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茶园土壤质量保育技术研究进展

Research Progress on Preservation of Tea Plantation Soil Quality

  • 摘要: 我国是全球第一产茶大国,2024年全国茶树种植面积349.52万hm2,但长期植茶及集约化种植模式下的土壤退化问题已成为产业发展的突出制约。我国超46%的茶园土壤pH低于4.5,土壤酸化直接导致茶叶减产、氨基酸等特征成分含量下降,部分产区因土壤养分失衡引发茶叶风味变差。本文聚焦我国南方茶园尤其是福建省茶园土壤质量及保育发展现状,系统梳理国内外在土壤酸化改良和肥力提升、微生物优化、重金属修复及生态茶园构建等领域的研究进展。研究表明,福建茶园面临土壤酸化、养分失衡及微生物群落结构紊乱等挑战,科学施肥及生态茶园构建可显著改善土壤环境、提升茶叶品质。本文在综述基础上,结合茶业发展实际,提出了茶园土壤保育研究应聚焦土壤酸化防改良与肥力提升机制、根际微生物-茶叶品质关联规律及水肥智能化管理技术等对策,为茶产业高质量发展提供理论支撑与实践路径。

     

    Abstract: Being the world largest producer of tea, as of 2024, China claims a vast tea cultivation area of 52.38 million mu, or 34.92 million km2. The long years, intensive farming severely deteriorated the soil. The degradation seriously constrains further development of the agriculture. For instance, more than 46% of the plantations in China are tested to have a soil pH below 4.5. Soil acidification significantly lowers the production and nutritional quality of the crops grown on the land. In some regions, off balanced soil chemistry was known to relegate flavor of the tea produced. Focusing on the preservation of soil quality at tea plantations in southern China, particularly Fujian Province, this article reviewed the literature published in China and abroad on the advancements in the areas of acidification mitigation, fertility enhancement, microbial optimization, and heavy metal remediation on plantation soil as well as promotion of eco-friendly tea gardens. Studies indicated that tea plantations in Fujian are facing challenges of acidified soil, imbalanced fertility, and disrupted microbial community on the land. Well-designed fertilization and cultivation help maintain healthy plantation soil to ensure the continuation of an ample supply of quality tea products. Based on a comprehensive analysis and a thorough examination of the tea industry, recommendations are presented for future research to unveil the underline mechanism of soil acidification leading to effective preventive measures and fertility improvement, the critical roles of rhizosphere microorganisms naturally aiding the cultivation and upgrading the tea quality, and the intelligent water and fertilizer management maximizing precious nature resources for a sustainable industry.

     

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