摘要
根结线虫是威胁农业生产的重要病原物。在田间研究了甘蓝生物熏蒸对番茄根结线虫的防治效果,并利用悬浮离心法分离土壤线虫,评价生物熏蒸对土壤线虫群落的影响。结果表明:甘蓝熏蒸可以降低根结线虫对番茄的危害,在定植60和90 d时防治效果分别达58.6%和45.8%,防效与化学农药噻唑膦相当。此外生物熏蒸可以增加土壤中的食细菌类线虫和捕食/杂食类线虫数量,降低土壤食真菌类线虫和植物寄生类线虫数量,增加土壤自由生活线虫丰富度指数MI,降低植物寄生线虫成熟度指数PPI和PPI/MI指数,说明甘蓝生物熏蒸对植物寄生线虫有一定的抑制作用,降低了土壤受到干扰的次数和强度,对土壤生态环境起到了积极作用。研究结果表明甘蓝生物熏蒸可以有效防治蔬菜根结线虫,是一种对生态环境友好的绿色防控技术。
Root-knot nematodes are important pathogens threatening agricultural production.The control effects of cabbage biofumigation on tomato root-knot nematodes in the field were studied,the soil nematodes were isolated by the suspended centrifugation method and the influence of biofumigation on the soil nematode community was evaluated.The results showed that cabbage biofumigation reduced the damage of root-knot nematode to tomato.The control efficacy of biofumigation was 58.6%and 45.8%respectively at 60 and 90 d post transplantation,which was equivalent to that of the chemical pesticide fosthiazate.In addition,biofumigation resulted in the increase of the number of bacterivores nematodes and omnivore predator nematodes,and reduction of the number of fungivores nematodes and parasitic nematodes.Moreover biofumigation increased the maturity index(MI)of soil free-living nematodes,reduced the plant parasite index(PPI)and PPI/MI.It is indicated that cabbage biofumigation presents some inhibitory effect on plant parasitic nematodes,reduces the number and intensity of soil interference,and plays a positive role in the soil ecological environment.The research results show that cabbage biofumigation may effectively prevent and control vegetable root-knot nematodes,which is an environmentally friendly green prevention and control technology.
作者
金娜
王学艳
刘倩
彭德良
彭焕
简恒
JIN Na;WANG Xue-yan;LIU Qian;PENG De-liang;PENG Huan;JIAN Heng(Department of Horticulture,Beijing Vocational College of Agriculture,Beijing 102442;Chaoyang District Social Insurance Fund Management Center,Beijing 100020;College of Plant Protection,China Agricultural University,Beijing 100193;Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193)
出处
《生物技术通报》
CAS
CSCD
北大核心
2021年第7期156-163,共8页
Biotechnology Bulletin
基金
北京农业职业学院科技创新项目(XY-YF-21-02)
国家重点研发计划(2017YFD0201106、2016YFD0201003)。
关键词
根结线虫
生物熏蒸
线虫群落
甘蓝
root-knot nematodes
biofumigation
nematode community
cabbage
