沙地马铃薯不同灌溉方式的经济效益分析

从投资回收期和益本比2个方面,对靖边县沙地马铃薯半固定式喷灌、滴灌、大型喷灌机喷灌3种灌溉方式进行经济效益分析,在经济分析的基础上,采用层次分析法,对3种灌溉方式进行综合效益评价。结果表明,半固定式喷灌、滴灌、大型喷灌机喷灌的投资回收期分别为2.1 a,0.6 a,0.9 a,效益费用比分别为2.6,7.9,7.6,滴灌的经济效益十分明显;3种灌溉方式的优劣排序为:滴灌最好,半固定式喷灌次之,大型喷灌机喷灌较差。

The economic benefits of three irrigation techqiues for potatoes planted in sandy soil in Jingbian County,sprinkling irrigation,drip irrigation and use of a large-scale sprinkling machine irrigation,were analyzed based on the repayment period of investment and the benefit-cost ratio.The results show that the repayment period of sprinkling irrigation,drip irrigation,and a large-scale sprinkling machine irrigation is 2.1 a,0.6 a,and 0.9 a,respectively,and the benefit-cost ratio is 2.6,7.9,and 7.6,respectively...