椪柑“三疏一改”和贮藏監始际跫捌湫Ч?

Effects of popularizing the practices of “three prunings plus one improvement” and fruit preservation in Citrus ponki

针对衢县椪柑生产中果形偏小、品质欠佳和商品率低等问题 ,经大面积推广疏株、疏大枝、疏果、增施有机肥改良土壤 (三疏一改 )和果品贮藏保鲜技术后表明 :实施以“三疏一改”为核心的低改技术 ,基地平均产量超过 45t·hm-2 ,特级和一级果率由实施前的 30 %提高到 78% ,增加 1 60 % ,二级和三级果明显减小 ;年增收 0 2 6万～ 1 88万元·hm-2 ,投产比达 1∶4～ 6。推广万利得贮藏保鲜技术 ,果品保鲜时间达 3～ 4个月 ,好果率提高 3 4% ,衢县柑有 95 %果品实施贮藏保鲜 ,减少了损耗。推广“三疏一改”和保鲜技术 ,经济效益十分显著。表 5参

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.