Comparison on the abundance of the main groups of canopy arthropod pests in peach orchards with ground cover and without ground cover.

Notes: here Homoptera is a suborder of the Hemiptera insect, including Psyllidae, whitefly, cicadas, aphids, scale insects, i.e.; different letters in the same column indicate that the means are significantly different at P<0.05 (HSD test) within groups of ground cover (treatment) and bare ground (control) in Xinchang and Hudai during the three years (57 sample dates were considered as 57 replicates). Means of the five orders of arthropod pests were calculated from a total 30 trees per treatment or control.