摘要
在二代梨木虱若虫期，用１０％吡虫啉ＷＰ进行田间防治试验。药剂浓度分别为１００００、８０００、５０００和３０００倍液。药后１ｄ的校正防效分别为８９．４％、９２．４％、９４．０％和９３．６％，药后１４ｄ的校正防效分别为７７．５％、８６．８％、９２．２％和９６．３％，均明显高于目前常用农药的防效，且对植物安全，对害虫天敌及有益生物无不良影响。
The results of field trial indicated that 10% Imidacloprid WP had a good effect to control Psylla chinensis at nymphal stage of secondary generation.The control efficiency after one day of spray at 3000,5000,8000 and 10000 times was 93 6%,94 0%,92 4% and 89 4% respectively.The control efficiency of the above various concentrations after three days of spray was 95 1%,95 7%,91 5% and 86 5% respectively.The control efficiency of above various concentrations after seven days of spray was 98 0%,96 8%,94 9% and 92 6% respectively.The control efficiency of them after fourteen days of spray was 96 3%,92 2%,86 8% and 77 5% respectively. The control efficiency was better than the gerneral pesticides and it's safe for the plants and the natural enemies.
出处
《河北林果研究》
1998年第1期43-45,共3页
Hebei Journal of Forestry and Orchard Research
