山桐子是一种高产木本油料树种,属大风子科,是落叶速生乔木.八十年我县曾从外地引种栽培.最近在陈家乡林家村富家湾发现散生山桐子树,经初步统计已有三十多株,一般胸径为二十厘米,树高十米以上,树干通直园满,树皮灰白色,光滑不裂,树 Hill Jatropha is a high-yield woody oil species, is a big wind subfamily, is deciduous fast-growing arborvitae .Once eight years my county has introduced from the field cultivation.Recently in the home village of Chen Jiaxiang Fu Jia Bay found scattered Salix tree, the preliminary statistics More than thirty strains have been found, with a typical diameter of twenty centimeters and a height of ten meters or more. The tree trunk is straight and full, the bark is gray and white, smooth and not cracked, and the tree