Technical Approach of Saving and Improving Efficiency of Chemical Fertilizers in Dancong Tea Area of Guangdong

ZHOU Bo; CHEN Qin; CHEN Hanlin; TANG Hao; LI Jianlong; CHEN Jialin; CHEN Yiyong; LIU Jiayu; TANG Jinchi

doi:10.13305/j.cnki.jts.2020.05.005

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Journal of Tea Science ›› 2020, Vol. 40 ›› Issue (5) : 607-616. DOI: 10.13305/j.cnki.jts.2020.05.005

Research Paper

Technical Approach of Saving and Improving Efficiency of Chemical Fertilizers in Dancong Tea Area of Guangdong

ZHOU Bo¹, CHEN Qin², CHEN Hanlin², TANG Hao¹, LI Jianlong¹, CHEN Jialin², CHEN Yiyong¹, LIU Jiayu¹, TANG Jinchi^1,*

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Abstract

The study of four technical modes of saving and improving efficiency of chemical fertilizers were carried out through field trials. Soil fertility, tea yield and quality were investigated. After that, the fertilizer agronomic efficiency and comprehensive economic benefits were compared and analyzed. The results show that, the four technical approaches could reduce chemical fertilizer input by 20%-30% (reduce total nutrient input by 17%-0) without reducing fresh tea leaves yield. Tea qualities were slightly improved and the annual economic benefits were increased by 15.1-32.6 thousand CNY. Among four technical modes, the controlled-release fertilizer model had the highest agronomic efficiency and comprehensive economic benefits, increasing by 58.0% and 10.9% respectively compared to the control. The organic substitution model had the most significant quality improvement, with an increase of 10.2% in amino acids, 9.6% in soluble sugars, and a decrease of 13.4% in phenol-ammonia ratio. In summary, the two technical approach models of controlled release fertilizer and organic substitution in this study had good adaptabilities in Dancong tea area of Guangdong, and could be promoted and applied.

Key words

Dancong tea / economic benefit / fertilizer agronomic efficiency / saving and improving efficiency of chemical fertilizers / tea quality components

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ZHOU Bo, CHEN Qin, CHEN Hanlin, TANG Hao, LI Jianlong, CHEN Jialin, CHEN Yiyong, LIU Jiayu, TANG Jinchi. Technical Approach of Saving and Improving Efficiency of Chemical Fertilizers in Dancong Tea Area of Guangdong[J]. Journal of Tea Science. 2020, 40(5): 607-616 https://doi.org/10.13305/j.cnki.jts.2020.05.005

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