Effects of Fertilization at the Budding Stage on the Growth and Fruit Quality Formation of'Bingtang'Sweet Orange
This study aims to explore the effects of early application of fruit-setting fertilizer at the budding stage on the growth,development,and fruit quality formation of'Bingtang'sweet orange,with the conventional fertilization of 10 days after flowering as the control(CK).The shoot length,shoot thickness,leaf morphology,leaf chlorophyll SPAD value,leaf color,fruit appearance quality,and fruit internal quality were determined and compared.The results showed that the group with fertilizer application at the budding stage had higher shoot length and shoot thickness than CK.The fertilizer application at the budding stage increased the leaf length,leaf width,and leaf chlorophyll SPAD value by 14.5%-27.2%,18.6%-331.7%,and 7.1%-15.2%,respectively,compared with CK,which indicated faster leaf maturity.Fertilizer application at the budding stage promoted cell division and enlargement of the fruit.From mid-May to early June,the early fertilization group showed the fruit diameter and fruit weight ranges of 13.91-21.67 mm and 1.83-5.95 g,respectively,both significantly higher than those in the CK group.Compared with the CK,the early fertilization group showed the fruit diameter,fruit weight,and titratable acid content increases of 7.2%,26.7%,and 0.39 percentage points,respectively,at the fruit enlargement stage and 5.8%,17.7%,and 0.39 percentage points,respectively,at the fruit color changing stage.At the mature stage,the fruit diameter and weight in the early fertilization group were 3.4%and 13.1%,respectively,higher than those in the CK group.Moreover,the mature fruits exhibited more vibrant color,with glossy orange-yellow peels.However,the internal fruit quality had no significant difference between groups.Therefore,early application of fruit-setting fertilizer at the budding stage was beneficial for accelerating shoot development and enhancing fruit enlargement.
'Bingtang'sweet orangebudding stagefruit-setting fertilizergrowth and developmentfruit quality
NETL
NSTL
万方数据
维普
