吉林地区“123”苹果蛀果害虫发生规律及药剂防治

Occurrence and Chemical Control of Bore Fruit Pests of ‘ 123 ’ Apple

以7a生"123"苹果为试材,梨小、李小、桃小、苹小食心虫为诱芯,研究了吉林地区"123"苹果的主要蛀果害虫及2.5%氯氟氰菊酯乳油、40%的氧化乐果乳油、20%氰戊菊酯乳油对害虫的防治效果。结果表明:梨小、李小是危害"123"苹果的2种主要蛀果害虫。梨小食心虫有3次羽化高峰,其中以第1、3羽化高峰期较长,第2个高峰期峰值较高但持续时间较短;李小食心虫第1、3羽化高峰期峰值较高,持续时间较短,第2个高峰期峰值较低,但持续时间较长。药剂防治以地上部喷施2.5%氯氟氰菊酯乳油3 000倍液、20%氰戊菊酯乳油2 000倍液防治效果最佳;同期喷施40%氧化乐果乳油1 000倍液效果次之。

Taking 7 - year- old ＇ 123 ＇ apple as material, and Grapholitha rnolesta, Grapholitha funebrana, Carposina niponensis and apple fruit bore as lures,the main bore fruit pests of ＇123＇ apple in Jilin were studied,and the control effect of 2. 5% Cyhalothrin, 40% Omethoate, 20M Fenvalerate were studied. The results showed that Grapholitha molesta and Grapholitha funebrana were two main bore fruit pests to endanger ＇ 123 % apple. C-rapholitha molesta had three times of feather peak,in which the first and the third feather peak for long periods of time,the peak value of the second peak was higher but shorter duration; the peak value of the first and the third feather peak of Grapholitha funebrana were higher but shorter duration,the peak value of the second was lower but longer duration. The prevention effects of spraying 2. 5 % Cyhalothrin EC 3 000×, 20% Fenvalerate EC 2 000× were the best, second was spraying 40 Omethoate EC 1 000 ×.