摘要
经过对枣树害虫长时间的研究 ,在各方面都取得了重要的进展 ,但仍存在以下亟需研究的问题。枣树害虫的研究还只是停留在对害虫种类和害虫的生态研究上 ,对于枣树害虫的虫害损失估计、经济受害水平和经济阈值的研究尚属空白 ;枣树害虫的种类仍然不完全清楚 ;在防治研究上 ,很少涉及通过生物途径进行害虫防治 ;在虫情预测预报的研究上缺乏多因子的数学模型 ;由于害虫没有主次之分 ,对于害虫的研究也显得不够集中。未来在枣树害虫的研究上应针对以上问题开展工作。
The pests of Zizyphus jujuba have been studied for a long time,and have gained many progress. However, there are five problems have to be studied. The studies of pests still rest on species and ecology. The loss value of pestis and economic injury level and economic threshold haven't been studied. The species of pest are not clear.On the prevention and control biological control rarely was studied.On the forecast of pest, there is no multi-factor pattern. The study is not concentrated because the pest has no difference of primary and secongdary. Then the future study stould be do on the above five problems.
出处
《河南农业科学》
CSCD
北大核心
2003年第9期45-47,共3页
Journal of Henan Agricultural Sciences
基金
陕西省教育厅专项科研基金资助项目 (98JK0 75 )
