一、过度成熟鸭梨采收如果过晚,它的生理机能就会衰退,在贮藏时就极易发生褐变而出现黑心。所以在贮前要时刻观察鸭梨的成熟情况,做到及时采收。二、采后入库不及时或库温过高鸭梨采后如果在高温下堆放时间过长或者是入库后温度过高,都会导致鸭梨呼吸过旺,大量的营养物质被消耗,水分过量散失,引起果实衰老,导致果实黑心病的发生。所以在鸭梨采后应及时入库,或放在适当的地方进行预冷处理。入库后要逐渐地降温,每3天降1℃,直到降到0±0.5℃,然后在此温度下贮藏。三、冷害黑心鸭梨贮藏时,如果温度低于—1℃时极易 First, over-ripening pear harvest if too late, its physiological function will decline, browning easily occur during storage and black heart. Therefore, we should always observe the maturity of pear before storage, timely harvest. Second, the post-harvest storage is not timely or the library temperature is too high If the pear after storage for too long at high temperatures or storage temperature is too high, will lead to pear over-breathing, a lot of nutrients are consumed, water Excessive loss, causing fruit aging, resulting in the occurrence of fruit black heart disease. Therefore, after the pear harvest should be promptly stored, or on the appropriate place for pre-cooling treatment. After storage to gradually cool, every 3 days down 1 ℃, until dropped to 0 ± 0.5 ℃, and then stored at this temperature. Third, chilling black pear store, if the temperature is below -1 ℃ easily