生产中,由于管理措施不当或滞后,套纸袋苹果容易出现果锈多、果灰多、裂纹多、表光差等诸多问题。现就以上影响果品质量的几个问题加以分析。1.套袋前喷农药浓度过高,是产生果锈的一个主要原因。生产实践中我们发现,苹果谢花后至套袋前,50%多菌灵可湿性粉剂喷布倍数最好为800倍,如果喷布600倍,则极易产生果锈。另外,套袋前的幼果期,果皮嫩,皮孔尚未关闭,如果混配农药种类过多,农药浓度过大,则极易产生药害,导致 Production, due to improper management measures or lag, paper bag Apple is prone to fruit rust, fruit ash and more cracks, table light and many other problems. Now on the impact of several issues of fruit quality be analyzed. 1. Before spraying the pesticide concentration is too high, is a major cause of fruit rust. Production practice, we found that Apple Xie Hua before bagging, 50% carbendazim wettable powder injection times the best 800 times, if the spray 600 times, it is easy to produce fruit rust. In addition, the young fruit before bagging, peel tender, lenticels not closed, if the type of pesticide mixed too much pesticide concentration is too large, it is easy to produce phytotoxicity, resulting in