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黄粉虫黄粉虫是主要入袋害虫之一,危害套袋梨果,连续套袋果园危害严重。喜阴暗,袋口所得不严、果袋无防虫效果易从袋口、通气放水口钻入袋内危害。6月上中旬向果实转移,8月中旬果实近成熟时危害最重,常致果实带袋脱落。防治关键是降低果园虫口基数,7月中旬、8月中下旬是黄粉虫防治的关键时期,效果较好的药剂有40%乐果乳剂、80%敌敌畏乳剂、2.5%溴氰菊酯和20%杀灭菊酯乳剂等。危害严重套袋梨园,应摘袋喷药防治或待虫口基数降低后再套袋。
Tenebrio Tenebrio is one of the main bagged pests, bagging pear fruit hazards, continuous bagging orchard serious harm. Hi dark, sack income inequality, fruit bag no pest control effect easily from the bag mouth, breathable water hole into the bag endangering. In mid-June to the transfer of fruit, mid-August fruit near the most damaging fruit, often caused by fruit bags off. Key to prevention and control is to reduce orchard population base, mid-July, late August is a key period of Tenebrio prevention and treatment of better agents are 40% dimethoate emulsion, 80% dichlorvos emulsion, 2.5% deltamethrin and 20% Fenvalerate emulsion and so on. Harmful bagging pear orchard should be taken away from the bag spray or insect population to be reduced after the base number bagging.