本论文的主要研究目标是探索沟灌和滴灌模式下棉花分根区交替灌溉的节水机理以及其在民勤荒漠绿洲区的应用模式。

The main research objective of this paper is to explore the water-saving mechanism and application pattern of alternate furrow irrigation and alternative drip irrigation mulched with plastic film.

youdao

交替隔沟灌溉不降低光合速率而蒸腾速率有所下降，并有利于提高蒸腾效率；

AFI can not decrease photosynthesis rate but it can decrease evaportranspiration rate and is helpful to increase evaportranspiration efficiency.

youdao

交替隔沟灌溉不降低光合速率而蒸腾速率有所下降，并有利于提高蒸腾效率；

AFI can not decrease photosynthesis rate but it can decrease evaportranspiration rate and is helpful to increase evaportranspiration efficiency.

youdao