盛花期喷施肥料对轮台白杏坐果率的影响

Effect of Spray Fertilizer at the Full-bloom Stage on the Fruit Setting Rate of Armeniaca Vulgaris 'Luntaibaixing'

【目的】检验盛花期喷施硼酸、尿素、白糖复合肥料对盛果期轮台白杏坐果率的影响,为轮台白杏根外肥料的科学有效施用提供解决方案。【方法】采取"3414"肥料效应田间试验和逐步回归分析。【结果】轮台白杏坐果率的常用对数与硼酸、尿素的喷施浓度及二者的交互作用存在显著的线性相关关系,且与硼酸、尿素的喷施浓度成显著正相关,与二者的交互作用成显著负相关。白糖喷施浓度与轮台白杏坐果率常用对数的相关性不显著。轮台白杏盛花期硼酸的最适喷施浓度为4.826 1 g/L,尿素的最适喷施浓度为5.565 2 g/L,理论坐果率期望值可达到8.03%。【结论】盛花期喷施硼酸和尿素的复合肥料,可显著提高盛果期轮台白杏坐果率。

[ Objective ] In order to provide compound fertilizer formula which was used outside of the roots of Armeniaca vulgaris ＇ Luntaibaixing＇ , the effect of spray fertilizer, which was compounded by boric acid, urea and white sugar, at the full - bloom stage on the fi＇uit setting rate of A. vulgaris ＇ Luntaibaixing＇ was tested. [ Method] ＂3414＂ fertilizer effect field experiment and stepwise regression analysis was used. [ Result l The common logarithm of the fruit setting rate of A. vulgaris ＇ Luntaibaixing＇ has significant linear correlation to the effect of spray concentration of boric acid, urea and the interaction effect of them, and was significantly positively correlated to the effect of spray concentration of boric acid and urea, and to the interaction effect of them, but not to the effect of white sugar. The suitable spraying concentration of boric acid was 4. 826 1 g/L and urea was 5. 565 2 g/L. The expected value of the theory fruit setting rate can reach 8. 03%. [ Conclusion] It is found that spraying compound fertilizer of boric acid and urea at the full -bloom stage of A. vulgaris ＇ Luntaibaixing＇ can increase the fruit setting rate significantly at the prosperous fruit stage.