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| DOI： |
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| Effect of Different Irrigation Quota on Water Consumption Characteristics and Yeld of Wheat |
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CHEN Kaili， ZHAO Jinghua， HUANG Hongjian， MA Yingjie, YANG Lei
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College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China; Aletai water resources management office, Aletai 836500, China
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| Abstract: |
| Through field experiment, the water consumption of wheat under drip irrigation with different irrigation quota was investigated. The results showed that the daily water consumption of wheat presented a Bimodal curve change in different treatments, the total water consumption increased firstly and then decreased. Under relatively sufficient irrigation condition, water consumption intensity from small to large was full ripe stage < jointing stage < heading flowering period < booting stage < milk stage < filling stage.The water stress in jointing stage was beneficial to wheat water use efficiency and grain number per spike. The water consumption of filling stage was very important for final output. Research result indicated that T1 (225 m3/hm2), T2 (300 m3/hm2), T3 (375 m3/hm2) treatment were treated with moderate or severe water stress during wheat growth, and the yield of wheat was reduced with low water consumption. A comprehensive comparison was made among T4 (450 m3/hm2), T5 (525 m3/hm2) and T6 (600 m3/hm2) treatment, T5 treatment was the most favorable treatment of water saving and production increasing. The test results could provide reasonable reference for the optimal irrigation system of drip irrigated wheat in the north Xinjiang. |
| Key words: drip irrigated wheat; irrigation quota; water consumption law; yield |
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