鄱阳湖流域主要旱作物需水规律研究

Study on water requirement law of main dry crops in Poyang Lake Basin

应用大田试验和小型旱作物需水测坑相结合的方法,采用喷/滴灌、沟灌、不灌三种不同灌溉方式,针对鄱阳湖流域主要旱作物需水量变化规律进行研究,找出其缺水敏感期,为灌好关键水提供理论依据,同时分析其作物需水系数,提出不同灌溉方式下作物水分利用率.

Combined with the method of dry crops test pit and field and by the three different irrigation modes,which is the sprinkler irrigation,furrow irrigation and no irrigation, the water requirement law of main dry crops in Poyang Lake basin is researched in order to find the sensitive period of water shortage and provide the theoretical basis for the critical water. At the same time, the crops water requirements coefficient was analyzed and the crops water utilization efficiency under the different irrigation modes was proposed.