| Effects of whole film mulching with soil covering and bunch planting on soil water in field of dry-land wheat |
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| DOI：10.7606/j.issn.1000-7601.2013.04.014 |
| Key Words: dry-land whole film mulching soil covering bunch planting wheat water |
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| Abstract: |
| A field experiment was carried out to investigate the effects of different film mulching modes on soil water in field of dry-land wheat. The results showed that, during the early growing season of wheat, the soil water content in different layers was consistently ordered as: whole film mulching with soil covering and bunch planting (WFM)＞furrow planting beside film (FPF)＞no-mulching cultivation (CK). During jointing to booting stage, the soil water content in 0～20 cm layer under WFM and FPF was increased by 4.6%～5.2% and 2.2%～2.3% respectively, compared with that under CK; the soil water storage in 1 m layer under WFM and FPF was increased by 29.0～48.0 mm and 12.9～20.4 mm respectively, compared with that under CK. The technology of WFM also increased rainfall use rate and water use efficiency remarkably. The highest and average rainfall use rate under WFM was 74.1% and 71.0% respectively, and the highest and average water use efficiency under WFM was 19.58 kg·mm-1·hm-2 and 18.33 kg·mm-1·hm-2 respectively. Therefore, it made a key breakthrough for highly efficient rainwater utilization in the field of dry-land wheat. |
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