在苹果树萌芽期,正逢螨冬卵(苹果、苜蓿红蜘蛛)破绽期——“胎螨”,喷布油乳剂(二十号脱后油或轻柴油)二百倍液,杀卵恰到好处,经济上合算。而且有益于保护越冬天敌和无毒损动植物机体。自一九七五年推广使用后,颇受果农欢迎。一、选用适宜的防治时期 (一) 杀越冬卵——“胎螨”,要抓住三个环节: 1.防治时期。金州地区在四月末至五月初。旬平均气温10.5～12℃; 2.冬卵破绽。苹果、苜蓿红蜘蛛有性冬 Sprout in the apple tree, is the mite winter eggs (apple, alfalfa spider) flares - “fetal mite”, spraying oil emulsion (on the 20th off the oil or light diesel oil) two hundred times the liquid, just right to kill eggs Economically cost-effective. But also beneficial to protect the overwintering natural enemies and non-toxic damage to the plant body. Since its promotion in 1975, it has become popular with fruit farmers. First, the choice of the appropriate control period (a) to kill more winter eggs - “fetal mite”, to seize the three links: 1. Prevention period. Golden State area in late April to early May. Ten days average temperature 10.5 ~ 12 ℃; 2. Winter eggs flaws. Apple, alfalfa spider mite winter