去年在太平洋沿岸西北林区的森林内曾向四百万株美国西方白松喷洒抗生素放线双酮。有些树木是健康树木,这些树木不喷药能否活到成熟阶段是有问题的。其余大部分树木都是罹病树木,受着皰锈病的侵害,正在死亡过程中。就这种杀菌剂来说,不同的用途有不同的配方。最初由于其毒力较大易使植物遭受损害,因而其使用范围不免遭受一定的限制,但在混 Last year, four million western white pine were sprayed with antibiotics in the forests of the northwestern forested area of ​​the Pacific Ocean to release ketones. Some trees are healthy trees, and it is problematic for these trees to live without spraying. Most of the rest of the trees are diseased trees that are infested by blister rust and are dying. For this fungicide, different uses have different formulations. Initially because of its high toxicity and easy to damage the plant, so its use can not help but suffer some restrictions, but in the mix