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青海蚕豆的种植主要集中在海拔1700—2800m间的黄河、湟水、隆务河河谷及两岸的丘陵地带。依蚕豆的自然生态适应地区可划分为东部蚕豆主要生态区、海南半干旱蚕豆生态区、柴达木盆地干旱蚕豆生态区和海北及青南蚕豆次生态区。东部蚕豆主要生态区因海拔的垂直分布、气候特点,又可分为三个生态副区,即温暖川水蚕豆生态副区、干旱浅山蚕豆生态副区和高寒脑山蚕豆生态副区。
The planting of fava beans in Qinghai is mainly concentrated in the Yellow River, Huangshui River, Longwu River valley and the hilly areas on both sides of the river between 1700-2800m above sea level. According to the natural ecological adaptation of faba bean, it can be divided into the main ecological zone of eastern broad bean, the semi-arid broad bean ecological zone of Hainan, the dry broad bean ecological zone of Qaidam basin and the sub-ecological zone of northern and southern Qibing. Due to the vertical distribution of altitude and climate characteristics, the main ecological zone of eastern broad bean can be divided into three ecological sub-zones, that is, the ecological sub-zone of warm and broad-bean broad bean, the ecological sub-zone of broad-bean and broad-leaved mountain broad bean and the ecological sub-district of broadleaf and broadleaf bean.