苹果套袋技术苹果套袋可提高果实外观质量，但也存在易感污染病、果锈等问题。提高套袋效果的途径：（１）套袋时期：对于黄绿色品种，为防止产生果锈或使果点变浅，可在果锈发生前，即落花后１０天以内套袋。对于不易产生果锈的黄绿色和红色品种，可在生理落果后套袋。（... Apple bagging technology Apple bagging can improve the appearance of fruit quality, but there are also susceptible pollution problems, fruit rust and other issues. Ways to improve the bagging effect: (1) bagging period: yellow-green varieties, in order to prevent the production of fruit rust or make the fruit lighter, before rust occurs, that is, within 10 days after the bagging bagging. Not easy to produce fruit rust yellow-green and red varieties, bagging after physiological drop fruit. (...