| Effects of soil moisture monitoring based supplemental irrigation on the yield, quality and water consumption characteristics of Xinmai 26 |
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| DOI：10.7606/j.issn.1000-7601.2019.06.14 |
| Key Words: winter wheat supplemental soil moisture measurement based irrigation yield quality water consumption characteristics |
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| Abstract: |
| In this study, a high\|quality wheat variety, Xinmai 26, was used for field trials in 2015-2016 season. The targeted relative water contents were set as 70% (W70), 75% (W75), and 80% (W80) of field capacity at the jointing and flowering stages. The W70, W75, W80, and a traditional irrigation (Wck) were applied by three kinds of sputum irrigation at different growth stages and the total growth period (W0) was used as a control to study the yield and quality of winter wheat. The results showed that the supplementary irrigation amount on winter wheat at jointing and flowering stages ranged in the order of Wck>W80>W75>W70. The soil water consumption of winter wheat under four irrigation treatments was mainly distributed in 0~80 cm soil layer and the supplemental irrigation based on the soil moisture monitoring data increased the consumption of the proportion of soil water. The wet gluten content of winter wheat under three mulching irrigation treatments was significantly higher than that under Wck. The water use efficiency was ranked as W75>W70>W80>Wck>W0. The difference among W70, W75, and W80 was not significant while the grain yield under W75 treatment was significantly higher than that of W70. Considering the different treatments of irrigation amount, grain yield, and water use efficiency, it is concluded that W75 at growth critical stages, jointing and flowering, was the optimum water content for high yield and water saving in winter wheat growth season. |
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