| Effects of stubble and mulching modes on soil evaporation and soil water content |
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| DOI：10.7606/j.issn.1000-7601.2012.03.01 |
| Key Words: stubble mode stubble with mulching mode soil water content soil evaporation |
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| Abstract: |
| Straw mulching has important effects on soil evaporation and soil water eontent. Different stubble height and
mulching quantity was set to study the effects of these practices on soil water content and soil evaporation after winter wheat harvest. The results showed that remaining stubble height of 0~35 cm had minor effects on soil water content and soil evaporation. However, mulching practices eaused a significant reduetion of soil evaporation. During the experimental period(31 d), the total amount of soil evaporation reduced by 16%~51% under mulching quantity of 0.348~0.470 kg/m2 as compared to no mulching when stubble height was0~15 cm. In eonsideration of the feasibility of machine harvest for wheat, the recommended mode is leaving stubble height of 5~15 cm and mulching remaining straw on soil surface,so as to reduce soil evaporation and increase soil water use efficiency. |
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