几种生物药剂防治梨木虱的田间药效试验

从生态健康理念出发,以沙依东生态健康果园为研究对象,利用0.5%藜芦碱水剂可溶性液剂、0.3%苦参碱水剂和0.6%乙基多杀菌素对香梨树上的梨木虱进行了药效和药害的试验。结果表明,喷施0.5%藜芦碱原药、0.3%苦参碱原药、0.5%藜芦碱和0.3%苦参碱混合原药对香梨树叶片和枝条产生明显的药害反应。在加入助剂时,0.5%藜芦碱稀释500倍加稀释1 000倍的洗洁精处理防治效果最好,达到了82.9%,与其他3种处理存在显著的差异;在不加助剂时喷施乙基多杀菌素稀释1 250倍防效最好,5 d后对梨木虱的平均防效为75.9%,药后10 d药效维持在87.8%以上。

Field Efficacy Test of Several Biological Drugs Against Psylla chinensis Yang et Li

From the forest health theory,Shayidong Ecolocial Health Orchard was taken as object.Psylla chinensis Yang et Li were conducted efficacy drug experiments by using 0.5% veratridine soluble liquid（Sl） of Veratrum nigrum,0.3% matrine agent and 0.6% Spinetoram.Result shows that：0.5% original drug of veratridine,0.3% matrine,mixed original drug of 0.5% veratridine 0.3% matrine have significant phytotoxicity reaction on leaves branches of sweet pears.0.5% veratridine being diluted 500 times ＋detergent being diluted 1 000 times which have the optimal effect（being 82.9%）have the significant differences with other three treatmens while adding promoter.Spraying Spinetoram being diluted 1 250 times have the optimal effect without adding promoter;the average efficiency of controlling Psylla chinensis Yang et Li are 75.9% after 5 d;efficiency of drugs are above 87.8% after 10 d.