Surface mulching is a good way to fight drought and conserve water for agricultural production.The paper is studied by the method of field experiment.in typical semi-arid area. The experiment was localed on the field of Wuchuan County Dry Farming Station in Inner Mongolia province from 2004 to 2005. Six treatments included: non-mulching (control), plastic film mulching, single-straw mulching in spring, double-straw mulching in spring, single-straw mulching in winter, double-straw mulching in winter. Two plants were potato and corn. Based on 1 year field experiment, the effects of surface mulching on the soil was studied and analyzed systemically. The main results included: 1. Surface mulching could reduced soil evaporation and maintain higher soil water content by avoiding soil water losses. The effect of straw mulching was more obvious. 2. The effect of different surface mulching treatments to topsoil temperature appeared: surface mulching could preserve and increase soil temperature in the period of low-temperature, straw mulching had
展开▼
