Study On Biological Mulching Technology And Benefit Analysis In Shanxi Province

Shanxi Province, at the east of the Loess Plateau, is located in the typical semi-arid region in northern China. There are several factors that restrict the agricultural development of Shanxi Province, such as drought, shortage of water resource, low efficiency of water utilization, serious soil erosion, and infertile soils etc. However the plentiful labor resources and ample energy are the advantages for dry farming development in Shanxi Province. In order to develop the advantages, avoid the shortcomings and promote agricultural production, the biological mulching technology has been testing, demonstrating, and spreading in main crop area in Shanxi Province since 1989. Now, biological mulching technology has become a set of complete agricultural technology system with very many remarkable profits in dry farming area.The thesis illustrated the field experiments of biological mulching, such as wheat straw mulching technique, and corn straw mulching technique, and orchard straw mulching technique, explained the technical step of biological mulching technology, analyzed the benefit and investment of biological mulching technology, and summarized the mechanism of increasing yield of biological mulching technology. The study on the mechanism of increasing yield of biological mulching technology illustrated that biological mulching technology influenced agricultural ecosystem environment and crop growth.Finally the paper indicated that that biological mulching technology is the best choice for dry farming and should be extended over large area in the semi-arid region of Shanxi province...