论文部分内容阅读
熏蒸剂混用是解决当前熏蒸剂种类少;防治害虫可能产生抗性;减少污染及残留的途径之一。本文试图采用几种熏蒸剂混用增效数理模型及实际混用实验估价溴甲烷及二硫化碳混用的增效类型、增效程度等。实验证明,溴甲烷和二硫化碳对谷血皮蠹幼虫的毒力之比约为5∶2。在25℃下,用溴甲烷、二硫化碳2∶5混合熏蒸处理谷斑皮蠹幼虫5小时,杀虫效果比二者单用增效极为显著,其增效类型可能是两种熏蒸剂分别作用于虫体内的不同生物系统,联合作用而增效的。在低死亡率下,增效效果更为明显。
Fumigant mix is to solve the current small number of fumigants; pest control may produce resistance; reduce pollution and residue of one of the ways. This paper attempts to use several fumigant mixed efficiency mathematical model and the actual mixed experiment evaluation of methyl bromide and carbon disulfide mixed with the type of efficiency, efficiency and so on. Experiments show that the methyl bromide and carbon disulfide poisoning larvae Guggenaeru ratio is about 5: 2. At 25 ℃, with methyl bromide, carbon disulfide 2:5 mixed fumigation Gupao larvae 5 hours, insecticidal effect than the two synergistic effect is extremely significant, its synergistic type may be two kinds of fumigation agents were applied to insects Different biological systems in the body, combined effect of synergy. Under the low mortality rate, the synergistic effect is more obvious.