松赤枯病,是我省人工和飞播马尾松、云南松幼林叶部的主要病害。分布广,为害重,影响林木生长,甚至引起成片枯死。松赤枯病的防治继贵州省林科所1973年用“621”烟剂防治后,我省马尾松赤枯病试验组于1974—1976年,又研究用“621”硫烟剂防治,效果良好。正在普遍推广应用的时候,工厂停产“621”改生产“741”烟剂。在大面积松赤枯病无有效药剂防治的情况下,我们根据“741”供热剂配方中,六六六原粉还占30%比例,对防治松赤枯病可能仍有作用的分析,于1978年用“741”烟剂进行室内药效 Pine blight, is the province of artificial and fly sowing Pinus, Pinus yunnanensis leaves the main disease. Widely distributed, as heavy, affecting the growth of trees, and even caused into pieces withered. Pine blight prevention and control Following the Forest Institute of Guizhou Province in 1973 with “621” tobacco control, the province Masson Pine Blight experimental group in 1974-1976, but also with the “621” sulfur smoke control, the effect good. Is widely applied when the factory shutdown “621” change production “741” smoke. In the case of large-area pine blight without effective control of pesticides, according to the “741” heat-supply formulation, 66% of the original powder also accounted for 30% of the proportion, the control of pine red blight may still have an effect analysis, In 1978 with the “741” smoke for indoor efficacy