Effects of Different Fumigation Years of Dazomet on Tobacco Growth and Bacterial Wilt Disease
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摘要: 土壤熏蒸措施可有效减少土壤有害微生物的数量，对土传病害起到一定的防治作用，然而不同年限熏蒸的作用效果有待进一步探索.本研究通过大田小区试验，比较棉隆连续熏蒸2年、1年和没有熏蒸的处理对烟草生长和青枯病发生的影响.研究结果表明，棉隆连续2年熏蒸处理对烟株生长的促进作用更佳，能显著提高烟株打顶期最大叶长、最大叶宽、株高，以及圆顶期烟株中部单叶鲜质量和叶绿素的相对值，对烟草青枯病具有更好的防控效果，在发病高峰期的防控效果达52.27%.研究结果揭示了棉隆不同年限熏蒸对烟草青枯病的防控作用，有望为烟草实际生产防治青枯病提供理论依据与技术支撑.Abstract: Use of soil fumigants can effectively reduce the number of harmful microorganisms in the soil, and have a certain implantation effect on soil-borne disease prevention and control measures. However, the effects of different fumigation years need to be further explored.In this study, a field experiment was conducted to compare the effects of using dazomet for two years, one year and the treatment without the fumigant on tobacco growth and bacterial wilt disease. The results showed that the treatment ofusing dazomet for two years has a better effect on the growth of tobacco plants, and can significantly increase the maximum leaf length, maximum leaf width, and plant height during the topping stage of the tobacco plant, and the fresh weight and the relative content of chlorophyll in the middle of the tobacco leaves during the dome period. It also has a better prevention and control effect on tobacco bacterial wilt, and the prevention and control effect reaches 52.27% during the peak period.The results of the study reveal the effects of different fumigation years of dazomet on the prevention and control of tobacco bacterial wilt, which is expected to provide theoretical basis and technical support for the actual tobacco production and control of bacterial wilt.
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Key words:
- Dazomet /
- fumigation years /
- agronomic characters /
- tobacco bacterial wilt .
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