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在滴灌、隔沟交替灌溉和传统沟灌3个灌溉处理下,对中甘22号和秋甘3号的土壤水分变化、生物学性状、经济产量和水分利用效率等指标进行了系统研究。结果表明,与传统沟灌相比,滴灌处理灌溉水节约20.2￣27.8m3/667m2,经济产量增加24%￣27%,水分利用效率提高9.0￣9.4kg/m3,水分生产效益增加14.4￣15.1元/m3;隔沟交替灌溉处理灌溉水节约43.4￣47.9m3/667m2,经济产量无显著变化,水分利用效率增加6.0￣6.5kg/m3,水分生产效益增加9.6￣10.4元/m3。与传统灌溉相比,隔沟交替灌溉的外叶重量比有减少的趋势,中心柱有变短变粗的趋势,地上生物量显著减少,减少97￣110g,减少6.1%￣6.8%。隔沟交替灌溉的根展辐和根重比滴灌和传统灌溉的处理都有增加的趋势。
Under the three irrigation treatments of drip irrigation, alternate ditch irrigation and conventional furrow irrigation, the soil moisture changes, biological characters, economic yield and water use efficiency of Zhonggan 22 and Qiugan 3 were systematically studied. The results showed that compared with traditional furrow irrigation, irrigation drip irrigation saved 20.2-27.8m3 / 667m2, economic yield increased by 24% ~ 27%, water use efficiency increased by 9.0 ~ 9.4kg / m3, water production efficiency increased by 14.4 ~ 15.1 yuan / m3; irrigation efficiency of 43.4 ~ 47.9m3 / 667m2 for alternate ditches irrigation was saved, no significant change in economic output, water use efficiency increased 6.0 ~ 6.5kg / m3, water production efficiency increased by 9.6 ~ 10.4 Yuan / m3. Compared with the conventional irrigation, the ratio of the outer leaves of alternate irrigation ditch decreased, the center column had the tendency of shortening and thickening, and the aboveground biomass decreased significantly, reducing by 97-101g and decreasing by 6.1% -6.8%. The root extension and root weight of alternate irrigation in the furrows tended to increase compared with that of drip irrigation and conventional irrigation.