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以不同类型的油类配合制成几种杀卵乳油剂,对苹果全爪螨越冬卵进行了室内和田间杀卵试验。7%含油量液校正杀卵率分别是:平平加聚异丁烯乳剂,室内校正杀卵率为89.3%,田间为92.0%;润湿剂柴油乳剂,室内为88.5%,田间为91.9%;平平加柴油乳剂,室内和田间均为90.3%;润湿剂低分子聚异丁烯乳剂,室内为91.7%,田间为91.2%。同时由于发芽前喷洒了油乳剂,压低了越冬卵基数,6月底苹果全爪螨单叶含螨量仅有4头次,与化学防治树相比,可减少两次杀螨剂的应用。
With different types of oil made of several kinds of oviposit cleavers, overwintering eggs of apple mite mites indoor and field ovulation test. Correction of egg-killing rate of 7% oil-containing liquid were: flat and polyisobutylene emulsion, the indoor corrected killing rate was 89.3%, the field was 92.0%; wetting agent diesel emulsion, indoor 88.5%, field 91.9% Diesel oil emulsion was 90.3% indoors and in the field. The wetting agent was low molecular polyisobutylene emulsion, 91.7% indoors and 91.2% in the field. At the same time, the oil emulsion was sprayed before germination, lowering the base of overwintering egg. At the end of June, the single-leaf mite content of apple mites was only 4 times, which could reduce the application of two acaricides compared with the chemical control tree.