Yusun

Yusun. (C. sinensis). Yang Yajun and Liang Yuerong, 2014. Clone Cultivars of Tea in China. p.189. Originated from Hunan. Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.408-409. [Applicant] Hunan Tea Research Institute. [Breeder] Hunan Tea Research Institute. [Variety Number] Non-major Crop Variety Registration No. GPD Tea Tree (2019)430023. former Hunan Provincial Crop Variety Validation Committee Non-major Crop Variety Registration No. XPD029-2009. [Variety Source] Hunan Provincial Academy of Agricultural Sciences, Tea Research Institute, using Japanese 'Yabukita' species as the parent, and 'Fuding Great White Tea', 'Chinking Leaf Qi', 'Xiangbo Green Tea' as the mother species. The tea research institute of Hunan Academy of Agricultural Sciences took the Japanese 'Yabukita' as the parent, and mixed pollen of 'Fuding Great White Tea', 'Chinking Leaf Qi', 'Xiangbo Green' and 'Longjing 43' as the parent. The pollen of 'Longjing 43' and 'Chinkapin Leaf Qi', 'Xiangbo Green' and 'Longjing 43' were produced by crossbreeding method. [Characteristics]: Shrub type, early growth, strong growth potential, half-open posture, medium leaf type, leaf blade length 7.8 cm, width 2.7 cm, leaf blade elliptic, leaf blade attachment state upward slanting, mature leaf blade leaf surface spreading and glossy, leaf tip acuminate, leaf veins 11 pairs, 37 pairs of serration; the new shoots holding tenderness strong, apical dominance is strong. In Changsha area spring tea bud one leaf period in late March, the new buds and leaves light green, more hairy, dense buds, a bud of three leaves 9.3 centimeters long, one hundred buds weighing 77.0 grams. Spring tea bud two leaves biochemical samples containing tea polyphenols 30.4%, amino acids 4.2%, caffeine 4.2%, water leachate 44.2%. Suitable for green tea. Make green tea 'Xibu shape color green emerald, hair, soup color yellow-green bright, aroma and fragrance high long, taste fresh and tender mellow and fresh, leaf bottom tender uniform green bright. The first growth cycle mu yield of one bud and two leaves 1218 kg of fresh leaves, than the control 'Fuding big white tea' 50% increase in yield; the second growth cycle mu yield of one bud and two leaves 1141 kg of fresh leaves, than the control 'Fuding big white tea' 39% increase in yield. It is resistant to tea anthracnose and tea cake disease, pseudoeye small green leafhopper and tea orange gall midge, and has strong resistance to cold and drought. [Suitable for planting area and cultivation technology points] Suitable for planting in Hunan tea area in winter and spring. Double rows of double plants, before transplanting adequate bottom fertilizer, transplanting 3 times after the stereotypes pruning; strong growth potential, pay attention to strengthen the fertilizer management; spring, summer and autumn each year before the tea sprouting urea for fertilizer.

杨亚军、杨月荣主编，2014. 《中国无性系茶树品种志》上海科学技术出版社，第189页。

登记编号：GPD茶树(2019)430023

  作物种类：茶树

  品种名称：玉笋

  申 请 者：湖南省茶叶研究所

  育 种 者：湖南省茶叶研究所

  品种来源：以薮北为母本，福鼎大白茶等混合花粉杂交选育而成

  特征特性：茶。属灌木型，树姿半开张，成熟叶片叶长7.8厘米，叶宽2.7厘米，叶面平展有光泽，叶尖渐尖，叶脉11对，锯齿37对，叶片半上斜着生。新梢持嫩性强，顶端优势强。1芽1叶、1芽2叶、1芽3叶期与福鼎大白茶相当，属早生种。适制茶类绿茶，茶多酚30.4%，氨基酸4.2%，咖啡碱4.2%，水浸出物44.2%，制烘青绿茶外形条索紧细有毫，色泽翠绿，香气高长，汤色绿亮，滋味醇厚鲜爽，叶底嫩绿明亮。中抗茶炭疽病、中抗茶饼病、中抗假眼小绿叶蝉、中抗茶橙瘿螨，抗寒性强，抗旱性较强。第1生长周期亩产1218.2千克，比对照福鼎大白茶增产49.7%；第2生长周期亩产1141.0千克，比对照福鼎大白茶增产39.2%。

  栽培技术要点：1.当年12月到次年3月种植，种植密度为双行双株150厘米×33厘米×20厘米。2.栽植茶苗前开种植沟，要求沟深0.6米，宽0.5米，每亩施猪牛粪、土杂肥等4000～5000千克、饼肥300千克和复合肥100千克作基肥。栽植茶苗后浇足定蔸水，并进行第一次定型修剪，离地面15～20厘米剪茶苗主干，分别在定植后第2年和第3年离地面30厘米和45厘米进行2次定型修剪。3.每年春、夏、秋三季茶萌发前施尿素作追肥，施肥量一般1～2年生茶园每亩施10千克，3～4年生茶园每亩施30～40千克，投产后按鲜叶产量每100千克施尿素10千克左右。

  适宜种植区域及季节：适宜在湖南茶区冬、春两季种植。

  注意事项：生长势强，注意加强肥水管理。

【产地与分布】由湖南省农业科学院茶叶研究所以日本薮北种为母本、福鼎大白茶、槠叶齐、湘波绿和龙井43号等优良品种的混合花粉做父本采用杂交育种法育成。湖南茶区有较大面积栽培2009年通过湖南省农作物品种审定委员会审定，编号XPD029-2009。【形态特征】 树姿半开张，分枝较密。叶片呈半上斜状着生，椭圆形，叶色绿，有光泽，叶面平展，叶身平，叶缘平，叶尖渐尖，叶脉11对，锯齿37对，叶质较厚软。花瓣白色、5瓣，萼片5枚，柱头3裂。【特性】 春季萌发早。2010年和2011年在长沙县髙桥镇观测，一芽二叶初展期分别为4月3日和3月27日，分別比福鼎大白茶早1天和6天。芽叶生育力和持嫩性强，浅绿色，茸毛较多，一芽ニ叶百芽重20.3g。2011年在长沙县高桥镇取样，春茶一芽二叶干样含茶多酚17.8%、氨基酸6.8%、咖啡碱3.4%、水浸出物48.5%。产量高，4~6龄茶园仅春季每667m2可产鲜叶1030kg。适制绿茶，品质优良，尤宜适制高档绿茶。其成品茶外形、汤色和叶底具有明显的“三绿”特征。抗寒、抗寒性强，抗瘿螨较弱。【适栽地区】湖南绿茶茶区。【栽培要点】茶园可布置为双行双株或双行单株，大行距1.5m，小行距0.33m，株距0.33m。双行双株每667㎡栽5500~6000株，茶园成园快；双行单株每667㎡栽2500~3000株，茶园成园稍慢。