Effects of interplanting different herbage on microclimate in apple orchards in the area of Weibei plateau

The microclimate of interplanting herbage in apple orchard in Weibei areas in the loess plateau was surveyed by local observation. The results show that green grass regulates the surface temperature,humidity,as well as soil temperature.In different developmental stages,the regulation effects of forage grass are also different.Furthermore,the regulation effects are closely related to the types of grasses.The micro-climate effect of interplanting white clover in apple orchard in Weibei areas is better than interplanting the ryegrass.