This study was conducted over two successive seasons in 2018/2019 and 2019/2020 on 6-year-old Anna apple trees to determine the effects of autumn irrigation determent on fruit phenological development stages, flowering density, initial fruit set, fruit yield, fruit characteristics, and nutritional status. There were five irrigation treatments: T₁, control (no determent); T₂, irrigation determent for 30 d from October 1st to October 30th; T₃, irrigation determent for 45 d from October 1st to November 14th; T₄, irrigation determent for 30 d from October 10th to November 9th; and T₅, irrigation determent for 45 d from October 10th to November 24th. The results revealed that in both seasons, the dates for earliest and latest bud burst, petal fall, and fruit set were in T₁ and T₅. Moreover, in both seasons, T₃ significantly improved the number of opened flowers for 100 spur bud inflorescences, percentage of fruiting spurs, initial fruit set, fruit yield, yield increment, fruit firmness, total soluble solids (TSS), total and reducing sugars, and anthocyanin content. Meanwhile, the percentage of vegetative spurs, fruit weight, volume, length, diameter, leaf chlorophyll content, and leaf mineral content (N, P, K, Ca, and Mg) were higher in the control treatment in both seasons. Thus, irrigation determent during autumn for 45 d from October 1st to November 14th (T3) was the most conclusion efficient treatment for Anna apple productivity and the non-critical periods for apple agricultural practices.

这项研究在2018/2019和2019/2020年连续​​两个季节对6岁的安娜苹果树进行了研究，以确定秋季灌溉抑制对果实物候发育阶段，开花密度，初始坐果，果实产量，果实的影响特征和营养状况。共有五种灌溉处理方式：T ₁，对照（无干扰）；T ₂，从10月1日至10月30日，灌溉抑制30 d；T ₃，从10月1日至11月14日灌溉irrigation水达45 d；T ₄，从10月10日至11月9日灌溉抑制30 d；和T ₅10月10日至11月24日，灌溉威慑持续了45天。结果表明，在两个季节中，最早和最晚的芽破裂，花瓣落落和坐果的日期都在T ₁和T _5中。此外，在两个季节中，T ₃显着改善了100个直齿花序的开花数量，子果百分比，初始坐果，果实产量，增产，果实硬度，总可溶性固形物（TSS），总糖和还原糖以及花色苷含量。同时，在两个季节的对照处理中，植物性刺毛的百分比，果实重量，体积，长度，直径，叶片叶绿素含量和叶片矿物质含量（N，P，K，Ca和Mg）均较高。因此，从10月1日至11月14日（T3）秋季，在45 d内的灌溉威慑是对安娜苹果生产力和非关键时期苹果农业实践最有效的结论。