为优化种植结构，充分利用光、热、水、土资源，提高玉米和南瓜的产量和产值。在兰州市榆中北山采用全膜双垄沟播方式，试验观察了单作玉米、单作南瓜、玉米间作南瓜3个处理对作物产量及经济效益的影响。结果表明，间作条件下，玉米的株高、穗长、百粒重，以及间作南瓜的蔓长、单株结果数、单果重较对应的单作处理农艺性状指标均有明显提高。玉米间作南瓜处理较单作玉米与单作南瓜处理分别增产28.59%、41.25%，产投比分别增加1.44、1.34倍。玉米间作南瓜具有显著的增产增收效果，种植操作、管理简单，在寒旱区具有推广价值。

In order to optimize the planting structure and fully utilize natural resouces to increase the yields and output values ofmaize and pumpkin, the high-yield cultivation technology of maize pumpkin intercropping was studied, a field experiment with three treatments i.e., maize monoculture(CQ), pumpkin monoculture(PQ) and maize pumpkin intercropping (CP), under the condition of full-film double-ridge planting was conducted in the north mountain of Yuzhong County, Lanzhou, yields and economic benefits were analyzed. The results showed that the height, ear length and 100 grain weight of maize in CP treatment were increased compared with those in CQ treatment, and the vine length, fruit number per plant and fruit weight of pumpkin was increased in CP treatment compared with those in PQ treatment. The yield of CP treatment was 28.59% and 41.25% higher than that of CQ and PQ treatments, respectively, the output/input ratio of CP was 1.44 times and 1.34 times higher than that of CQ and PQ treatments, respectively. Maize pumpkin intercropping has positive effect on production and income due to the simple planting operation and management, it has practical promotion value in cold and arid areas.

S344.3；S513