| 膜下调亏滴灌对制种玉米耗水规律及产量的影响 |
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| 引用本文： | 郭松年,张芮.膜下调亏滴灌对制种玉米耗水规律及产量的影响[J].灌溉排水学报,2009,28(3). |
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| 作者姓名： | 郭松年 张芮 |
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| 作者单位： | 甘肃农业大学工学院,兰州,730070
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| 摘 要： | 通过大田膜下调亏滴灌试验,测定了制种玉米叶面积指数、耗水量和产量等指标。结果表明,拔节—抽穗期缺水抑制了叶面积的生长,对产量负面影响极为显著,水分利用效率显著降低;灌浆—成熟期缺水对叶面积指数和产量影响甚微,而水分生产效率却显著提高,通过建立产量与叶面积指数以及叶面积指数与日耗水强度模型,提出了在抽穗期充分供水,苗期和成熟期减小供水、保持适度的水分亏缺的制种玉米节水高产水分调控模式。
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| 关 键 词： | 制种玉米 产量 调亏滴灌 |
Effect of Regulated Deficit Drip Irrigation on Water Consumption and Yield of Plastic Film Mulched Corn for Seed |
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| GUO Song-nian,ZHANG Rui.Effect of Regulated Deficit Drip Irrigation on Water Consumption and Yield of Plastic Film Mulched Corn for Seed[J].Journal of Irrigation and Drainage,2009,28(3). |
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| Authors: | GUO Song-nian ZHANG Rui |
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| Affiliation: | College of Engineering;Gansu Agricultural University;Lanzhou 730070;China |
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| Abstract: | Leaf area,water consumption and yield of corn were investigated with a field experiment of regulated deficit drip irrigation with plastic film mulched.The results showed that drought stress restrained leaf area(LAI) and yield significantly at jointing-tasseling stage,and the water use efficiency(WUE) was decreased under drought stress.The impact of drought stress to LAI and yield was very little at filling-mature,but WUE was higher than normal water supply.Through Y-LAI and LAI-ET/t model,seed corn's soil moisture-controlling mode that means supply enough water to corn at tasseling stage,decrease water supply and maintain appropriate water deficit at maturity was proposed to achieve water-saving and high-yielding. |
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| Keywords: | corn for seed yield regulated deficit drip irrigation |
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