摘要
为了明确土壤中氯嘧磺隆对马铃薯和甜菜生育的影响,分别在苗期和生育盛期向盆栽土壤中灌施不同浓度的氯嘧磺隆溶液,调查作物生育产量。结果表明:供试的马铃薯和甜菜苗期耐药能力弱,生育盛期耐药能力增强;马铃薯耐药能力比甜菜强。马铃薯临界浓度苗期为0.017 a.i.mg/kg土,生育盛期约为0.071 a.i.mg/kg土;甜菜苗期至少小于0.0002 a.i.mg/kg土,生育盛期约为0.011 a.i.mg/kg土。马铃薯苗期抑制产量EC50值约为0.065 a.i.mg/kg土,生育盛期约为0.200 a.i.mg/kg土;甜菜苗期因植株死亡未得到数据,生育盛期约为0.014 a.i.mg/kg土。
Various concentrations of chlorimuron-ethyl were applied in pot planted to potato and sugar beet at seedling and full-growing stages, and the growth and yield of both crops were investigated in order to understand the effects of chlorimuron-ethyl on yields of potato and sugar beet. Chlorimuron-ethyl tolerance was weaker at seedling stage than full-growing stage for both potato and sugar beet, and potato was more tolerant as compared with sugar beet. As for the critical concentration of potato, it was 0.017 a.i. mg/kg soil at seedling stage and 0.071 a.i. mg/kg soil at full-growing stage. For sugar beet, it was at least 0.0002 a.i. mg/kg soil at seedling stage （no sugar beet was survived when the concentration was more than 0.0002 a.i. mg/kg soil） and 0.011 mg/kg soil at full growing stage. EC50 for yield inhibition of potato was 0.065 a.i. mg/kg soil at seedling stage and 0.200 a.i. mg/kg soil at full-growing stage. Because all sugar beet plants were died at seedling stage, no data of ECho were available for seedling stage. The value was 0.014 a.i. mg/kg soil at full growing stage.
出处
《中国马铃薯》
2013年第3期140-143,共4页
Chinese Potato Journal
基金
农业部948项目(2009-Z21)
黑龙江省青年基金(QC2009C112)
农村领域国家科技计划部分研究内容(2012BAD06B00)
公益性行业(农业)科研专项经费资助(201303126)
关键词
氯嘧磺隆
马铃薯
甜菜
临界浓度
EC50
生育
产量
chlorimuron-ethyl
potato
sugar beet
critical concentration
EC50
growth
yield
