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基于AquaCrop模型的南疆無膜滴灌棉花灌溉制度優(yōu)化
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國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目（2016YFC0400208）、國家自然科學(xué)基金重大項(xiàng)目（51790534）和兵團(tuán)科技攻關(guān)項(xiàng)目（2018AB027）


Irrigation Scheduling Optimization of Drip-irrigated without Plastic Film Cotton in South Xinjiang Based on AquaCrop Model
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    摘要:

    為探究AquaCrop模型對(duì)南疆地區(qū)無膜滴灌棉花種植的適用性,、尋求最優(yōu)灌溉制度,，以2018—2019年田間實(shí)測(cè)數(shù)據(jù)對(duì)模型進(jìn)行校驗(yàn)，并利用校準(zhǔn)模型分別模擬2種不同灌水情景下的棉花冠層覆蓋度,、生物量及產(chǎn)量的變化規(guī)律,。結(jié)果表明：采用AquaCrop模型模擬2019年冠層覆蓋度的均方根誤差（RMSE）、擬合指數(shù)（d）,、標(biāo)準(zhǔn)均方根誤差（NRMSE）及決定系數(shù)（R2）分別為6.03%,、0.12、13.08%和0.97,，生物量模擬的各參數(shù)分別為810kg/hm2,、0.93、6.41%和0.80,，產(chǎn)量模擬的各參數(shù)分別為751kg/hm2,、0.84、14.02%和0.87,，說明AquaCrop模型可以較好地模擬南疆地區(qū)無膜滴灌棉花的生長與產(chǎn)量,。基于1960—2019年的氣象數(shù)據(jù),，利用AquaCrop模型對(duì)無膜滴灌棉花進(jìn)行情景模擬：灌水周期相同時(shí)，無膜滴灌棉花產(chǎn)量隨灌溉定額的增加呈先增加,、后減小的變化趨勢(shì),，總灌水量為7200m3/hm2時(shí)產(chǎn)量達(dá)到最大值（5398kg/hm2），水分利用效率（WUE）為0.75kg/m3,；灌溉定額相同時(shí),，無膜滴灌棉花產(chǎn)量隨灌水周期的增加而增加，總灌水量為5400m3/hm2,、灌水周期為5d時(shí),，產(chǎn)量達(dá)到最大值（5315kg/hm2）、WUE為0.98kg/m3,。研究表明,，灌水周期5d,、灌溉定額540mm的灌溉制度可保證無膜滴灌棉花具有較高的產(chǎn)量和水分利用率，可作為無膜滴灌棉花的參考灌溉制度在南疆地區(qū)推廣應(yīng)用,。

    Abstract:

    To investigate the applicability of the AquaCrop model to drip-irrigated cotton without plastic film in South Xinjiang, and develop the optimal irrigation scheduling, the AquaCrop model was calibrated and validated by using the dataset collected in 2018 and 2019 seasons, then the model was used to simulate canopy cover (CC), plant biomass, and cotton yield under two different irrigation scenarios. The results showed that the root mean square error (RMSE), the fit index (d), the standard root mean square error (NRMSE) and the determination coefficient (R2) between the simulated and measured values of CC were 6.03%, 0.12, 13.08% and 0.97, and the corresponding values for plant biomass and cotton yield were 810kg/hm2, 0.93, 6.41% and 0.80, and 751kg/hm2, 0.84, 14.02% and 0.87, respectively, indicating that the AquaCrop model could be used as a feasible tool to predict cotton growth and yield response to irrigation under drip irrigation without plastic film in this region. The scenario simulation was carried out by using the AquaCrop model with the meteorological data from 1960 to 2019. The scenario simulation results indicated that under the condition of the same irrigation frequency, the cotton yield was increased first and then decreased with the increase of the irrigation quota, 〖JP3〗and the maximum yield of 5398kg/hm2 was obtained with the total irrigation amount of 7200m3/hm2, and the water use efficiency (WUE) was 0.75kg/m3. While under the condition of the same irrigation quota, the cotton yield was increased with the increase of irrigation frequency, and the maximum yield of 5315kg/hm2 was achieved with the irrigation frequency of 5d and the total irrigation amount of 5400m3/hm2, and WUE was 0.98kg/m3. It could be concluded that the high yield and WUE of drip-irrigated cotton without plastic film could be ensured by the irrigation scheduling with the irrigation frequency of 5d and the total irrigation amount of 5400m3/hm2, which could be used as a reference irrigation scheduling for application of drip-irrigated cotton without plastic film in South Xinjiang.

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王興鵬,蔣富昌,王洪博,曹輝,楊瑩攀,高陽.基于AquaCrop模型的南疆無膜滴灌棉花灌溉制度優(yōu)化[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2021,52(4):293-301,，335. WANG Xingpeng, JIANG Fuchang, WANG Hongbo, CAO Hui, YANG Yingpan, GAO Yang. Irrigation Scheduling Optimization of Drip-irrigated without Plastic Film Cotton in South Xinjiang Based on AquaCrop Model[J]. Transactions of the Chinese Society for Agricultural Machinery,2021,52(4):293-301，335.

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  • 收稿日期:2020-07-19
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  • 在線發(fā)布日期: 2021-04-10
  • 出版日期: 2021-04-10
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