氯化苦土壤熏蒸防治烟田杂草及土传病害效果研究
Chinese Agricultural Science Bulletin(2010)
Abstract
针对烟田大面积轮作难、土传病害防治难等现状,为了探索植烟土壤处理新途径,研究了氯化苦土壤熏蒸防除杂草和烟田土传病害的效果。以99.5%氯化苦原液采用注射法按不同用量处理土壤,结果表明:苗床使用不同用量氯化苦熏蒸对苋菜、马齿苋、莎草均有极显著防效,但对牛筋草无效;接种条件下,烟苗移栽98天后,不同用量处理对黑胫病的的防效为68.00%~84.29%,对根结线虫病的防效为80.66%~92.49%;大田条件下,移栽104天,后不同用量处理对黑胫病的防效为75.16%~88.15%;移栽165天后,对根结线虫病的防效为53.60%~65.70%,并能明显改善烟株生物学性状。因此,氯化苦土壤熏蒸是一种有效解决烟草土传病害的方法。氯化苦熏蒸不能防除牛筋草的结论尚未见报道。
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Key words
indica,root-knot nematode disease,fumigation,black shank disease,tobacco,chloropicrin
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