| The soil water effects of different mulching cultivation patterns in triple cropping dry-land on southwest plateau |
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| DOI：10.7606/j.issn.1000-7601.2016.04.28 |
| Key Words: triple cropping in dry-land mulching cultivation soil water effects seasonal arid region in southwest plateau |
| Author Name | Affiliation | | HU Bing-hui | Environmental Science and Engineering College, Southwest Forestry University, Kunming, Yunnan 650224, China | | WANG Wei | Computer and Information College, Southwest Forestry University, Kunming, Yunnan 650224, China | | ZHANG Hong-fang | Environmental Science and Engineering College, Southwest Forestry University, Kunming, Yunnan 650224, China | | ZHANG Zhi-yong | Environmental Science and Engineering College, Southwest Forestry University, Kunming, Yunnan 650224, China |
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| Abstract: |
| Based on mulching experiments through triple cropping in dry-land of seasonal arid region of southwest plateau, the water effects of different treatments were studied. The results showed that straw and plastic film mulching played a very important role in increasing and reserving soil water. The dual mulching mode with plastic film and straw displayed prominent function, root region was proved to be key region on crop consuming water and soil reserving water. The changes of farmland water were divided into 3 layers: 0～30 cm soil layer that was the active changing layer for soil water content and the obvious changing layer for reserving soil water, 30～80 cm soil layer that was the subordinate active changing layer for soil water content and the significant changing layer for reserving soil water, and 80～100 cm soil layer that was the relative steady changing layer for soil water content and the relative general changing layer for reserving soil water. Furthermore, mulching cultivation could impel the crop consuming water converted into effective crop transpiration consuming water from useless evaporation consuming water, and the availability of farmland water was promoted clearly. Thus, the study on water effects of mulching through triple cropping patterns in dry-land will allow the enhancements of multiple crop index, water use efficiency and water production potentiality in seasonal arid area of southwest plateau. |
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