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采用试验与示范相结合,对汇集雨水补灌农技措施进行了系统研究。结果表明:在干旱少雨,蒸发量大,气候冷凉的定西地区,实行地膜和秸秆覆盖加滴灌的农技措施,能有效减少土壤水分蒸发,增加作物生长需要的有效积温;实行垄沟种植,发展间套,进行雨水有限补灌,能充分发挥雨水资源的生态经济效益。
The experiment and demonstration were combined to systematically study the technical measures for rainwater supplement irrigation. The results showed that the agricultural measures of mulching and straw mulching and drip irrigation in dry and rainless areas with large evaporation and cold climate could effectively reduce the evaporation of soil moisture and increase the effective accumulated temperature required for crop growth. The implementation of furrow planting and development Between sets of limited rainwater recharge, give full play to the ecological and economic benefits of rainwater resources.