欧李桃瘤蚜种群消长动态及药剂防治效果

The Decrease and Increase Trend of Tuberocephalus momonis Population on Prunus humilis and Its Control Effect by Chemical Agents

欧李桃瘤蚜种群消长动态调查结果表明:在吉林市船营区,欧李桃瘤蚜的出现始见于5月10日,6月29日达到全年的最高峰,7月9日桃瘤蚜数量有所下降,8月8日出现第2个峰值,9月初,桃瘤蚜不再危害。药剂防治试验结果表明:在所选择的3种化学药剂中,以10%吡虫啉2 000倍液退虫速度快、退虫率高,退虫率为93.8%;48%乐斯本乳油2 500倍液次之,退虫为83.1%;25%三氟氯氰菊酯乳油2 500倍液防治效果较差,退虫率为82.1%。;石硫合剂作为一种植物保护剂,虽然退桃瘤蚜效果较差,但能有效地抑制桃瘤蚜的发生,从而起到积极的防治作用。

The results from surveying the decrease and increase trend of Tuberocephalus momonis population on Prunus humilis showed that Tuberocephalus momonis began to emergence on 10,May,the number of Tuberocephalus momonis was up to the peak on 29,June and decreased on 9,July,the second peak of Tuberocephalus momonis number was on 8,August and Tuberocephalus momonis began to damage Prunus humilis from the first ten-day period of September.The results of the control effect by applying chemical agents indicates that the insect mortality of applying 10% Imidacloprid solution 2 000,48% Lorsban emulsion 2 500 and 25% Cyhalothrin emulsion 2 500 is 93.8%,83.1% and 82.1% respectively.Calcium polysulfide,a kind of plant protection,can effectively inhibit occurrence of Tuberocephalus momonis,which can play a positive effect of controlling Tuberocephalus momonis.