地瓜有较强的抗旱性,适应喀左县的气候条件。近几年来,种植面积不断扩大,推广了地膜覆盖技术,收到了一定的效果。但由于年际之间气候条件变化较大,有的年份就严重地影响了地瓜的产量。这就需要进一步搞清地瓜产量形成与气象条件的关系、地瓜盖膜增温保墒的作用及不同时期揭膜对提高产量的影响 Sweet potatoes have a stronger drought resistance, climate conditions to adapt to Kazuo. In recent years, planting area has been expanding, to promote the mulching technology, has received some results. However, due to the large climatic changes between years, some years have seriously affected the production of sweet potatoes. This requires further clarification of the relationship between the production of sweet potato and the meteorological conditions, the effect of warming and preserving the soil moisture of sweet potato, and the effect of uncovering the film on the yield in different periods