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于2009和2010年采取常规灌溉、固定隔沟灌溉和交替隔沟灌溉3种灌溉方式,设置15、22.5和30 mm 3个灌水量,考察灌溉方式及灌溉量对大豆产量、植株性状、品质及土壤水分利用率(WUE)的影响。结果表明:2009年干旱条件下,灌水可极显著提高土壤水分利用效率和大豆产量,而且产量随灌水量的增加而显著增加,交替隔沟灌溉22.5 mm的产量、单株荚数、单株粒重和WUE均高于其它灌溉处理。2010年降雨相对较多,灌溉处理的产量均高于对照,以交替隔沟灌溉22.5 mm产量最高,相同水量不同灌溉方式间产量差异不显著。交替隔沟灌溉22.5 mm的单株荚数、单株粒数和WUE都极显著高于其它处理。灌溉使大豆蛋白质含量提高,脂肪含量降低,但差异不显著。综合考虑,大豆生育期间最佳灌溉组合为交替隔沟灌溉22.5 mm。
In 2009 and 2010, three kinds of irrigation methods: conventional irrigation, fixed-furrow irrigation and alternate furrow irrigation were adopted. Three irrigation amounts of 15, 22.5 and 30 mm were set up. The effect of irrigation methods and irrigation on soybean yield, plant traits, Effects of soil water use efficiency (WUE). The results showed that irrigation could significantly increase soil water use efficiency and soybean yield under drought conditions in 2009, and the yield increased significantly with the increase of irrigation volume. The yield of 22.5 mm irrigation with alternate furrow irrigation, pods per plant, Both WUE and WUE are higher than other irrigation treatments. The rainfall in 2010 was relatively high, and the yield of irrigation treatment was higher than that of CK. The yield of 22.5 mm was the highest in alternate furrow irrigation. The yield of different irrigation methods with the same amount of water was not significantly different. Alternate furrow irrigation of 22.5 mm per plant pods, grain number and WUE per plant were significantly higher than the other treatments. Irrigation increased soybean protein content, fat content decreased, but the difference was not significant. Taken together, the best irrigation during the growing period of soybean alternate furrow irrigation 22.5 mm.