Keywords: 
• Citrus ponki /
• three prunings plus one improvement /
• systemic cultural practice fruit preservation /
• economic effects /

Abstract: In view of such questions as small size , poor quality and low commodity rate in the production of Citrus ponki in Quxian County area , practices including seedling , branch and fruit pruning , soil improvement by adding organic fertilizers (three prunings plus one improvement) and fruit preservation , were popularized in large area . Though acceptance check and evaluation , the results were shown as follows :when the key practices of three prunings plus one improvement were put into practice , average fruit yield in the base exceeded 45 t per hectare , ratio of special-grade and first-grade fruit rose up to 78 percent from 30 percent before the practice , with an increase of 160 percent , and ratio of second-grade and third-grade fruit decreased apparently .As a result , yearly income per hectare increased by 2 600 to 188 00 RMB and input-output ratio was about 1 to 4 ～ 6 .When the technique of fruit preservation by using Magnate medicine was applied , the length for preservation could reach as long as 3 ～ 4 months and ratio of good fruit increased by 3.4 percent .Therefore , remarkable economic effects could be attained by popularizing the practices of three prunings plus one improvement and fruit preservation .