| Study on micro ridge-furrow film mulching cultivation techniques of faba bean and flax rotation in dryland farming areas |
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| DOI：10.7606/j.issn.1000-7601.2018.06.19 |
| Key Words: faba bean flax crop rotation whole field surface plastic mulching and micro ridge-furrow planting bunch-seeding reserved plastic films no-till planting dryland faming |
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| Abstract: |
| To explore the micro ridge-furrow mulching cultivation techniques for faba bean and flax rotation in dryland farming areas, a field experiment was conducted with four treatments including 1) rotation of faba bean followed by flax with micro ridge-furrow covered by white plastic film (T1); 2) the same as T1 but with black plastic film (T2); 3) the same as T1 but double micro ridge-furrow (T3); 4) furrow-seeding without mulching (T4). We studied the effects of different treatments on the crop yield and soil thermo and moisture conditions. The results showed that T1 significantly increased soil moisture content and raised soil temperature and also improved agronomic characters of faba bean and flax. As a result, it significantly increased yield and economic return of faba bean and flax. Compared with T2, T3, and T4, T1 increased water use efficiency of faba bean by 24.4%, 55.5%, and 188.4% over them, and water use efficiency of flax by 15.0%, 19.9%, and 156.1%, respectively. Additionally, T1 increased yield of faba bean by 23.8%, 54.9%, and 186.2% and yield of flax by 14.9%, 19.6%, and 154.3% over other 3 treatments, respectively. Therefore, the rotation of faba bean followed by flax with micro ridge-furrow covered by white plastic film is an optimal cropping system for stable and high production of dryland faba bean and flax. |
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