核桃举肢蛾的生物学习性与温湿度的关系

Biology Habit of Atrijuglans hitauhei Yang and the Relationship with Temperature and Humidity

2009—2010年,在山西省左权县核桃产区进行野外调查,利用美国DeltaTRAK温湿度记录仪记录温湿度变化对核桃举肢蛾的影响,以掌握核桃举肢蛾的发生规律及其发生高峰期与环境温湿度的关系。调查分析表明,温度变化对核桃举肢蛾的发生影响不大,而湿度对核桃举肢蛾的发生影响十分明显。依记录仪结果分析,到6月中旬当空气湿度达到60%以上时,核桃举肢蛾成虫即会出现,且发生时期相对集中,每年成虫发生期出现的时间早晚随空气湿度的变化提早或推迟;同时也确定了发蛾高峰期在7月6日左右。在左权大部分地区,树冠第1次喷药的防治适期应掌握在7月12日前后。

In 2010---2010 field investigation was conducted in walnut zone in Zuoquan Shanxi, where American DehaTRAK was utilized to record the effect of temperature and humidity change to Atrijuglans hitauhei Yang for understanding of infection regularity and the relationship between infection peak stage and the temperature and humidity. Results of the survey analysis showed that, temperature changes had little impact on walnut Atrijuglans hitauhei Yang, but humidity remarkable impact on its infection. Based on the record analysis by the recorder, when the air humidity was above 60% at the middle of June, adult walnut moth appeared and infection occurred relatively concentrated, and the infection time would be earlier or later depends on humidity change. It was identified that the infection peak always appeared around 6th July. We also believed that in most parts of Zuoquan, first crown spraying of optimum control should be practiced about July 12.