Lin Meiwei, Wang Lei, Lv Gaoqiang, Gao Chen, Zhao Yuhao, Li Xin, He Liang, Sun Weihong
School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China.
School of Computer Science and Technology, Xinjiang University, Urumqi 830017, China.
Plants (Basel). 2024 May 17;13(10):1403. doi: 10.3390/plants13101403.
With the changing global climate, drought stress will pose a considerable challenge to the sustainable development of agriculture in arid regions. The objective of this study was to explore the resistance and water demand of cotton plants to water stress during the flowering and boll setting stage. The experimental plot was in Huaxing Farm of Changji city. The plots were irrigated, respectively, at 100% (as the control), 90%, 85% and 80% of the general irrigation amount in the local area. The relationship between the various measured indexes and final yield under different deficit irrigation (DI) treatments was studied. The results showed that deficit irrigation impacted the growth and development processes of cotton during the flowering and boll setting stage. There was a high negative correlation ( > 0.95) between the maximum leaf area index and yield. Similarly, there was a high correlation between malondialdehyde content and yield. Meanwhile, 90% of the local cotton irrigation contributed to water saving and even increasing cotton yield. Furthermore, based on the results, the study made an initial optimization to the local irrigation scheme by utilizing the DSSAT model. It was found that changing the irrigation interval to 12 days during the stage could further enhance cotton yield and conserve resources.
随着全球气候的变化，干旱胁迫将对干旱地区农业的可持续发展构成巨大挑战。本研究的目的是探讨棉花植株在开花结铃期对水分胁迫的抗性和需水量。试验地位于昌吉市华兴农场。试验小区分别按当地常规灌溉量的100%（作为对照）、90%、85%和80%进行灌溉。研究了不同亏缺灌溉（DI）处理下各测定指标与最终产量之间的关系。结果表明，亏缺灌溉影响棉花开花结铃期的生长发育进程。最大叶面积指数与产量之间存在高度负相关（>0.95）。同样，丙二醛含量与产量之间也存在高度相关性。同时，当地棉花灌溉量的90%有助于节水甚至提高棉花产量。此外，基于研究结果，利用DSSAT模型对当地灌溉方案进行了初步优化。结果发现，在此阶段将灌溉间隔改为12天可进一步提高棉花产量并节约资源。
