Objective: The purpose of this project was to provide theoretical basis for the selection of suitable almond shape in almond-wheat intercropping systems through the research of four different almond tree cultivation shapes' canopy, photosynthetic rate and micro environment indicators, and the effect on lighting distribution and growth behaviors of intercropping wheat. Method: Ten years-old Wanfeng-almond trees were used as testing materials, and four structure treatments such as trunk-delaminating shape, open-center shape, spindle shape and high-stem round capitiform were set to study the difference among those four tree shapes and survey lighting distribution and wheat growth condition. Result: The load of per spindle shape tree was 1,184 per plants, which was lower than trunk-delaminating treatment. Due to small canopy volume of spindle shape, the load of unite projection plane was the highest, reaching 94.8 per m 2, and it was 2.06 times of trunk-delaminating treatment. The spindle shape tree's inner crown lighting distribution condition was better than other three treatments, reaching 31% of nature condition. Effect of spindle shape treatment on overshadow of intercropping area was lower, and stained lightly. The light intensity of overall intercropping area and at the both sides of the near crown areas was respectively 40.89% and 34.57% of nature condition. Conclusion: The preliminarily research showed that the spindle tree had high yield and lower influence on intercropping area, and it is suitable for the tridimensional composite planting system.
