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研究了开花后单独使用氢氧化钙（30g/l）或氢氧化钙与氢氧化铜混合使用（含Cu50％的Kocide1.5g／l）对甜樱桃和苹果果实品质的影响。甜樱桃在开花后6周，苹果在开花后8周进行喷雾。单独使用氢氧化钙仅减少“金冠”苹果的果锈，而对其它所测定的品质指标无影响。铜、钙混合施用提高甜樱桃“Bing”和“Van”果实的抗裂性和硬度。这种喷雾混合物也能增强金冠苹果的果肉硬度。
The effect of mixed use of calcium hydroxide (30 g / l) or calcium hydroxide with copper hydroxide (Kocide 1.5 g / l with Cu50%) after flowering on fruit quality of sweet cherry and apple was studied. Six weeks after flowering, sweet cherry was sprayed 8 weeks after flowering. The use of calcium hydroxide alone reduced the fruit rust of “Golden Delicious” apples only and did not affect other measured quality indicators. Mixed application of copper and calcium improves the crack resistance and hardness of sweet cherry “Bing” and “Van” fruits. This spray mixture also enhances the fruit firmness of Golden Delicious apples.