Abstract:
Objective The nutrient status and fertility quality of tea garden soil directly affect the quality of tea. However, the investigation and assessment of soil health in tea garden is still insufficient.
Method The physical and chemical indices of soil samples from 38 Tieguanyin tea gardens in 13 main tea-producing towns in Anxi were detected, and a comprehensive evaluation with the integrated fertility index (IFI) was constructed by measuring soil pH value and key nutrient elements.
Result The results showed that the average pH value of tea garden soil was 4.0, and nearly 55% of tea garden soil was strongly acidic. The indies of soil organic matter, total nitrogen, total phosphorus, total potassium, alkali hydrolyzable nitrogen, available phosphorus and available potassium in tea garden soil were relatively high. According to the comprehensive evaluation indices, the IFI value ranged from 0.52 to 1.00, with an average value of 0.84. The percentages of 84 in the tea gardens were in class I high-quality standard.
Conclusion Most of the Tieguanyin tea garden soil in Anxi has been seriously acidified, but the overall nutrient status of Anxi tea garden soil is still in good condition, and the comprehensive index of soil fertility (IFI) of the tea garden is high, indicating that the soil is generally healthy in Anxi Tieguanyin tea garden.
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