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以梨木虱为试材,通过收集2012年和2014年山西太谷梨园温度及物候信息,研究了其与梨木虱发育历期的关系。结果表明:当梨园内6d平均温度达0℃时越冬成虫开始出蛰,至8.5℃时,越冬成虫达到出蛰盛期,从出蛰至高峰期历时25d;当6d平均温度达12℃时越冬成虫产卵达高峰,从开始产卵至盛期历时18d;当6d平均温度达15℃时第1代若虫发生高峰,从第1代若虫开始出现至盛期历时18d。试验表明,早春梨园梨木虱的防治最佳时期是成虫出蛰盛期和卵孵化盛期,此时正值玉露香梨花芽开绽期和80%~90%落花期。
In this paper, the temperature and phonological information of pear farm in Taigu, Shanxi Province in 2012 and 2014 were collected to study the relationship between Picea repens and the developmental period of Psilocybin. The results showed that the overwintering adults began to sting out when the average temperature reached 6 ℃ in 6 days, and the overwintering adults reached the peak when the temperature reached 8.5 ℃, reaching 25 days from the sting to the peak and overwintering when the average temperature reached 12 ℃ Adult spawning reached its peak from the beginning of spawning to its peak lasted 18d; when the average temperature of 6d reached 15 ℃, the first generation of nymphs peaked from the first generation of nymphs to peak duration of 18d. The results showed that the best stage of pear lice control in early spring was the stage of emergence and egg hatching of mature adults. At this time, the flower buds of Yulu pear were open and 80% ~ 90% of the flowering stage.