树盘是果树生长发育的摇篮,也是杂草为害的场所。在综合防除果园杂草的措施中,使用塑料薄膜覆盖果树树盘,对控制杂草有较好的效果。云南省农科院植保所杂草研究室的同志,对防除狼尾草进行了小区试验。昆明郊区许多果园,狼尾草发生普遍,为害严重,高达1.5—2米,湮没树腰,并具有发达的地下茎,根茎主要 Tree tray is the cradle of fruit tree growth and development, but also places weeds damage. In the comprehensive control orchard weed control measures, the use of plastic film covered fruit trees, weeds have a good effect. Yunnan Academy of Agricultural Sciences, Institute of Plant Protection weeds comrades, prevention and control of Pennisetum plots. Kunming, many of the orchard, Pennisetum widespread, devastating, up 1.5-2 meters, annihilated tree lumbar, and has developed underground stems, rhizomes mainly