生草栽培对橘园土壤肥力和红肉脐橙果实品质的影响

Effects of white clover culture on orchard soil fertility and fruit quality of Cara Cara naval orange

选取南北向种植的红肉脐橙结果树,设置白三叶草生草处理组和清耕种植对照组,生草栽培5a后(2015年),测定果园土壤速效矿质元素的变化,同时分析生草栽培4~5a后(2014-2015年)脐橙果实品质的变化。结果表明:与对照组相比,生草栽培5a后橘园土壤速效P和有效Fe的含量显著提高;生草栽培显著增加了单果质量、果形指数和可食率,其中,单果质量第4年增加15.71%,第5年增加28.98%;果皮厚度下降0.28mm(2014年)和0.18mm(2015年);果形指数提升了0.04;可食率提升2.3%(2014年)和2.1%(2015年);生草栽培对红肉脐橙可溶性固形物、可滴定酸和维生素C含量等内在品质无显著影响。白三叶草生草栽培能增强红肉脐橙果园土壤肥力,提高脐橙单果质量,改善果实品质,具有较好的生态和经济效益,适宜推广利用。

To study the effects of white clover culture on soil fertility and fruit quality of Cara Cara naval orange(Citrus sinensis Osbeck),soil available mineral elements content of orchard were measured5 years after sod culture(in 2015).The fruit qualities of Cara Cara naval orange were measured 4-5years after sod culture(in 2014 and 2015).The results showed that available P(phosphorus)and Fe(iron)content were significantly up regulated in white clover culture treated soil compared with the control.The white clover culture significantly increased fruit weight,fruit shape index and edible rate compared with the control.Fruit weight in 2014 and 2015 was increased by 15.71% and 28.98%.Fruit peel thickness thinning in 2014 and 2015was increased by 0.28 mm and 0.18 mm.Fruit shape index was increased by0.04.Fruit edible rate in 2014 and 2015was increased by 2.3% and 2.1%.The total soluble content,total acid and vitamin C of fruit were not significantly affected under the white clover culture.The white clover culture increased soil fertility of orchard and improved fruit quality of Cara Cara naval orange.The white clover culture has the potential to be popularized on Cara Cara naval orange orchard.