论文部分内容阅读
桃小食心虫是梨、苹果、桃、杏、枣、山楂等的重要害虫。近几年随着果树面积的扩大,桃小的危害亦日趋严重,果实被害率一般20—30%,有的达70—80%。被害果呈畸形,果内充满虫粪,不堪食用,严重降低了果品的质量和产量。在晋南桃小每年发生1—2代,以幼虫做圆茧在土中越冬。5月中旬越冬幼虫开始出土,6月上旬出土最多。幼虫出土后在土块下结纺锤形茧化蛹。成虫最早6月中旬出现,一般羽化后2—3天产卵,多产在果实萼洼处,卵经8—10天孵化出幼虫,第一代
Peach Mung Beetle is an important pest of pears, apples, peaches, apricots, dates, hawthorn and so on. In recent years, with the expansion of the area of fruit trees, the harm of peach trees has also become increasingly serious. The rate of fruit damage is generally 20-30% and some of them reach 70-80%. Victims were abnormal deformity, the fruit is full of insect excrement, unbearable consumption, seriously reducing the quality and yield of fruit. In Shanxi Jinnan peach 1-2 generations a year, with larvae to do round cocoon in the soil overwintering. In mid-May overwintering larvae began unearthed in early June unearthed most. After the larvae unearthed in the soil knot spindle cocoon pupation. The earliest adults in mid-June appears, generally 2-3 days after eclosion spawning, prolific in the calyx of the fruit, the eggs by 8-10 days hatching larvae, the first generation