不同剂量药剂防治山楂梨小食心虫的综合效益评价

Comprehensive Benefits of Different Pesticides and Concentrations to Control Oriental Fruit Moth on Hawthorn

为有效防治山楂梨小食心虫,选用20%氰戊马拉松乳油（A1）、20%毒死蜱微囊悬浮剂（A2）和10%阿维除虫脲乳油（A3）3种有代表性的农药,分别配以3种剂量即400倍液（B1）、800倍液（B2）和1 200倍液（B3）,进行药剂喷施试验,以清水处理（B4）为对照,以好果率、好果产量、收入和净增纯收益4个农艺、经济指标为评价因素,对药剂防治综合经济效益进行同异分析。方差分析结果表明,3种药剂中,A2、A3防治效果（好果率）均较好,分别达到89.99%和89.94%;3种剂量之间无显著差异,防治效果在92.50%~95.83%。对好果率、好果产量、收入和净增纯收益4个因素的同异分析结果表明,A2B1综合效果最好,达到优良水平,其后依次为A2B2、A3B2、A3B3、A2B3、A3B1和A1B1,达到较好水平,以上7个处理的净增纯收益在8 626.5~13 615.5元/hm2。

In order to control oriental fruit moth effectively on hawthorn,a pesticide-spraying test was conducted by choosing three typical pesticides such as 20% fenvalerate with marathon EC( A1),20%chlorpyrifos MS( A2) and 10% abamectin with diflubenzuron EC( A3),matching with three kinds of concentration such as 400 times liquid( B1),800 times liquid( B2) and 1 200 times liquid( B3),respectively,and taking water( B4) as the control. At the same time,using four agronomic and economic indexes such as good fruit rate,good fruit yield,income and net benefits as evaluation factors,the similarity-difference analysis of comprehensive economic benefits of chemical control was made. Variance analysis results indicated that the control effects( healthy fruit rate) of A2 and A3 were all good among the three kinds of pesticides,reaching 89. 99% and 89. 94% respectively;There was no significant difference among the three kinds of concentration such as B1,B2 and B3,and their control effects( healthy fruit rate) were between 92. 50% and 95. 83%. The similarity-difference analysis results for healthy fruit rate,healthy fruit yield,income and net income showed that the comprehensive effect of A2B1 was best,followed by A2B2,A3B2,A3B3,A2B3,A3B1 and A1B1. Their net benefits were from 8 626. 5 yuan / hato 13 615. 5 yuan / ha.