几种农药对梨木虱若虫和卵防治效果的比较研究
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Comparative Study on Effects of some Pesticides Against Nymph and Egg of Pear Psylla
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四川农业大学学报 . 2001, (03): 234 -236 .  DOI: 10.16036/j.issn.1000-2650.2001.03.012