深沟秸秆覆盖对造林地土壤蓄水能力的影响

Effect of Straw Mulching in Deep Groove on Water Storage Capacity of Afforestation Soil

对造林地进行深沟秸秆覆盖,可降低土壤蒸发量,增加土壤蓄水空间和能力,提高降水的利用率,是缓解干旱半干旱地区造林水分匮乏的有效措施。在位于干旱区的塔城盆地老风口生态区,进行了造林地深沟覆盖秸秆的试验研究,结果表明,秸秆覆盖条件比未覆盖的土壤蒸发量明显降低,含水率显著增高,随着深沟加深和覆盖厚度的增加,抑制土壤蒸发、蓄水保墒的效果越显著。

Straw mulching in deep groove on afforestation land which should reduce soil evaporation and increase storage space ＆ capacity soil water and improve the utilization of precipitation, is effective measure to alleviate arid and semiarid afforestation regions for the lack of water. The experiments of straw mulching in deep groove on afforestation land were conducted in the arid Laofengkou ecological zones of Tacheng Basin. Result shows that ： soil evaporation of the land with straw mulching is significantly lower than that with non-covered, water content was significantly higher than that without straw mulching;effect of inhibition of soil evaporation ＆ soil and water conservation are more significant with the deepening of deep groove and increase of cover thickness.