防治松褐天牛诱木设置密度及胸径大小试验

研究了三种不同规格胸径的诱木在每公顷设置1、3、5和10株诱木的林分内诱集松褐天牛的效果，采用在林内均匀挂设诱捕器作对照，同一面积内设置不同密度和不同胸径的诱木作对比试验，观察记录诱捕器诱捕成虫和诱木诱集幼虫的情况，分析总结了不同密度下的三种胸径诱木的诱集幼虫效果，提出了按胸径5-15cm和每公顷3株的密度设置诱木防治松材线虫病的传媒昆虫松褐天牛效果最佳。

Monochamus alternatus Prevention Induced Diameter at Breast Height Wood Density and Size Settings Test

Studied three different specifications of the induced tree diameter at breast height per hectare set in 1,3,5 and 10 induced wood stands Monochamus alternatus trapping effect, the use of uniform hanging in the forest set traps for the control, the same area of different density and different diameter of the wood induced contrast tests, observation of adult traps and trap trees induced trapping of the larvae, the analysis summed up in three different densities of wood diameter induced larvae trapping effect, put forward a by 5-15 cm diameter and 3 per hectare, the density of wood set induced pine wilt disease prevention and control of the media of insect Monochamus alternatus best.