3种性诱剂诱捕器对桃园梨小食心虫诱捕试验

为了明确性诱剂的田间诱捕效果和梨小食心虫在陕西桃园的发生情况,对桃园梨小食心虫进行性诱剂大田诱捕试验。结果表明,性诱剂对梨小食心虫成虫的诱捕效果显著,且3种类型诱捕器中,船型诱捕器效果最佳。对3种诱捕器诱捕结果综合统计可知,梨小食心虫在陕西杨凌年发生4代,第1代的成虫高峰期在5月22日至5月27日,历期6d;第2代的高峰期在6月26日至7月6日,历期10d;第3和第4代的高峰期在7月31日至8月20日,历期21d。因此,建议在发生高峰期进行药剂防控。

The Survey of Sex Pheromone Trapping Effects and the Occurence for Grapholitha molesta (Busck)

To identify the trapping effects of sex pheromone and the occurrence of Grapholitha molesta (Busck) in Shaanxi peach orchard, filed experiments of sex pheromone control were carried out experiment station.The results showed that Grapholitha molesta (Busck) harmed the new leaves of peach tree, sex pheromone trapping effect was significant for adults and the best effect was obtained in ship form trap. So this trap can be promoted to the fruit farmers in large scale. Meanwhile we know Grapholitha molesta (Busck) happens four generations in Yangling Shaanxi, the first generation of adult peak is in May 22 May 27, the duration is 6 days; the second generation of adult peak is in June 26 July 6, the duration is 10 days; the third and the fourth generation of adult peak are in July 22 August 27, the duration is 21 days. This suggested that chemical control of Grapholitha molesta (Busck) should be taken in the peak time.