避雨栽培对金柑留树保鲜果实品质的影响

以阳朔金柑为试材,从2010年12月20日至2011年4月15日进行了盖膜避雨栽培处理,以露地栽培为对照,分析阳朔金柑留树保鲜期间果实品质动态变化,以探讨避雨栽培对金柑留树保鲜过程中果实品质的影响。结果表明:采用避雨栽培留树保鲜技术,可以延长果实采收期至翌年4月中旬,留在树上的好果率仍有98.9%,避雨栽培不但能缓解留树保鲜金柑果实硬度的降低,保持后期较高的VC含量,而且能有效增加果实可溶性固形物含量、固酸比和糖酸比。在整个留树保鲜过程中,盖膜处理的果实硬度比露地栽培的高10.08%～14.26%,可溶性固形物比对照高2.12%～5.86%,可滴定酸比对照低13.64%～14.29%;盖膜处理的金柑果实可溶性糖、固酸比和糖酸比均高于对照。留树保鲜的金柑果实VC含量呈现先升后降的趋势,留树保鲜第2个月达到最大值,第2个月后金柑果实VC含量迅速下降,但盖膜处理的金柑果实VC含量比对照高8.69%～14.73%。

Effects of Rain Shelter Cultivation on Quality of Fortunella crassifolia Fruits During the Tree Storage

The dynamic changes of the Yangshuo kumquat fruits qualities were compared under rain shelter cultivation covered with plastic film and in open field cultivation as control from December 20,2010 to April 15,2011.In order to understand the effects of rain shelter cultivation on quality of Yangshuo kumquat(Fortunella crassifolia Swingle cv.Yangshuo) fruits on tree storage in Yangshuo county.The results showed that the storage period on tree of Yangshuo kumquat under rain shelter cultivation could extend to mid-April of the next year and the good fruit rate still could reach 98.9%.The rain shelter cultivation could not noly delay the decrease of the fruit firmness and maintain higher VC content of later period,but also increased its soluble solids content,TSS-TA ratio and TS-TA ratio.During the whole storage period on the tree,the fruit firmness under rain shelter cultivation was 10.08% to 14.26% higher than that in open field cultivation,its soluble solids content was 2.12% to 5.86% higher than the control;titratable acid content was 13.64% to 14.29% lower than the control;soluble sugar content,TSS-TA ratio and TS-TA ratio of fruit under rain shelter cultivation were all higher than that of control.The VC content of kumquat fruits on the tree storage increased during the first two months and reached maximum in the second month,then reduced rapidly,but the VC content of kumquat fruits under rain shelter cultivation was 8.69% to 14.73% higher than that of control.