调环酸钙对轮台白杏营养生长和果实品质的影响

【目的】研究调环酸钙在轮台白杏生长发育调节中的作用,为有效控制轮台白杏营养生长、提高果实品质的化控技术提供数据参考。【方法】轮台白杏开花后10 d,选取大枝分别用调环酸钙100、125、150和175 mg/L水溶液处理,以喷清水处理作为对照。研究不同处理组在新梢停长后的枝叶特性、光合速率,果实成熟后的品质,分析调环酸钙处理后对轮台白杏生长发育和果实品质的影响以及喷施的最佳浓度。【结果】不同浓度调环酸钙的喷施处理与喷清水对照相比,坐果率平均提高了4.85%。新梢长平均缩短了1.80 cm,新梢节间长平均缩短了0.50 cm,新梢基部粗度平均增加了0.10 cm。叶片长平均缩短了0.52 cm,叶片宽平均增加了0.65 cm,叶面积平均增加了0.85 cm²。叶片叶绿素含量平均增加了4 SPAD,叶片净光合速率平均增加了0.83 μmolCO₂/(m²·s)。果实单果重平均增加了1.42 g FW,果实硬度平均增加了1.11 kg/ cm²,果实可滴定总酸含量平均增加了0.69 g/kg FW,果实可溶性糖含量差异不显著。4个处理浓度中,125 mg/L的调环酸钙喷施处理后效果最佳。【结论】轮台白杏落花后10 d叶面喷施125 mg/L调环酸钙能够有效抑制枝叶的旺长,提高叶片光合效率,增加果实单果重、硬度。

Effects of Prohexadione Calcium on the Growth and Fruit Quality of Luntaibaixing Apricot

【Objective】 The aim of this project is to study the regulation of prohexadione calcium on fruit tree development of 'Luntaibaixing' apricot and provide data references for the regulate technology development on vegetable growth and fruit quality of the apricot.【Method】 Ten days after flowering, the branches were treated with 100,125,150, 175 mg/L prohexadione calcium aqueous solution, respectively, and treated with pure water as control. The effects of calcium cyclate on the growth, development and fruit quality of 'Luntaibaixing' apricot and the optimum concentration of spraying were studied in different treatment groups.【Result】 Compared different concentrations of prohexadione calcium spray treatment with the control of water spray, the fruit setting rate increased by 4.85% on average, new shoot length shortened by 1.80 cm on average, new shoot internode length shortened by 0.50 cm on average. new shoot length base width increased cm.0.10 cm on average, average blade length shortened by 0.52 cm, average blade width increased by 0.65 cm, average leaf area increased 0.85 cm², chlorophyll content increased by 4 SPAD, average leaf net photosynthetic rate increased 0.83 μmolCO₂/(m²·s), fruit individual weight increased by 1.42 g FW, fruit hardness increased by 1.11 kg/cm², fruit titratable total acid content increased by 0.69 g/kg FW on average. There was no significant difference in soluble sugar content in fruit. In 4 treatment concentrations, the effect of 125 mg/L calcium tricyclic acid spraying was the best.【Conclusion】 Spraying 125 mg/L prohexadione calcium on leaves 10 days after blossoming can effectively inhibit the growth of branches and leaves, improve the photosynthetic efficiency of leaves, and increase the weight and hardness of single fruit.