果实套代是80年代兴起的一项果树栽培新技术。果实从幼果期就会上特制的纸袋，直至采收果实长年保护在袋内生长，为生产高档商品果提供了保证。其好处如下：1．可避免多种为害果实的病虫害。如梨轮纹病、炭疽病、锈病、黑星病等烂果病，及食心虫、卷叶虫类、螨类、蚜类、梨木虱 Fruit sets is a new fruit cultivation technology emerging in the 1980s. Fruit from the young fruit period will be on the special paper bag, until the fruit harvest for many years to protect the growth in the bag, for the production of high-end commodity fruit provides a guarantee. The benefits are as follows: 1. Avoid a variety of fruit pests and diseases. Such as pear ring disease, anthracnose, rust, scab and other rotten fruit disease, and food worms, leaf worms, mites, aphids, pear psylla