净桦树液:净制桦树液
Jing-hua-shu-ye: Hua-shu-ye processed by cleaning.

功效作用 功能
Efficacy and Functions

祛痰止咳，清热解毒。主治
Relieve phlegm and cough, clear heat and detoxify. Mainly used for...

用于咳嗽，气喘，小便赤涩。用法用量
Used for cough, asthma, and painful urination. Dosage and administration.

内服：鲜汁20-30ml。药理作用
Internal administration: Fresh juice 20-30ml. Pharmacological effects.

1、抗疲劳。2、耐缺氧作用。3、增加免疫器管重量。4、促进生长发育。相关论述

1. Anti-fatigue.2. Tolerance to hypoxia.3. Increase in immune organ weight.4. Promotion of growth and development.Related discussions.

《黑龙江常用中草药》：“清热，解毒。治坏血病，肾脏病，痛风。”临床应用 相关配伍
"Commonly Used Chinese Herbs in Heilongjiang Province: 'Clears heat, detoxifies. Used to treat blood disorders, kidney diseases, and gout.' Clinical applications and relevant herb combinations."

治咳嗽气喘：春季（5月初至中旬），将桦树皮划开，取流出汁液内服，每次2酒杯，日服1次。（《吉林中草药》）加工炮制 采收加工
Treating cough and asthma: In the spring (early to mid-May), split open the bark of a birch tree, extract the flowing juice, and take it orally, 2 wine cups each time, once a day. (From "Jilin Chinese Herbal Medicine") Processing and preparation: Harvest and process.

5月间将树皮划开，盛取液汁，鲜用。植物学信息 植物种属
In May, the bark is peeled off to collect the juice, which is used fresh. Botanical information: Plant species.

桦木科植物白桦。形态特征
Betulaceae plants include birch trees. Morphological characteristics.

白桦，又名：粉桦、桦皮树。乔木，高达25m。树皮白色，剥裂；枝条暗灰色或暗褐色，无毛；小枝暗灰色，嫩枝红褐色，光滑无毛。叶柄细瘦，长1-2.5cm；叶片卵形三角形、三角形、菱状三角形或卵状菱形，长3-9cm，宽2-7.5cm，先端渐尖，有时呈短尾尖，基部截形至楔形，有时微心形或近圆形，边缘有重齿，上面疏生毛和腺点，下面无毛，密生腺点，侧脉5-7对。果序单生，圆柱形或长圆柱形，下垂，长2-5cm；序梗细，长1-2.5cm，密生短柔毛，有时有腺点；果苞长5-7mm，外面密生短柔毛，中裂片三角卵形，顶端渐尖或钝，侧裂片卵形或近圆形。小坚果狭长圆形或卵形，长1.5-3mm，宽1-1.5mm，膜质翅较果长1/3，与果近等宽。花期5-6月，果熟期8-9月。分布区域
Betula, also known as white birch, paper birch, or birch tree. It is a deciduous tree that can grow up to 25 meters tall. The bark is white and peeling; branches are dark gray or dark brown, and smooth without hairs; twigs are dark gray, young twigs are reddish-brown and smooth without hairs. The leaf stalk is slender, 1-2.5cm long; leaf blades are ovate-triangular, triangular, rhombic-triangular, or ovate-rhombic, 3-9cm long and 2-7.5cm wide, gradually pointed at the tip, sometimes with a short tail-like tip, truncate to wedge-shaped at the base, sometimes slightly cordate or nearly circular, with serrated edges, sparsely hairy and glandular dots on the upper surface, hairless on the lower surface, densely glandular dotted, with 5-7 pairs of lateral veins. The fruit is solitary, cylindrical or elongated cylindrical, pendulous, 2-5cm long; the fruit stalk is slender, 1-2.5cm long, densely covered with short soft hairs, sometimes with glandular dots; the fruit bract is 5-7mm long, densely covered with short soft hairs on the outside, with three triangular ovate lobes, gradually pointed or blunt at the tip, and ovate or nearly circular lateral lobes. The small nut is narrowly oblong or ovate, 1.5-3mm long and 1-1.5mm wide, with membranous wings about 1/3 the length of the fruit, nearly equal in width to the fruit. The flowering period is from May to June, and the fruit ripens from August to September. Distribution area.

东北、华北及陕西、宁夏、甘肃、青海、河南、四川、云南、西藏等地。江苏有栽培。生长环境
Northeast China, North China, Shaanxi, Ningxia, Gansu, Qinghai, Henan, Sichuan, Yunnan, Tibet, etc. Cultivated in Jiangsu. Growing environment.

生于海拔400-4100m的山地林中，是阔叶林和针阔叶混交林常见树种，常成群落生长。
Born in mountain forests at altitudes of 400-4100 meters, it is a common tree species in broad-leaved forests and mixed coniferous and broad-leaved forests, often growing in clusters.