Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
State Key Laboratory of Nutrition Resources Integrated Utilization, Kingenta Ecological Engineering Group Co. Ltd., Linyi, 276000, Shandong, China.
Sci Rep. 2020 Feb 4;10(1):1745. doi: 10.1038/s41598-020-57809-x.
Fertilisation datasets collected from field experiments (n = 21) in tea-producing areas from 2016 to 2018 were used to build a quantitative evaluation of the fertility of tropical soils (QUEFTS) model to estimate nutrient uptake of tea plants, and to investigate relationships between tea yield and nutrient accumulation. The production of 1000 kg spring tea (based on one bud with two young expanding leaves) required 12.2 kg nitrogen (N), 1.2 kg phosphorus (P), and 3.9 kg potassium (K), and the corresponding internal efficiencies (IEs) for N, P, and K were 82.0, 833.3, and 256.4 kg kg. To produce 1000 kg summer tea, 9.1 kg N, 0.8 kg P, and 3.1 kg K were required, and the corresponding IEs for N, P, and K were 109.9, 1250.0, and 322.6 kg kg. For autumn tea, 8.8 kg N, 1.0 kg P, and 3.2 kg K were required to produce 1000 kg tea, and the corresponding IEs for N, P, and K were 113.6, 1000.0, and 312.5 kg kg. Field validation experiments performed in 2019 suggested that the QUEFTS model can appropriately estimate nutrient uptake of tea plants at a certain yield and contribute to developing a fertiliser recommendation strategy for tea production.
利用 2016 年至 2018 年在产茶区进行的田间试验收集的受精数据集，建立了一个用于评估热带土壤肥力的定量模型（QUEFTS），以估计茶树的养分吸收，并研究茶叶产量与养分积累之间的关系。生产 1000 公斤春茶（基于一个芽带两个幼叶展开的叶子）需要 12.2 公斤氮（N）、1.2 公斤磷（P）和 3.9 公斤钾（K），相应的氮、磷和钾内部效率（IEs）分别为 82.0、833.3 和 256.4 公斤/公斤。生产 1000 公斤夏茶需要 9.1 公斤 N、0.8 公斤 P 和 3.1 公斤 K，相应的氮、磷和钾内部效率（IEs）分别为 109.9、1250.0 和 322.6 公斤/公斤。生产 1000 公斤秋茶需要 8.8 公斤 N、1.0 公斤 P 和 3.2 公斤 K，相应的氮、磷和钾内部效率（IEs）分别为 113.6、1000.0 和 312.5 公斤/公斤。2019 年进行的田间验证实验表明，QUEFTS 模型可以适当估计茶树的养分吸收量，并有助于制定茶叶生产的施肥推荐策略。
