玉溪河建山干渠全长约23．5公里，内外边坡马道杂草丛生，尤以外边坡及混凝土路面两旁的杂草为盛，影响着工程形象。这些“杂草”主要有：灌木丛之乔木，枝冠呈伞状，树杆直径1厘米～2厘米；根茎类植物，高度数厘米到1米左右，俗称惠子草，毛草、马克草等伏地生长的草类，以爬 Yuxi River Jianshan trunk about 23.5 km in length, inside and outside the slope of horses and weeds overcrowding, especially outside the slope and concrete pavement on both sides of the weeds Sheng, affecting the project image. These “weeds” are mainly: the shrubs of trees, the branches were umbrella-shaped, tree stem diameter of 1 cm to 2 cm; rhizomes, height of several centimeters to 1 meter, commonly known as Keiko, Mao grass, Grass growing in volts to climb