| 任聪哲,范文波,乔长录,王世威,李顺顺,刘雨.基于AquaCrop模型的塔额盆地夏玉米节水潜力分析[J].干旱地区农业研究,2024,(2):140~149 |
| 基于AquaCrop模型的塔额盆地夏玉米节水潜力分析 |
| Analysis of water\|saving potential of summer maize in Ta’e Basin based on AquaCrop model |
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| DOI：10.7606/j.issn.1000-7601.2024.02.16 |
| 中文关键词: 夏玉米 节水潜力 AquaCrop模型 塔额盆地 |
| 英文关键词:summer maize water\|saving potential AquaCrop model Ta’e basin |
| 基金项目:新疆生产建设兵团第九师2022年度灌溉水有效利用系数测算分析项目（0415-KH0134）；新疆生产建设兵团第九师科技计划项目（2022JS012）；国家自然科学基金（51569028，51769030，41761064） |
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| 中文摘要: |
| 以AquaCrop模型为基础，结合2021—2022年塔额盆地夏玉米实测数据，对模型部分保守参数和产量模块的标准水分生产力（WP*）和参考收获指数（HI0）进行校准与验证，通过设置起始灌水时间、灌溉定额和灌水周期三因素交叉试验，对夏玉米进行产量模拟，分析其产量与作物水分利用效率受灌溉定额和起始灌水时间的影响程度，在产量和作物水分利用效率均为较高值的前提下选择最优灌溉方案。以实际夏玉米播种面积为参考值，模拟并预测2022年及未来4年在不同灌溉方案下的夏玉米产量和节水总量，并依此分析塔额盆地夏玉米节水潜力。结果表明：（1）对AquaCrop模型作物生长模块主要参数、土壤水分胁迫参数和产量模块参数WP*和HI0进行参数率定，最终产量模块参数选择WP*=35 g·m-2、HI0=43%，2021年和2022年产量模拟相对误差值分别为1.26%和1.07%。（2）结合模型模拟得出最优灌溉方案如下：起始灌水时间5月20日，灌溉定额470 mm，灌水周期7 d，灌水11次，作物水分利用效率2.005 kg·m-3，产量9.423 t·hm-2。（3）以2022年为现状水平年，最优灌溉方案下，现状水平年和未来水平年（2022—2025年）可分别实现节水量2.1338×105、2.1826×105、2.1992×105 m3和2.2306×105 m3。 |
| 英文摘要: |
| Based on the AquaCrop model, combined with the measured data of summer maize in the Ta’e Basin in 2021-2022, the conservative parameters of the model and the standard water productivity (WP*) and the reference harvest index (HI0) of the yield module were calibrated and verified. Through the setup of a three\|factor crossover test of initial irrigation time, irrigation quota, and irrigation cycle, the yield of summer maize was simulated, and the degree to which its yield and crop water use efficiency were affected by irrigation quota and initial irrigation time was analyzed. The optimal irrigation scheme was selected under the premise that both yield and crop water use efficiency were higher values. Taking the actual summer maize sown area as a reference value, the summer maize yield and total water\|saving under different irrigation schemes in 2022 and the next four years were simulated and predicted, and the water\|saving potential of summer maize in Ta’e Basin was analyzed accordingly. The results showed that: (1) The parameter rates of the main parameters of the crop growth module, the soil water stress parameters and the yield module parameters WP* and HI0 of the AquaCrop model were determined, and the final parameters of the yield module were selected as WP*=35 g·m-2 and HI0=43%, and the relative error values of the yield simulations were 1.26% in 2021 and 1.07% in 2022, respectively. (2) Combined with the model simulation, the recommended optimal irrigation scheme is as follows: the starting irrigation time is May 20; the irrigation quota is 470 mm; the irrigation period is 7 days; the irrigation period is 11 times; the crop water\|use efficiency is 2.005 kg·m-3, and the yield is 9.423 t·hm-2. (3) Taking 2022 as the current level year, the water saving can be realized in the current level year and future level years (2022-2025) under the optimal irrigation scheme, and the water saving amounts are 2.1338×105, 2.1826×105, 2.1992×105 m3 and 2.2306×105 m3, respectively. |
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