花椒红胫潜跳甲的发生规律与防治措施

Occurrence regularity and control measures of Podagricomela flavitibialis

花椒红胫潜跳甲是在甘肃陇南花椒树上首先发现的重要虫害。其成虫主要取食于花椒树的叶芽、花芽、花序,幼虫孵化后即蛀入花椒果实中蛀食花椒幼果内的种子,导致花椒树大量落果。该虫1年发生1代,以成虫在花椒树冠下周围土壤的表土层7cm内越冬。越冬成虫在花椒树开花前开始出土活动,4月下旬为其产卵盛期,5月上旬至5月中旬为其孵化盛期,这一时期是药剂防治的最关键时期。采用花椒树冠下覆膜方法防治花椒红胫潜跳甲,不但防治效果显著,而且能抗旱保水,对环境又无污染,符合无公害农产品生产的技术要求。

Podagricomela flavitibialis was an important pest firstly discovered in Zanthoxylum bungeanumin Longnan of Gansu.The adults mainly ate bud,flower bud and inflorescence.After the larva hatched,and it ate seed in young fruit which will result in a large number of fruits dropping off.It had one generation in a year,and adult lived through the winter in 7cm deep surface soil surrounding crown in Z.bungeanum.Overwintering adults crawled out from soil before flowering.Late April was the egg laying period.The peak egg hatching period was from early May to mid-May,and it was the most critical period for chemical control.Covering soil under crown with plastic film was of great effectiveness in controlling P.flavitibialis and that also could keep soil moisture.The method had no environmental pollution,and it met the technical requirements of producing pollution-free agricultural products.