| The effect of minimum tillage and mulching on soil temperature and WUE of maize under different irrigation levels |
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| DOI：10.7606/j.issn.1000-7601.2017.01.23 |
| Key Words: one time plastic mulch used for 2 years minimum and no tillage irrigation level soil temperature water use efficiency |
| Author Name | Affiliation | | ZHAO Cai | Gansu Provincial Key Laboratory of Arid Land Crop Science/Faculty of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHEN Gui-ping | Gansu Provincial Key Laboratory of Arid Land Crop Science/Faculty of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHAI Qiang | Gansu Provincial Key Laboratory of Arid Land Crop Science/Faculty of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YU Ai-zhong | Gansu Provincial Key Laboratory of Arid Land Crop Science/Faculty of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YIN Wen | Gansu Provincial Key Laboratory of Arid Land Crop Science/Faculty of Agronomy Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| A field experiment of maize was conducted to evaluate the effect of different film mulching patterns (one time plastic mulch used for 2 years, no tillage in fall and mulching in spring, traditional mulching) on soil temperature and WUE under different irrigation levels, with the aims of providing a better understanding of optimization of maize cropping system, film mulching re-utilization, and increasing of water use efficiency in oasis irrigation area. The results showed that the treatment of plastic mulching once and used for 2 years increased the soil temperature, but it was significantly lower than the treatment with new film mulching between seeding and jointing stage of maize. The mean temperature of 0～25 cm profile soil in treatment with one time plastic mulch used for 2 years was 13.35% lower than the temperature in traditional mulching treatment. However, no significant effect was found on soil temperature during the maize jointing to maturation stage. And no significant difference on soil accumulated temperature of 0～25 cm profile under different film mulching patterns, but there was significant difference under the different irrigation levels. Compared with the other two mulching patterns, the grain yield and WUE were not significantly different from the treatment with one time plastic mulch used for 2 years, however, the WUE reached 17.89 kg·mm-1 under the medium irrigation level, the grain yield was significantly higher than the traditional film mulching treatment. The production of maize in NTMI1 treatment was 16.39% higher than CTMI1 treatment. We concluded that the treatment with one time plastic mulch used for 2 years had a lower warming effect than the treatments with new film mulching, but did not affect the forming of seed of maize, it could also decrease the drought pressure and increase the yield potential and be considered as a new advanced technique of maize cropping system for both economic and ecological benefits in northwest oasis irrigation area of China. |
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