| Effect of different irrigation regimes to the soil water transport, yield and quality of cotton by machine-picking |
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| DOI：10.7606/j.issn.1000-7601.2013.06.012 |
| Key Words: cotton by machine-picking drip irrigation under film mulch irregation frequency irrigation quota soil moisture yield quality |
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| Abstract: |
| Through the field experiment of drip irrigation under film mulch of cotton by machine-picking in southern Xinjiang in 2012, taking the evaporation as for the irrigation control index, has researched the influences of irrigation frequency and irrigation quota to the soil moisture, cotton yield and quality, and then analyzed the effects of water saving, yield increasing and quality adjusting by different irrigation regime. The results shown that: Under the same irrigation frequency, the soil water content increased with the increase of irrigation amount; Under the same irrigation amount, when irrigated frequency was 5 days, the average soil moisture content in soil layer of 0～60
cm under film mulch was higher; Effect of different cotton irrigation regimes on both water use efficiency and irrigation water use efficiency have significant difference. When the irrigated frequency was 5 days and crop-evaporation pan coefficient was 0.6, the water use efficiency and irrigation water use efficiency of cotton were reached 1.96 kg·m-3 and 3.08 kg·m-3, respectively. The cotton production goals of water saving, high yield and high quality can be achieved. |
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