Effects of Different Soil Micro-Catchment Pattern on Soil Moisture and Heat in the Semi-Arid Area of Western Liaoning Province

This study focuses on the outstanding issues of the serious lack of water resources in semi-arid area of western Liaoning province. Traditional cropping patterns as contrast, studied the effect of unary or binary coverage of three micro-catchment patterns, which were ridge film mulching and furrow seeding (T1), groove ridge mulch film (T2), ridge ditch straw mulching cultivation (T3). Compared with the traditional pattern, micro-catchment patterns have obvious water gathering effect. This experiment, T2 of the best water conservation and water harvesting, compared to the traditional pattern, the average soil moisture content improve 2.38% in the growth period. Followed by T3, improves 1.71%. The third was Tr1, improve 1.43%. Micro-catchment can be avoided the drought of soil deeply by covering mulching film. 63mm precipitation can effectively improve 0-80cm soil moisture. While gullies covering film or direct planting cultivation can significantly increase soil temperature. Although the straw covering did not have the role to increase the soil temperature, the soil temperature was more close to the traditional cropping pattern. Compared with the traditional pattern, the average soil temperature of T2 increased by 2.42°C, T1 increased 1.99°C, T3 reduced 0.21°C.