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| DOI：10.13522/j.cnki.ggps.2022164 |
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| Experimental Study on Summer Maize Flooding Based on Different Soil Types and Different Drainage Conditions |
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GAO Zile, SUN Jinkai
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Huibei Water Conservancy Scientific Test Station of East
Henan Water Conservancy Engineering Administration, Kaifeng 475000, China
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| Abstract: |
| 【Objective】This paper studies the effect of flooding on summer maize and determines the drainage requirement of summer maize after flooding. 【Method】The flooding experiment was carried out on Summer Maize in heading stage under different soil types by using bottom test pit, and the effects of different flooding duration and soil porosity up to 10% on yield loss were analyzed. 【Result】The yield loss of summer maize with underground drainage was less than that without underground drainage. The yield reduction rate of summer maize is 3.0%~33.3% when the test pit with underground drainage condition was flooded for 2~5 d, and 8.5%~25.5% when the test pit without underground drainage condition was flooded for 2~4 d; Under the condition of underground drainage, the yield loss of Summer Maize in different soils was the largest in clay, and the rest was loam, sandy loam and sandy soil in turn. When there was no underground drainage, the yield loss of sandy loam was the largest, sandy soil was the smallest, and loam and clay were between the first two kinds of soil. 【Conclusion】The yield of summer maize decreases with the increase of flooding time after flooding in tasseling stage. Different soil types and underground drainage conditions also determine the loss of yield reduction of summer maize. |
| Key words: summer maize; soil type; flooding duration; drainage; yield |
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