摘要
1992～ 1997年在高平梨区对梨木虱的抗药性、防治时期及农药品种的调整进行了比较系统的试验。结果表明 ,控制梨木虱以全杀性杀虫剂类农药效果较好 ;树体喷药防治的最佳期为花前 ,其次为麦收前 ;梨木虱对各类农药均可产生抗药性 ,主导农药品种应在 3～ 4年内调整 1次。
A relative systematic study on drug resistance,coutrol time and Pesticide adjustment were carried out in Gao ping County pear production region.,The results are the following.Holotarget insecticides are of good effect;The optimum tree truck spraying time is before blooming or before wheat harvesting;And pear trees show drug resistance to all pesticide and the leading insecticides to need change in every 3～4 years.
出处
《山西农业科学》
2002年第2期63-65,共3页
Journal of Shanxi Agricultural Sciences
