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经过田间试验及长期生产实践观察 ,朝鲜球坚蚧在河西走廊地区 1年发生 1代 ,以若虫越冬。石硫合剂对西部主要果树普遍发生的朝鲜球坚蚧 ,具有独特的防治效果。在朝鲜球坚蚧常用防治方法中 ,石硫合剂效果最好 ,具有其他化学药剂不可替代的作用 ,连年使用后 ,朝鲜球坚蚧的为害得到较好控制 ,果品产量比防治前提高数倍
After field experiments and long-term production practice observation, North Korea ball kestrel occurred in the Hexi Corridor 1 generation a year to nymphs overwintering. Stone sulfur mixture on the west of the main fruit tree common occurrence of North Korea ball scale, has a unique control effect. In the common method of prevention and treatment of Pyrenophora meleagridis, the stone sulfur mixture has the best effect and has the irreplaceable role of other chemical agents. After years of use, the damage of Pyrifolia dabryanus is well controlled and the output of fruit products is several times higher than before