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对山地苹果采后保叶及其对次年产量的影响进行了研究。结果表明，秋季采果后通过保叶措施，可使保叶率高达８５ ％ 以上。光合作用延长至１１ 月中旬，有利于树体的营养积累。而且对果树次年光合效率的提高及苹果的丰产、稳产有显著效果。
The effect of applying post-harvest leaves on mountain apples and its effect on the following year’s yield was studied. The results showed that after the autumn harvesting leaves by Paul measures, can make Paul leaves rate as high as 85%. Photosynthesis extended to mid-November, is conducive to the accumulation of tree nutrition. But also on the photosynthesis efficiency of fruit trees in the following year and apple’s high yield, stable yield has a significant effect.