(一)不宜栽植松树。松树易招引大量松孢子,使果树受害。尤其是对梨树危害更重,常发生梨叶黄斑病,结果率下降,畸形果增多。 (二)不宜栽植柏树。在梨树上常发生梨锈病。锈病危害梨树后,常转移到柏树上越冬,第二年继续危害梨树。故梨树周围忌栽柏树。 (三)示宜栽植泡桐。果树根部常易发生紫纹羽病,而泡桐恰是紫纹羽的主要寄主,故果园周围不宜栽植泡桐。 (A) not suitable for planting pine trees. Pine easy to attract a large number of pine spores, the fruit trees victims. In particular, the pear tree harms even more, leaf maculopathy often occurs, resulting in decreased rates of deformities increased. (B) should not be planted cypress trees. Pear rust pears often occur. Rust disease pear damage, often transferred to the winter over the cypress, the second year continue to harm pear. Therefore, avoid harvested Cypress tree around the pear tree. (C) Show to grow Paulownia. Fruit tree roots are often prone to purple pattern feather disease, and Paulownia is the main host of purple line feather, so the orchard should not be planted Paulownia.