开原县莲花公社保安七队果园是以大山楂为主并具有一定数量苹果等树种的综合性果园。其中有大山楂3500株,伏里红山楂70株,苹果树1050株。该园树势普遍较弱。其原因除地薄土浅,群众称之为“红石磊子”外,另一个原因是该园果树受沙里院褐球蚧(Rnodococcus sariuoni Borcns)危害严重。为防治该虫,曾于1981年萌芽前的早春喷过5％重柴油乳剂,1982年早春喷过5 Kaiyuan County Lotus Commune security seven teams orchard is a large hawthorn and has a certain number of apple trees and other integrated orchards. Among them, there are 3,500 large hawthorn, 70 red hawthorn and 1050 apple trees. The garden is generally weak. The reason for this is that apart from being thin and shallow, the masses call it “Hong Lei Lei Zi”, and another reason is that the fruit tree of the garden is seriously endangered by Rnodococcus sariuoni Borcns. In order to control the insects, sprayed 5% heavy diesel oil emulsion in early spring before 1981 sprout and sprayed 5