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当前位置: 首页 > 文章 > 不同灌水量下出水口数量对畦灌水流推进和小麦产量的影响 节水灌溉 2020 (5) 43-48
Position: Home > Articles > Effects of Outlet Number on Border Irrigation Flow Propulsive and Wheat Yield under Different Irrigation Amount Water Saving Irrigation 2020 (5) 43-48

不同灌水量下出水口数量对畦灌水流推进和小麦产量的影响

作  者：
王丽玄;王利书;程东娟
单  位：
关键词：
冬小麦;畦灌;灌水量;出水口数量;水流推进;耗水特性;冬小麦产量
摘  要：
为探讨不同灌水量下出水口数量对畦灌水流推进和小麦产量的影响,进行了冬小麦大田试验。设置60和75 mm 2种灌水量,分别用W1和W2表示,设置1孔、2孔、3孔3种出水口数量,分别用D1、D2、D3表示,测定了水流推进时间、各生育时期的剖面含水量和产量,研究了各处理小麦的耗水特性。结果表明:水流推进时间随着出水口数量的增大而增大,拔节期各处理下的水流推进的耗时明显比返青期的短。W2D2处理灌水后畦田内土壤平均含水量变异系数最低,土壤水分分布更均匀。W2D2处理在生育前期储水量较大,后期土壤贮水消耗量大于其他处理。同一灌水量下,返青至拔节期和拔节至扬花期D1和D3的耗水量、耗水强度和耗水模系数高于D2处理,扬花至灌浆期D2的耗水量、耗水强度和耗水模系数显著高于其他处理。各生育期耗水量随灌水量的增加而增加。W2D2处理的产量指标均高于其他处理且水分利用效率最高。综合考虑灌水均匀度、产量、水分利用效率,W2D2是本试验条件下最优处理。
译  名：
Effects of Outlet Number on Border Irrigation Flow Propulsive and Wheat Yield under Different Irrigation Amount
作  者：
WANG Li-xuan;WANG Li-shu;CHENG Dong-juan;Hebei University of Engineering;
关键词：
wheat;;border irrigation;;irrigation amount;;number of outlet;;flow propulsion;;water consumption characteristics;;wheat yield
摘  要：
In order to study the effect of the number of water outlets on the water flow and the yield of wheat, a field experiment of winter wheat was carried out. The water-consumption characteristics of wheat were studied by means of water-flow propulsion, cross-section water content and yield in each period of growth, respectively, by setting up the irrigation water amount of 60 mm and 75 mm, respectively represented by W1 and W2, and three kinds of water outlet quantity of 1 hole, 2 hole and 3 hole were set, respectively represented by D1, D2 and D3. The results showed that: the time of water flow propulsion increased with the increase of the number of water outlets, and the time of water flow propulsion under each treatment in the jointing period was obviously shorter than that in the return period. The variation coefficient of average soil water content was the lowest and the distribution of soil water of W2 D2 treatment was more even in the furrow. W2 D2 treatment had a large amount of water storage in the early stage of growth, and the water storage consumption in the later stage was greater than that of other treatments. Under the same irrigation amount, the water consumption, water consumption intensity and water consumption mode coefficient of D1 and D3 in the period from return to jointing and the period from jointing to flowering were higher than those of D2 treatment, while the water consumption, water consumption intensity and water consumption mode coefficient of D2 in the period from flowering to filling were significantly higher than those of other treatments. The water consumption increased with the increase of irrigation water amount. The yield indexes of W2 D2 treatment were higher than those of other treatments and its water use efficiency was the highest. Considering the irrigation uniformity, yield and water use efficiency, W2 D2 was the optimal treatment under the test conditions.

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