泡桐是我区主栽的速生用材树种,在林业生产中占有十分重要的地位。但是近年来,由于泡桐网蝽大面积发生,使林木出现早期落叶,甚至整株枯死。据鲁山县瓦屋公社楼子河大队调查:有虫株率95%,最高虫口密度(胸径10—15厘米)达25万头,被害株材积生长每年减少15—30%左右,对林业 Paulownia is my fast growing timber species, occupy a very important position in the forestry production. However, in recent years, due to the large area of ​​the Paulownia nematodes, early deciduous trees appear, and even the whole plant dies. Lvshan County, according to Lvwu House Louzi River Brigade investigation: a worm rate of 95%, the highest population density (diameter 10-15 cm) reached 250,000, the victim volume growth of about 15-30% annual reduction of forestry