【摘要】 描述了不同时期山东省农业有害生物种群数量变动，运用４６年资料建立预测式，预测“九五”时期农业有害生物种群数量呈上升趋势，发生面积和发生面积占种植面积的比例较“八五”时期分别增长１３５２％和１２５６％。提出实施ＩＰＭ对策，从生态系统整体出发，充分发挥自然控制的作用，尽量减少化学农药的使用量，逐步走向良性循环的轨道更多还原

【Abstract】 The change of population quantities of agricultural harmful living things in various period in Shandong Province was described,and the prediction formulae were established according to the data during the last 46 years.The population quantities of agricultural harmful living things were predicted in the period of the ninth five_year plan,with the outbreak area and its percentage covering plant area increasing by 13.52% and 12.56% compared with that in the period of the eighth five_year plan.In addition,the countermeasure of IPM was put forward.更多还原