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    Not found Tobacco Cultivation and Production

    The contents of this column are the scientific research and practical technology of tobacco planting, production and processing, as well as the forward-looking review articles in the field of tobacco research, involving topics such as tobacco genetics and breeding, cultivation technology, modulation and processing, physiology and biochemistry, tobacco plant protection, review or monographs, quality chemistry, etc.

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    Effect of Bemisia tabaci B Infestation on Growth of Three Cucurbitaceae Host Plants
    Xin Liang, Haipeng Zhao, Xia Sun, Yanan Xu, Zhifei Jia, Ming Xue
    Chinese Agricultural Science Bulletin    2020, 36 (10): 133-139.   DOI: 10.11924/j.issn.1000-6850.casb19010126
    Abstract + (387)    HTML (2)    PDF (1350KB) (83)      

    In this study, the effect of Bemisia tabaci B infestation on the growth and development of zucchini, pepo and towel gourd were investigated through measuring the growth indexes and chlorophyll content of these three Cucurbitaceae host plants by ruler measurement, oven drying and spectrophotometry after B. tabaci infestation. The results showed that feeding of B. tabaci B had a significant negative effect on the growth of all the three Cucurbitaceae host plants. After 30 d of infestation, the plant height, stem diameter and leaf area of zucchini all significantly decreased, with an inhibition ratio of 35.08%, 4.38% and 20.73%, respectively, compared with the uninfested plants, and the dry weight was 31.86% lower than that of the control. Plant height of the affected towel gourd significantly reduced compared with that of uninfested control plants, and the inhibition rate was 31.47%, while the stem diameter, leaf area and dry weight of towel gourd were not significantly affected after B. tabaci infestation. Similarly, the stem diameter and dry weight of pepo all obviously decreased compared with that of the control plants, however, the plant height and internode length of pepo increased, with an inhibition rate of -28.69% and -42.63%, respectively. Biochemical assays showed that the leaf chlorophyll content of the three host plants decreased significantly after B. tabaci B infestation, especially the zucchini, of which the chlorophyll a and b content decreased by 68.22% and 64.63%, respectively.
    Design of Centralized Feed System for Biomass Pellet Fuel and Its Application in Tobacco Leaf Baking
    Duzhong Jiang, Honglang Chen, Yang He, Shen Tang, Xinbai Nie, Dawei Zhang, Qingsong Cheng, Quanliu Yang
    Chinese Agricultural Science Bulletin    2020, 36 (10): 140-144.   DOI: 10.11924/j.issn.1000-6850.casb19010042
    Abstract + (353)    HTML (2)    PDF (1548KB) (76)      

    To explore the efficient application of biomass particle burner in baking workshops or baking barns, a centralized feed system for biomass pellet fuel was designed to realize the automatic supply of biomass particle fuel in baking barns. The results showed that using biomass pellet fuel for heating tobacco curing could control temperature and humidity accurately, and the curing process was easy to be in place, which was conducive to improving the quality of tobacco curing and reducing the energy consumption cost of tobacco curing. The centralized feed system for biomass pellet fuel could realize the automatic supply of biomass pellet fuel in each curing room, and there was no material shortage during the whole baking process. So it could reduce the labor of tobacco leaf curing operation, and cut the labor and cost of tobacco leaf curing.
    Abundance Evaluation of Nutrient Content in Tobacco Soil of Longlin
    Zilin Li, Leifeng Zhao, Yachun Lu, Wenliang Zhou, Gang Luo, Xiaolin Liao, Fuzhao Nian, Dongsheng Fan
    Chinese Agricultural Science Bulletin    2020, 36 (10): 25-32.   DOI: 10.11924/j.issn.1000-6850.casb19010073
    Abstract + (306)    HTML (5)    PDF (1268KB) (138)      

    The paper aims to evaluate the status of soil nutrient abundance in tobacco planting areas in Longlin, and provide reference for tobacco planting and rational fertilization. The Longlin tobacco-growing area was used as the evaluation unit, and the mathematical statistics were adopted to study the nutrient content and nutrient abundance status of the tobacco soil. The results showed that the soil pH value and total nitrogen were relatively good in the tobacco-growing area of Longlin, soil organic matter, available sulfur, available potassium, available phosphorus, exchangeable magnesium were less appropriate, soil active chlorine, available boron, exchangeable calcium had high suitability. The soil nutrient content in the tobacco-growing area was evaluated for abundance and deficiency, and the results indicated that in the process of tobacco planting, scientific fertilization should be carried out, to control nitrogen, phosphorus, chlorine and calcium, increase potassium, sulfur, magnesium and boron, and reduce the large-scale application of alkaline fertilizer