水冬瓜又名山桐子,属于大枫子科落叶乔木,它具有生长快,产量高,适应性强等特点。树形高大,花果引人。种子含油量约30％,果皮含油量约25％,油品可供食用和工业用,是一种很好的油料树和观赏树。水冬瓜是雌雄异株,幼苗期不易辩别雌雄,需待5—6年开花后才能识别,目前生产上采用育大苗,等开花后出圃,按一定雌雄比例进行植树造林,或是先把幼苗栽上,等开花 Water melon, also known as jatropha, belongs to the big Maple branch deciduous trees, it has fast growth, high yield, adaptability and so on. Tree tall, flower introduction. Seed oil content of about 30%, peel oil content of about 25%, oil for food and industrial use, is a good oilseed and ornamental trees. Water melon is dioecious, seedling difficult to distinguish between male and female, to be 5-6 years after flowering in order to identify the current production of large seedlings used, such as flowering after the nursery, according to a certain proportion of male and female afforestation, or the first seedlings Planted, and other flowers