关键词: 柑桔类果树[49EL]蚜虫, 杀虫剂[49LD], 虫害[49LA], 残效期[49LD]

Abstract: Field test of effectiveness of new several insecticides for control aphids in Citrus indicated that 20% Carosulfan Ec 3000×, 40.7% Chlorpyrifos EC 2000×, 90% Methomyl powder 5000× and 3% NI-25 EC 3000× were much better than Dimethoate EC 1000×, especially 3% NI-25 EC 3000× which was made lately in Japen, had excerllent effectiveness and persistence. The effectiveness of NI-25 EC 3000× was still 100% 14 days after applying. The insecticides mentioned above could be used to control aphids of citrus instead of Dimethoate EC. However, the result of test show ed that effect of 50% Pirimicarb EC 1500× for control aphids of citrus was lower than Dimethoate EC.

Key words: ORANGETREES, APHID, IN SECTICIDES, PEST DAMAGE, LONGEVITY OF RESIDUES