STRAW RETURN WITH BIOCHAR INCREASED SOIL MACRO- AGGREGATES AND IMPROVED FLUE-CURED TOBACCO (Nicotiana tabacum L.) YIELD AND QUALITY
文献类型： 外文期刊
第一作者： Jiang, C.
作者： Jiang, C.;Zu, C.;Yan, Y.;Shen, J.;Wang, H.;Liu, Y.
作者机构：
关键词： tobacco-planting soil; soil quality; sensory quality of tobacco leaf; aggregate fractions; pig manure
期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.816； 五年影响因子：0.896 ）
ISSN： 1589-1623
年卷期： 2022 年 20 卷 1 期
页码：
收录情况： SCI
摘要： Straw return and biochar are often applied to improve soil fertility and increase crop yield. However, the effects of these practices on soil aggregates and tobacco leaf yield and quality are still unclear. Five treatments: no straw (CK), application of rice straw (RS), tobacco straw biochar (TSB), RS plus TSB (RS+TSB), and RS plus pig manure (RS+PM) were conducted to evaluate the effects of straw return and biochar on soil aggregates, tobacco leaf yield and quality in Southern Anhui, China. Results showed that TSB significantly increased soil pH by 0.38. The RS+TSB and RS+PM significantly increased the contents of soil organic matter, available nitrogen (N) and potassium (K). Biochar and straw return increased 5 mm aggregates fraction in topsoil (0-20 cm) with an order of RS+PM > RS+TSB > TSB > RS. The RS+TSB and RS+PM significantly increased the yield, appearance and sensory quality of tobacco leaf. The leaf yield and quality were positively correlated with >5 mm aggregates fraction, but negatively correlated with <0.25 mm aggregates. These results indicated that straw return with pig manure (375 kg ha(-1)) or biochar (1050 kg ha(-1)) increased the yield and quality of tobacco leaf, likely due to their effect on large soil aggregate and the available of macronutrients in soil.
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