越南江省沿海低地稻田对气候变率的适应

Q4 Agricultural and Biological Sciences
Bodenkultur Pub Date : 2023-03-01 DOI:10.2478/boku-2023-0003
Thai D. Phung, Truong A. Dang
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引用次数: 0

摘要

在全球范围内,由于气候变化(ICV)的影响,沿海种植区(ccr)正面临灌溉用水短缺的问题。ccr一再遭受灌溉水含盐、温度升高和降雨量减少,导致灌溉水短缺。因此,本研究的目的是评估天气变量对江西省ccr水稻需水量的影响。通过模拟AquaCrop模型,估算了不同种植周期下水稻产量对天气变量的响应。与目前冬春(WS)和夏秋(SF)植被季节的常规播种日期(基线)相比,这些计划涉及将播种日期提前或推迟30天。在验证和校准过程中,统计误差指标的高相关值表明,AquaCrop模型具有准确的模拟能力。研究结果表明,与基线相比,当CCSs在WS植被季节提前20天播种和SF植被季节提前20天播种时,水稻产量可提高7.8%和5.6%。总体而言,在考虑天气变量的情况下,调整研究区沿海稻田的CCSs将通过减轻ICV的不利影响而产生积极的贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Adapting to climate variability for rice cultivation paddies in the lowland coastal regions of Kien Giang Province, Vietnam
Summary Globally, coastal cultivation regions (CCRs) are facing irrigation water shortages due to the impacts of climate change (ICV). CCRs have repeatedly suffered from saline irrigation water, increases in temperature, and reduced rainfall, resulting in irrigation water shortages. The aim of this study was, therefore, to evaluate the impacts of weather variables on the rice water requirement (RWR) in CCRs in Kien Giang Province. The response of rice grain yield to weather variables was estimated by simulating the AquaCrop model under different crop cultivation schedules (CCSs). These schedules involved advancing or delaying the sowing date by 30 days compared to the current common sowing date (baseline) for winter-spring (WS) and summer-fall (SF) vegetation seasons. The AquaCrop model demonstrated accurate simulation capabilities, as indicated by the high correlation values of statistical error indexes during the validation and calibration procedures. The findings revealed that rice grain yields would enhance up to 7.8% and 5.6% compared to the baseline when CCSs involve sowing 20 days earlier for WS vegetation season and are advanced by 20 days for SF vegetation season. Overall, modifying CCSs for coastal rice paddies in the study area, while considering weather variables, would have a positive contribution by mitigating the adverse effects of ICV.
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来源期刊
Bodenkultur
Bodenkultur Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
0.60
自引率
0.00%
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0
审稿时长
26 weeks
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