为探索和验证重庆某公司生产的1.8％阿维菌素乳油防治马尾松松材线虫病效果,采用3个剂量梯度和树干打孔注药法在江苏省溧阳市马尾松林进行了单因素对比试验,结果表明,该药在有效成分为0.135～0.18 g·cm-1胸径的剂量下对松材线虫均具有较好的防治效果,施药后30 d和60 d防治效果分别为65.0％～82.2％和74.4％～86.8％,显著高于对照不施药,且随着用量增加和时间延长防治效果有提高趋势,药剂持效期至少60 d.建议在松树发病前或松材线虫向松墨天牛蛹室聚集前注干施药1次,推荐使用剂量为0.135～0.18 g·cm-1胸径(药剂制剂用量7.50～10.00 ml·cm-1胸径),此浓度范围对松树安全,无药害发生,且对其他非靶标生物无影响.

The paper described the use of pesticide in the control of forest disease and pests in terms of pesticides kinds, application methods as well as their impact on the environment and forest products. The improvement advices for the use of pesticides were proposed.

The NE-trending Gaoligongshan Tunnel with a length of 39.4 km lies in the Baoshan-Ruili district of the Dali-Ruili Railway.This paper deals with technology of horizontal drilling hole in the tunnel geotechnical investigation.

Ptilinus fuscus breeds a generation every other year. Its papataks a period of 21 days and its larva has 7 instars. The erosion Popular period is postponed for 4 day as increasing of altitude for every 100 m. There are 3 generations which make a circle succession in a timber .The control effect in imago period adopting 200~400 times water solution of 80% DDVP emulsion comes to 95% for 3 successive years, and the control effect in larva period by brushing mothproof liquid on timber is more than 95%. Brashing the mothproof protective membrane could inhibit oviposting, and is antiseptic.