【作者】 许艳丽； 陈伊里； 司兆胜； 李兆林； 李春杰； 温广月；

【Author】 XU Yan-li CHEN Yi-li SI Zhao-sheng LI Zhao-lin LI Chun-jie WEN Guang-yue ( Northeast Institute of Geography and Agricultural Ecology, CAS, Harbin 150040, China; Northeast Agricultural University , Harbin 150030, China)

【机构】 中国科学院东北地理与农业生态研究所； 东北农业大学；

【摘要】 取北方5种作物轮作茬口和休闲土壤种植大豆、玉米、小麦、亚麻和甜菜,出苗后22天制备作物的根渗出物观察对大豆胞囊线虫(SCN)卵孵化的影响。试验表明,麦豆麦迎茬的甜菜根渗出物在后期SCN 的卵孵化率最高,豆麦米轮作茬的大豆根渗出物9d后SCN的卵孵化率明显高于其他作物,米豆米茬口的玉米根渗出物SCN的卵孵化率较高,豆麦豆迎茬甜菜根渗出物SCN的卵孵化率明显高于所有供试作物,12年大豆连作茬甜菜从一开始卵孵化率就高于对照和其他4种作物,休闲区的5种作物根渗出物也有对SCN卵孵化的刺激作用。更多还原

【Abstract】 The effects of 5 crops on 5 rotation systems and fallow soil on egg hatching of Heterodera glycines were determined under laboratory conditions. Crops tested included soybean, corn, wheat, flax and sugar beet. 5 rotation systems were wheat-soybean-wheal ( WSW), soybean-wheat-corn ( SWC), corn-soybean-corn ( CSC ), soybean-wheal-soybean (SWS), continuous soybean (SSS. . . S 12 years). Root diffusate from sugar beet on WSW , SWS and SSS. . . S 12 years caused greater hatching of H. glycines than other crops on .same rotation system. Diffusate from soybean root on SWC and corn root on CSC stimulated the egg hatching more than any of the other crops on same rotation system. Root diffusate from 5 crops on fallow soil also stimulated egg hatching of H. glycines.更多还原