease and control the incidence and epidemic of this disease.【Method】The control effect of 4 chemical fungicides,3 soil amendments and 4 crops rotation were investigated by testing the pathogen content in field with q PCR and surveying disease incidence of rape.【Result】The disease incidence of oilseed rape treated with Mingdi and Fushuaide was low,respectively 73.33 % and 77.42 %.The pathogen quantity in soil treated with Mingdi was 1.7 × 10^7 copy number/g,which was significantly lower than control.The disease incidences of oilseed rape treated with anti-continuous cropping agent,complex microbial community and organic silicon fertilizer were lower than control and the pathogen quantity of those 3 kinds of soil amendment was significantly lower than control.The pathogen quantity with 2.2 × 10^7 copy number/g in the garlic rotation soil was the lowest and significantly different with that in the soil of control,barley,broad bean and potato rotation.【Conclusion】Mingdi,Fushuaide,complex microbial community and garlic rotation had a certain control effect on clubroot.According to the degree of disease in the production,it would achieve the goal of continuously controlling the disease to integrate‘rotation ＋ soil regulation ＋ diseased root clean ＋ chemical fungicide control＇technologies.
作者
白亭亭
杨佩文
李向东
杨子林
林兴华
毕云青
裴卫华
杨群辉
彭荣珍
杨明英
BAI Ting-ting;YANG Pei-wen;LI Xiang-dong;YANG Zi-lin;LIN Xing-hua;BI Yun-qing;PEI Wei-hua;YANG Qun-hui;PENG Rong-zhen;YANG Ming-ying(Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Yunnan Kunming 650205 , China;Plant Protection and Inspection Station of Lincang, Yunnan Lincang 677000, China)
出处
《西南农业学报》
CSCD
北大核心
2018年第4期731-735,共5页
Southwest China Journal of Agricultural Sciences
基金
云南省科技惠民计划(2014RA061)
云南省现代农业油菜产业技术体系项目
