| New approach for increasing irrigation water penetration into soil during water added corn seeding |
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| DOI：10.7606/j.issn.1000-7601.2013.06.042 |
| Key Words: water added seeding water evaporation subsoil irrigation water infiltration depth water saving |
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| Abstract: |
| Based on knowledge of mechanical theory and structure of soiling tools, the authors calculated optimal subsoiling condition（distance of successive cutting points from 50 and 70 mm） and tested the hypothesis by irrigation model using the novel horizontal type subsoiling technique. The results showed that the depth of water penetration increased at least 20 mm more than untilled soil or ploughed soil by rotary tillage. In addition, the top of the wetted soil was 13 mm away from the surface of soil and the ratio of horizontal infiltration distance to vertical infiltration depth of irrigation water decreased from 1.3 to 0.8. By the virtue of this current technique, the density
and water percentage of soil meet the requirement of seeding corn by water. In conclusion, the present technique increased the depth of water penetration and reduced water evaporation effectively during water added corn seeding. |