烤烟膜下滴灌的节水效益分析  

Analysis on the water-saving benefit of flue-cured tobacco under the condition of mulch drip irrigation

作　　者：陈晓东[1] 许淼[2] 侯毛毛[2] 

机构地区：[1]浙江水利水电专科学校水利工程系,浙江杭州310000 [2]河海大学水利水电学院,江苏南京210098

出　　处：《广东农业科学》2013年第2期13-15,共3页Guangdong Agricultural Sciences

摘　　要：设计不同的膜下滴灌处理，采用自制PVC棵间蒸发测定装置测定不覆膜时的烤烟棵间蒸发量，并对膜下滴灌的节水效益进行分析。结果表明：伸根期、旺长期、成熟期烤烟棵间蒸发量占该生育期灌溉量的比例分别为15．13％～18．66％、12．90％～35．90％、12．98％-15．83％，这部分无效耗水可通过覆膜节省；计算所得经济内部收益率为13．8％（〉12％），每667m^2经济净现值为911．8元，费用效益比为1．31（〉1．0），经济上合理可行。Different treatments of mulch drip irrigation were designed, and the soil evaporation was measured using a self-made PVC device, and the water-saving benefit of mulch drip irrigation was also analyzed. Results showed that the ratio of Evaporation/Irrigation during the root-spreading period, vigorous period, maturity period was 15.13%-18.66%, 12.90%-35.90%, 12.98%-lS.83%,respeetively. This part of invalid water consumption could be saved by the mulch application; the calculated EIRR was 13.8%（〉12%）, the calculated ENPV was 911.8 yuan per 667 m^2, and the calculated EBCR was 1.31（〉1.0）, from the economical angle, the project was reasonable and practicable.

关 键 词：烤烟 膜下滴灌 节水 效益 处理 

分 类 号：S572[农业科学—烟草工业]