Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (9): 2601-2609.DOI: 10.3969/j.issn.1000-2561.2021.09.022

• Plant Cultivation, Physiology & Biochemistry • Previous Articles     Next Articles

Yield, Quality, Nutrient Use Efficiency and Economic Profit of Tea under Different Fertilizer Reduction Techniques in Tea Garden

LIU Shengchuan1, LIN Kaiqin2, LIANG Sihui2, HE Ping2, WEI Jie2, YAN Donghai2, XU Lin1, HE Guoju1, ZHOU Yufeng2,*()   

  1. 1. School of Biological and Environmental Engineering, Guiyang University, Guiyang, Guizhou 550005, China
    2. Tea Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou 550006, China
  • Received:2020-09-30 Revised:2020-11-29 Online:2021-09-25 Published:2021-11-01
  • Contact: ZHOU Yufeng

Abstract:

To provide valuable resources and techniques for saving fertilizer and improving fertilizer efficiency in tea garden, a tea garden planted with 9-year-old clonal cultivar ‘Fudingdabaicha’, located in northeast Guizhou Province, was selected to conduct field tests. We performed the analysis of the effects of five treatments on tea yield, quality, nutrient use efficiency and economic profit. The five treatments were 1) the control (CK), no fertilizer, 2) conventional fertilization (CF), 3) treatment 1, 2 and 3 (T1, T2, T3). 32.1%, 33.8% and 46.0% chemical fertilizer was reduced in T1, T2 and T3 compared with CF, respectively. The annual yield of dry tea from T1, T2 and T3 was 3524.1, 3644.4 and 3835.7 kg/hm 2, respectively, which was significantly higher than that of CF (3127.3 kg/hm2 ), while the value in T1, T2, T3 and CF was significantly higher than that of CK (2172.6 kg/hm2). The lowest the ratio of tea polyphenols to free amino acids (TP/AA) in each season among five treatments was observed in T1. No significant difference for TP/AA were observed among CF, T1 and T2 in autumn. There were no significant difference of TP/AA among CF, T2 and T3 in spring and summer. In general, the annual nitrogen (N), phosphorus (P) and potassium (K) uptake amount and use efficiency was higher in T1, T2 and T3 than in CF, the best effect was observed in T3. The annual net income of each fertilization treatment was significantly higher than that of CK (36 900 yuan/hm2). Compared with CF, the annual net income could be increased by 14 800, 13 900 and 15 200 yuan/hm2, respectively. Our data showed that fertilizer furrow application is better than broadcast application in tea garden, and indicated that T1 and T3 contributed more to saving fertilizer and improving fertilizer efficiency compared to CF, while T3 was better. Our results suggested that the proportion of N, P and K should be adjusted, and the content of organic fertilizer and organic matter should be increased in tea special fertilizer. Additionally, the replacement ratio of organic fertilizer should be increased in T3.

Key words: tea garden, technique of fertilization, yield, quality, nutrient use efficiency, economic profit

CLC Number: