| The research of film-straw mulching pattern on soil nutrient content in an apple orchard |
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| DOI：10.7606/j.issn.1000-7601.2016.06.28 |
| Key Words: apple orchard film-straw mulching double mulching soil nutrient soil profile Weibei dryland |
| Author Name | Affiliation | | CAI Ming-yang | Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China | | XIE Yong-sheng | Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling, Shaanxi 712100, China | | SUO Gai-di | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | DING Xin-hui | Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling, Shaanxi 712100, China
University of Chinese Academy of Science, Beijing 100049, China |
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| Abstract: |
| In order to investigate the influence of film-straw mulching pattern on soil nutrient content in an apple orchard of Weibei dryland, soil nutrient content across the 0～100 cm soil profile under five mulching treatments, including plastic film covering maize straw, plastic film covering short wheat straw, long wheat straw covering plastic film, plastic film covering long wheat straw and a non-mulching control, was measured and the apple yield was recorded as well. Results showed that film-straw mulching pattern could significantly increase the average soil nutrient content and nutrient availability. The treatment of plastic film covering short wheat straw showed the best comprehensive effect. Its content of soil organic matter, total nitrogen, alkali-hydrolysable nitrogen, available phosphorus and available potassium were significantly higher than those of the non-mulching control by 29.72%、8.82%、19.35%、51.87% and 22.66%, respectively (P<0.05). The increasing percentage of alkali-hydrolysable nitrogen content was higher than that of total nitrogen content, indicating that the pattern could increase the availability of nitrogen fertilizer. However, compared to the control, film-straw mulching pattern had no significant effect on the vertical variation of soil nutrient content along the profile. They all showed a trend that soil nutrient content decreased at first and then increased slowly with soil depth. It could be speculated that with the improvement of soil nutrient content and nutrient availability, the mulching mode of plastic film covering short wheat straw could be used as one of the most effective measures that is helpful in reaching high yield, excellent quality and dependable crop in Weibei dryland. |
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