摘要
面对全球气候变化引发的干旱和水资源短缺问题,水分调亏成为提高农田水分利用效率的有效策略。水分调亏是一种关键的灌溉管理策略。该策略通过在作物关键生长阶段减少灌溉水量,引导作物适应较少水分的条件,维持产量的同时提高水分利用效率。基于此,探讨了水分调亏对大田作物生长和产量方面的影响机制,综述了水分调亏对作物根系生长、叶片水分蒸腾、光合作用等关键因素的调控作用,并强调了不同作物在水分调亏响应上的差异。以实践案例验证了水分调亏在不同地区和作物上的显著成效,包括提高作物产量、水分利用效率和土壤生态环境的稳定性等。最后提出了未来研究应关注不同气候条件下的最佳实践和新兴农业技术的应用,以更科学合理地实现水分调亏的动态管理,推动农业水资源的可持续利用。
In the face of drought and water shortage caused by global climate change,water regulated deficit has become an effective strategy to improve the water use efficiency of farmland.Water regulated deficit is a key irrigation strategy,which guides crops to adapt to less water conditions by reducing irrigation water at key growth stages,maintaining yield while improving water use efficiency.This paper discussed the mechanism of water regulated deficit for growth and yield of field crops,reviewed the regulating effect of water regulated deficit on root growth,leaf water transpiration,photosynthesis and other key factors,and emphasized the differences in the response of different crops to water regulated deficit.The significant effects of water regulated deficit in different regions and crops were verified by practical cases,including increasing crop yield,water use efficiency and soil ecological environment stability.Finally,it was proposed that future research should focus on the best practices under different climatic conditions and the application of emerging agricultural technologies,so as to scientifically and reasonably realize the dynamic management of water regulated deficit,and promote the sustainable utilization of agricultural water resources.
作者
于婧
YU Jing(Dayu Irrigration Group Co.,Ltd.,Jiuquan Gansu 735000)
出处
《现代农业科技》
2024年第15期27-30,共4页
Modern Agricultural Science and Technology
关键词
水分调亏
大田作物
影响机理
应用
研究进展
water regulated deficit
field crop
influence mechanism
application
research progress
