This research studied the water catchment effects in different afforestation depth and determined the planting specifications under different site conditions in order to provide theoretical bases for afforestation improvements under difficult site conditions in Xinjiang arid regions. [Method]To establish the deep water and covered afforestation effect index, 4 kinds of specifications for the deep groove catchment effect, post-precipitation water storage ability on soil, and forest growth status were investigated. [Result]The optimal depth for planting was 60-80 cm; within this range, the deeper the planting furrow, the better the catchment and storage effects will be. On the other hand, 60 cm deep groove mixing with straw mulch created the largest amount of tree growth in the forest. [Conclusion]Sixty centimeters deep grooves mixing with straw mulch produced the largest amount of tree growth in the forest. Proper trench depth, created for afforestation, improved forest growth rate and provided favorable environment that promotes tree growth.%[目的]确定不同立地条件下的深沟造林规格,为新疆干旱区风沙砾石戈壁区造林提供理论依据.[方法]建立深沟集水和覆盖造林效果指标,对4种规格的深沟集水效果、降雨后土壤蓄水保水能力及林木生长状况进行研究.[结果]60～80 cm为深沟造林的适宜深度,在此范围内,造林沟越深,集水和蓄水效果越好；60 cm深沟结合秸秆覆盖林木生长量达最大.[结论]适宜深度的开沟造林给林木生长创造了一个良好的生长环境,能有效促进林木生长.
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