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李实蜂(Hoplocampa sp.)在南京全年发生1代,以成熟幼虫于4月底至5月初自被害果爬出,在士內结(?)休眠。翌年3月中旬化蛹,成虫于3月下旬和4月上旬间化出。此时适为李树开花时期,雌蜂即产卵于花萼及花托表皮下。幼虫孵化后爬过花萼,再蛀入幼果。被害果于4月底5月初脫落,此时幼虫亦达成熟阶段,即入土结(?)休眠。 在饲养中,发现寄生蜂一种,为小(?)蜂科之Bracon nigrorufum Cush,寄生于李实蜂幼虫体內,但寄生率不高。 666(6%可湿性粉)1∶200倍悬浊液,对李实蜂具有高度防治效力。在李树开花期施用,并无藥害,李果亦无666气味。在南京,每年于3月底及4月初进行2次喷药,李树的结果数量可显著增加。連续噴药2—3年,即可使李实蜂发生数量,激剧降低。
Hoplocampa sp. Occurs in Nanjing for one generation throughout the year. Mature larvae climb out of the victimized fruit from the end of April to the beginning of May. Mid-March the following year pupation, adult in late March and early April between out. At this time suitable for the flowering period of Li Shu, female bees that spawn in the calyx and receptacle epidermis. After the larvae hatch across the calyx, and then bore into young fruit. The victim fell off at the end of April and early May, at which time the larvae reached the mature stage, that is, the soil knot (?) Dormant. In feeding, a parasitic wasp was found, Bracon nigrorufum Cush, which is a small (?) Bee, parasitized in the body of the larvae, but with low parasitism. 666 (6% wettable powder) 1: 200 times the suspension, the Li wasps have a high degree of prevention and control. In plum flowering period, there is no phytotoxicity, Li Guo no 666 odor. In Nanjing, spraying twice a year in late March and early April resulted in a significant increase in the number of results for Li Shu. Continuous spraying 2-3 years, you can make the number of Li Shi bee, shock decreased.