【摘要】 调查和分析了昆虫种群数量在多样性植物种植园区的变化趋势。调查结果表明,在2002~2005年所调查的82种昆虫中,其增加、减少数量的呈先升后降趋势,消失数量的逐年增加,相同数量、未发现及新增种类的呈逐年下降趋势。由此看出,多样植物混种,使有效控制和防治大规模虫害的发生成为可能。更多还原

【Abstract】 The paper investigated and analyzed a changeable tendency of the variety and quantity of the insects in the plantation area of varied plants.The results indicated that it is a tendency that variety of increase and decrease quantity go up first and down later in 4 years;and increase of dissolved quantity year by year;but same quantity,disappeared and quantity of new increased variety come down year by year in investigated 82 kinds of insects during 2002 to 2005.This shows that it is possible to control and prevent large-scale occurring of pets effectively in mixed plant of varied plants.更多还原