莱阳茌梨是我国白梨系统中一优良栽培品种,它以质细肉嫩、多汁、香甜可口驰名中外,但因贮藏性差,出口创汇受到影响。影响莱阳茌梨长期贮藏的主要原因是果肉褐变,品质下降。因此探讨莱阳茌梨褐变的原因及褐变的控制对莱阳梨出口创汇具有重要意义。1 材料和方法 供试材料选自莱阳农学院果树试验站果园内,果园土壤质地为细沙土,树龄20年。果 Laiyang pear is pear pear system in our country an excellent variety, it is fine meat tender, juicy, sweet and famous at home and abroad, but due to poor storage, export earnings affected. Long-term storage of Laiyang Pear long-term storage of the main reasons is the flesh browning, quality declines. Therefore, it is of great significance to explore the reason of browning of Laiyang pear and the control of browning on foreign exchange earning of Laiyang pear. 1 Materials and methods The materials tested were selected from the Fruit Orchard Experimental Station of Laiyang Agricultural College. The orchard soil texture is fine sandy soil with a 20-year age. fruit