666杀虫药剂,是一种慢性挥发的农药,成本不高,常被用作苗圃土壤消毒。在用于马尾松苗圃地消毒中,经常发现有苗木中毒,根部生长受抑制,不能充分供给水份和营养,造成大面积生长不良或死亡的现象,也有苗木不中毒,而且苗木根系发达,育成质量优良的苗木。我们知道毒理学上一个重要定律是:任何毒剂在浓度很低时都 Insecticide 666 is a chronic volatile pesticide that is not expensive and is often used as a nursery soil for disinfection. In the nursery for the Masson pine disinfection, seedling poisoning is often found, root growth inhibition, can not fully supply water and nutrition, resulting in large areas of poor growth or death phenomenon, but also seedling not poisoning, and seedlings developed root system, breeding High quality seedlings. We know that one of the important laws in toxicology is that any poison is at very low concentrations