介壳虫是柑桔树上繁殖快而又较难防治的虫害之一。在化学防治不理想的情况下 ,用土办法防治 ,往往能收到良好的效果。冬季清园时 ,用洗衣粉和柴油各 10 7ｇ ,对水 16ｋｇ喷雾 ,每周一次 ,连喷 2～ 3次 ,防效可达 95 2 %～10 0 %。同时 ,对黑刺粉虱也能收到良好的效果。清园后 , Scale insects are one of the insect pests that reproduce fast and difficult in citrus trees. In the case of chemical control is not ideal, with the soil control methods, often can receive good results. During the winter clearing, 10 7 g of detergent and diesel oil are sprayed on the 16 kg of water once a week for 2 to 3 times with a control efficiency of 95 2% to 100%. At the same time, the blackthorn whitefly can also receive good results. After the Qing Park