今年自然灾害多,1月份以来,先是低温干旱,苹果整体开花提前(陕西提前7~10天),树体营养积累不足,特别是4月6—11日的晚霜冻害后,生产小年已成定局。今年苹果园中后期管理可采取以下三项措施:1)加强综合管理。一旦树体衰弱,得两年多才能恢复,第3年才能丰产优质结果。因此,花期受冻的 This year natural disasters and more, since January, the first cold and drought, the apple flowering ahead of schedule (Shaanxi 7 to 10 days in advance), insufficient accumulation of tree nutrients, especially the April 6-11 night frost damage, the production of small has become foregone conclusion. Apple orchard in the latter part of management can take the following three measures this year: 1) to strengthen integrated management. Once the tree is weak, it will take more than two years to recover and the first three years will yield high quality results. Therefore, the flowering is frozen