生态学杂志2017，Vol.36Issue(9)：2514-2520,7.DOI:10.13292/j.1000-4890.201709.011
辽西半干旱区浅埋式滴灌对春玉米耗水特性及产量的影响
Effect of shallow-buried drip irrigation on water consumption characteristics and yield of spring maize in semi-arid region of western Liaoning
摘要
Abstract
A micro-plot field experiment with automatic rain shelter was carried out to study the effect of irrigation quota on water consumption characteristics,grain yield and water use efficiency (WUE) of maize by shallow-buried drip irrigation (SDI) in a semi-arid region of western Liaoning.The results showed that the water consumption of maize under SDI displayed a fluctuating trend during the whole growth period.The water consumption was larger during the jointing to heading and filling to harvesting stages,and a larger water consumption intensity was observed at the jointing to heading and heading to filling stages.With the increase of irrigation quota,the grain yield of different treatments increased;the increase of 100-grain weight and grains per spike were the main reasons for the increase of grain yield.Compared with the conventional furrow irrigation (CFI),SDI with an irrigation quota of 2908.0 m3 · hm-2 reduced the irrigation amount by 30％,the grain yield decreased by only 3.4％ (no significant difference),but the water use efficiency (WUE) and irrigation water use efficiency (IWUE) increased by 22.1％ and 27.5％,respectively.There was a quadratic parabola relationship between grain yield and irrigation quota.When the irrigation quota was less than 3816.4 m3 · hm-2,the grain yield increased with irrigation quota until the maximum yield 12161.9 kg · hm-2.However,the grain yield decreased as irrigation quota over 3816.4 m3 · hm-2.With a comprehensive consideration of grain yield,WUE and IWUE,a SDI irrigation quota of 2908.0-3816.4 m3 · hm-2 would be appropriate in the semiarid region of western Liaoning.关键词
半干旱区/春玉米/浅埋式滴灌/耗水特性/产量/水分利用效率Key words
semi-arid region/spring maize/shallow-buried drip irrigation/water consumption characteristics/yield/water use efficiency引用本文复制引用
郭金路,谷健,尹光华,李雪..辽西半干旱区浅埋式滴灌对春玉米耗水特性及产量的影响[J].生态学杂志,2017,36(9):2514-2520,7.基金项目
国家科技支撑计划课题(2013BAD05B07)、国家重点研发专项(SQ2017YFNC050001)、国家公益性行业(农业)专项(201303125)和中华环境保护基金项目“123工程”(CEPF2014-123-2-12)资助. （2013BAD05B07）
