Laocha 4

Laocha 4 (Camellia sinensis). Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.352-353. [Applicant] Qingdao Wanli River Tea Industry Co. [Breeder] Zhang Junpeng; Liu Bin; Jiang Xing; Liu Lei; Peng Zhengyun; Zhang Wenju; Jiang Chonghuan. [Variety Number]: Non-major crop variety registration number: GPD Tea Tree (2024)370004. [Variety Source]: Selected by Qingdao Wanlijiang Tea Industry Co., Ltd. and others from a single plant of 'Huangshan Seed'. [Characteristics]: Shrub type, small leaf type, early growing species. The tree posture is semi-open, the growth potential is medium, the branching part is medium, the branching density is medium. The leaf blade is upwardly inserted, narrowly elliptic, with a length of 8.2 centimeters, a width of 3.2 centimeters, a light yellow-green leaf color, and a sharp apex. The exploitation period is generally in early April, and the full bloom of one bud and two leaves is generally in late April. The germination density is medium, with few hairs. The length of one bud and three leaves is 8.2 centimeters, and the weight of one bud and three leaves is 53.5 grams. The blooming period is in the second half of August every year. The biochemical sample of one bud and two leaves in spring contains 23.4% of tea polyphenols, 4.4% of amino acids, 2.6% of caffeine, and 42.3% of water leachate. Suitable for green tea. Green tea, the appearance of fat, tender, green, green, bright, tender green soup color, chestnut aroma, taste fresh and mellow, the leaf bottom is tender, buds, uniform, tender green and bright. The first growth cycle mu yield of one bud and two leaves 90 kg of fresh leaves, and the control 'Fuding big white tea' yield is the same; the second growth cycle mu yield of 136 kg, than the control 'Fuding big white tea' yield increase of 2%. This variety is resistant to tea anthracnose, tea small green leafhopper, drought resistance and cold resistance. [Suitable for planting area and cultivation technology points] Suitable for spring and fall planting in Shandong alpine tea area, suitable for greenhouse facility cultivation. The use of two rows of double planting, transplanting time to 18-25˚C for the appropriate temperature. Keep 3500-4000 seedlings per mu, timely 3 times stereotypes pruning; to leave leaves in batches to pick, picking and raising combination; strengthen the tea garden fertilizer management.

崂茶4号 (Camellia sinensis ‘Laocha 4’). 陈亮等. 2024.《中国茶树品种资源志（上卷）茶树登记品种》第352-353页.【申请者】青岛万里江茶业有限公司，青岛万里江茶业专业合作社，青岛市茶叶协会。【育种者】张俊鹏；刘彬；姜星；刘蕾；彭正云；张文巨；江崇焕。【品种编号】非主要农作物品种登记号：GPD茶树（2024)370004。【品种来源】青岛万里江茶业有限公司等从‘黄山种’中单株选育而成。【特征特性】灌木型，小叶类，早生种。树姿半开张，生长势中等，分枝部位中，分枝密度中等。叶片向上着生，窄椭圆形，叶片长8.2厘米、宽3.2厘米，叶色浅黄绿，先端锐。开采期一般为4月上旬，一芽二叶盛期一般在4月下旬。发芽密度中等，茸毛少。一芽三叶长8.2厘米，一芽三叶百芽重53.5克。盛花期为每年8月下旬。春季一芽二叶生化样含茶多酚23.4%，氨基酸4.4%，咖啡碱2.6%，水浸出物42.3%。适制绿茶。制绿茶，外形肥嫩绿润显锋苗，汤色嫩绿亮，板栗香，滋味鲜醇，叶底细嫩、显芽、匀齐、嫩绿明亮。第一生长周期亩产一芽二叶鲜叶90千克，与对照‘福鼎大白茶’产量相同；第二生长周期亩产136千克，比对照‘福鼎大白茶’增产2%。该品种抗茶炭疽病，抗茶小绿叶蝉，抗旱性和抗寒性强。【适宜种植区域及栽培技术要点】适宜在山东高寒茶区春、秋季种植，宜大棚设施栽培。采用双行双株条栽，移栽时间以18-25C˚为适宜温度。每亩保苗3500-4000株，适时进行3次定型修剪；要分批留叶采摘，采养结合；加强茶园肥水管理。