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2022 Volume 1 Issue 1
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JIN Yabo, CHEN Tiancai, WANG Ke, et al. The Effect of N and K Compound Fertilizer and K2SO4 on the Growth and Disease Resistance of Tobacco Variety K326[J]. PLANT HEALTH AND MEDICINE, 2022, (1): 26-34. doi: 10.13718/j.cnki.zwyx.2022.01.004
Citation: JIN Yabo, CHEN Tiancai, WANG Ke, et al. The Effect of N and K Compound Fertilizer and K2SO4 on the Growth and Disease Resistance of Tobacco Variety K326[J]. PLANT HEALTH AND MEDICINE, 2022, (1): 26-34. doi: 10.13718/j.cnki.zwyx.2022.01.004
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The Effect of N and K Compound Fertilizer and K2SO4 on the Growth and Disease Resistance of Tobacco Variety K326

  • 1. China Tobacco Guangxi Industrial Co., LTD., Nanning 530001, China;

  • 2. Chongqing Fengjie Branch, China National Tobacco Corporation, Chongqing 404600, China;

  • 3. College of Plant Protection, Southwest University, Chongqing 400715, China;

  • 4. Chongqing Tobacco Research Institute, Chongqing 400715, China

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  • Received Date: 30/12/2021

  • MSC: S143.4+2;S572

  • In order to investigate the effects of two different topdressing methods on disease resistance and growth of tobacco, a plot experiment was carried out in Fengjie county of Chongqing. The results showed that topdressing treatment had a positive effect on tobacco plant growth.Application of N and K compound fertilizers at 15-20 days significantly promote the increase of leaf area, plant height, number of effective leaves, single leaf weight, proportion of top tobacco, yield and output value. The promotion effect was the most obvious when the side nest dry application and closed nest were applied, which can increase the proportion of high-quality cigarettes by 16%, and the output value by 468 RMB/667 m2 compared with the no topdressing group, and significantly increases the income. In addition, applying N and K compound fertilizers can significantly reduce the disease index of tobacco virus disease, tobacco brown spot disease and tobacco wildfire, but the various topdressing methods had little effect on the disease incidence.When K2SO4 is topdressed at 35 days after transplanting, it significantly promoted the increase of leaf area, plant height, number of effective leaves, leaf weight, proportion of top tobacco, yield and output value. When the lateral fossa was sprayed with K2SO4, the promotion effect was the most obvious, which can increase the proportion of high-grade tobacco by 27%, 18% higher than that of other topdressing methods. The output value was increased by 619 RMB/667 m2 compared with the no topdressing group, which can significantly increase the income. Topdressing K2SO4 had little effect on incidence of tobacco virus disease, brown spot disease and wildfire disease, but significantly reduced the disease index of tobacco virus disease, brown spot disease and wildfire disease. The methods of topdressing had little effect on disease index.In addition, compared with that of N and K compound fertilizer, application of K2SO4in the side of nest increased yield by 22.39 kg/667 m2 and output values by 212.75 RMB/667 m2. However, the effect of spraying K2SO4 on disease resistance of tobacco was not significantly different from that of application of N and K compound fertilizer.
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The Effect of N and K Compound Fertilizer and K2SO4 on the Growth and Disease Resistance of Tobacco Variety K326

  • Received Date: 30/12/2021

Abstract: In order to investigate the effects of two different topdressing methods on disease resistance and growth of tobacco, a plot experiment was carried out in Fengjie county of Chongqing. The results showed that topdressing treatment had a positive effect on tobacco plant growth.Application of N and K compound fertilizers at 15-20 days significantly promote the increase of leaf area, plant height, number of effective leaves, single leaf weight, proportion of top tobacco, yield and output value. The promotion effect was the most obvious when the side nest dry application and closed nest were applied, which can increase the proportion of high-quality cigarettes by 16%, and the output value by 468 RMB/667 m2 compared with the no topdressing group, and significantly increases the income. In addition, applying N and K compound fertilizers can significantly reduce the disease index of tobacco virus disease, tobacco brown spot disease and tobacco wildfire, but the various topdressing methods had little effect on the disease incidence.When K2SO4 is topdressed at 35 days after transplanting, it significantly promoted the increase of leaf area, plant height, number of effective leaves, leaf weight, proportion of top tobacco, yield and output value. When the lateral fossa was sprayed with K2SO4, the promotion effect was the most obvious, which can increase the proportion of high-grade tobacco by 27%, 18% higher than that of other topdressing methods. The output value was increased by 619 RMB/667 m2 compared with the no topdressing group, which can significantly increase the income. Topdressing K2SO4 had little effect on incidence of tobacco virus disease, brown spot disease and wildfire disease, but significantly reduced the disease index of tobacco virus disease, brown spot disease and wildfire disease. The methods of topdressing had little effect on disease index.In addition, compared with that of N and K compound fertilizer, application of K2SO4in the side of nest increased yield by 22.39 kg/667 m2 and output values by 212.75 RMB/667 m2. However, the effect of spraying K2SO4 on disease resistance of tobacco was not significantly different from that of application of N and K compound fertilizer.

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