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调理剂对茶园土壤和茶叶产量及品质的影响
万青, 胡振民, 李欢, 李荣林, 杨亦扬
江苏省农业科学院
摘要:
通过田间试验,研究不同调理剂与茶叶配方肥配施对茶园土壤性质和茶叶产量品质构成的影响。结果表明:3种土壤调理剂均能不同程度地改善茶园土壤肥力及提升茶叶产量和品质,对表层(0 ~ 20 cm)土壤的改良效果要明显好于亚表层(20 ~ 40 cm)土壤。其中,“亚科丰”土壤调理剂提高土壤pH的幅度较高,其次是“田师傅”土壤调理剂和生物质炭处理。生物质炭在提高土壤肥力以及茶叶产量和品质方面综合表现较好,酸性土壤茶园在施用生物炭后,可显著提高土壤有机质和氮磷钾元素含量,同时也能提高茶叶百芽重和发芽密度以及鲜叶中游离氨基酸总量。
关键词:  土壤酸化  调理剂  pH  养分元素  品质成分
DOI:10.13758/j.cnki.tr.2019.06.006
分类号:S571.1;S156.2;S506.1
基金项目:江苏省自然科学基金项目(BK20160590)、国家自然科学基金项目(31600558;31800590)和江苏省农业科技自主创新项目(CX(16)1003)资助。
Effects of Soil Conditioners on Soil Properties and Yield and Quality Components of Tea in Tea Garden
Wan Qing, Hu Zhenmin, Li Huan, Li Ronglin, Yang yiyang
Jiangsu Academy of Agricultural Sciences
Abstract:
Field experiments were conducted to study the effects of different soil conditioners and tea formula fertilizers on soil properties and yield and quality components in acidic tea garden. The results showed that all the three soil conditioners could improve soil fertility and yield and quality of tea in different degrees, and the improvement effect of surface soil (0–20 cm) was better than that of subsurface soil (20–40 cm). Among the three soil conditioners, Ya-Kefeng soil conditioner increased soil pH by the highest extent, followed by Tian-Shifu soil conditioner and biochar treatment. Biochar treatment appeared a better comprehensive performance in improving soil fertility and tea yield and quality. The application of biochar in tea garden could significantly increase the contents of soil organic matter, nitrogen, phosphorus and potassium, and also increase the 100-bud weight and germination density of tea, as well as the total amount of free amino acids in leaves.
Key words:  Soil acidification  Soil conditioner  pH  Nutrient elements  Quality components

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