Zhenong 21

Zhenong 21. (C. sinensis). Yang Yajun and Liang Yuerong, 2014. Clone Cultivars of Tea in China. p.79. Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.56-57: [Applicant] Zhejiang University. [Breeder] Liu Zusheng; Zhao Xueren; Wang Airong; Hu Yueling; Zhou Jugan; Liang Yuerong; Zhao Dong; Lu Jianliang; Zheng Xinqiang. [Variety number] Non-major crop variety registration number: GPD Tea Tree (2020)330031. former National Crop Variety Validation Committee Validation number: National Validation Tea 2002012. [Variety origin] Selected by the Tea Research Institute of Zhejiang University from a single strain of the natural hybrid progeny of 'Yunnan Daye' in Pingyang, Zhejiang Province. [Characteristics] Small tree type, middle-growth species, strong growth potential, half-open posture, medium leaf type, leaf length 9.0 cm, width 3.7 cm, leaf blade medium oval, leaf insertion state level. In Hangzhou area spring tea bud one leaf period at the end of March, the new buds and leaves green, velvet hairs, buds strong, a bud of three leaves 6.8 centimeters long, one hundred bud weight 104.0 grams. Spring tea bud two leaves biochemical samples containing tea polyphenols 11.0%, amino acids 4.6%, caffeine 2.6%, water leachate 45.8%. Suitable for black tea, green tea. The quality of black tea is similar to that of 'Qianmei 419', and the black tea is strong and flavorful with floral aroma; the green tea is high in aroma and flavor, and it is suitable for making Maofeng. The first growth cycle mu yield of one bud and two leaves 24 kg of fresh leaves, 43% higher than the control 'Fuding Dabaicha'; the second growth cycle mu yield 107 kg, 39% higher than the control 'Fuding Dabaicha'. High resistance to tea leafhopper, high resistance to tea anthracnose, moderate cold resistance, strong drought resistance. [Suitable for planting area and cultivation technology] Suitable for planting in Guangdong, Guangxi, Fujian, Jiangxi, Hunan, Zhejiang and other tea areas in spring, fall and winter. Planting and shearing according to conventional tea garden specifications. In the row spacing of 1.5 meters specifications, using a single row or double row planting; young age to do a good job of anti-freezing to protect seedlings; timely, batch picking. Control the amount of nitrogen fertilizer in the later stage to facilitate overwintering.