Seven intercropping patterns were experimented and popularized in recent three years in the national dryland agricultural
experiment district in South Ningxia. This paper introduces these patterns and puts emphasis on analyzing resources utilization conditions of the patterns combined with the records of EL 900 automatic meteorological station. The results indicate that the mean use ratio of light resources and heat resources of these intercropping patterns is 85% and 85.7% respectively, which show an increase of 18.8% and 18.2% respectively compared with mono cropping; The
solar energy utilization efficiency of these patterns is 0.634%~1.301%, the mean is 0.98%, which indicate an increase of 1.4 times against the monocropping; The mean
land equivalent ratio of these inter cropping patterns is 1.66. Above facts show clearly that the intercropping can effectively utilize local light resources and heat resources and land resources, and so the intercropping is a practical path for development of high effective agriculture in semiarid areas liable to droughts.