2025年秋冬茶树提单产科学施肥指导意见发布

Core Viewpoint - The National Agricultural Technology Promotion Center has released guidelines for scientific fertilization of tea trees for the autumn and winter of 2025, aimed at optimizing nutrient management in tea gardens and enhancing the quality and efficiency of the tea industry [2][3]. Fertilization Principles - The guidelines address issues such as insufficient organic fertilizer input, poor soil fertility, and imbalanced nutrient application, proposing several principles for fertilization [6][7]. - Fertilization should be based on soil fertility conditions, tea varieties, and yield levels, referencing national nitrogen fertilizer quotas to prevent nutrient under- or over-application [9]. - A combination of organic and inorganic fertilizers is recommended, with specific replacement ratios for organic fertilizers based on their nitrogen content and effectiveness [10][11]. - High-yield tea gardens and those with soil acidification should incorporate magnesium fertilizers and ensure adequate nutrient ratios [13][14]. - For severely acidified soils (pH < 4), measures such as lime application and organic matter addition are suggested for gradual improvement [15]. - Utilizing agricultural machinery for deep application of base fertilizers and drone spraying for foliar fertilizers is encouraged to enhance fertilizer efficiency [16]. - Scientific fertilization should be integrated with reasonable pruning and other green cultivation techniques [17]. Fertilization Recommendations - For nitrogen (N) application, different recommendations are provided based on tea types and yield levels, with specific ranges for various tea gardens [21][22][23]. - Phosphorus (P2O5) and potassium (K2O) application rates are also specified, with a recommended ratio of nitrogen to phosphorus and potassium [26][27]. - Magnesium (MgO) application is advised for high-yield and magnesium-deficient tea gardens, with specific rates for soil application and foliar spraying [29]. - Nutrient management should optimize the use of base and top-dressing fertilizers, with specific proportions for different tea harvesting schedules [32][34]. - The timing for base fertilizer application is recommended to be between late September and early November, with specific guidelines for different regions [35][36]. - Top-dressing should primarily use fast-acting nitrogen fertilizers, with application times based on tea growth and harvesting [39][41]. - To enhance nutrient storage and improve spring tea yield and quality, foliar application of amino acid fertilizers is suggested during the dormancy period [45][46]. - For tea gardens affected by mild drought, timely light pruning and nutrient foliar application are recommended to promote recovery [48].