磷化氢-二氧化碳混合熏蒸对烟草甲虫卵灭杀效果研究

磷化氢-二氧化碳混合熏蒸对烟草甲虫卵灭杀效果研究

彭涛;刘师伟;谭琳;余兴江;郭年梅

【期刊名称】《农业科学与技术（英文版）》

【年(卷),期】2015(000)012

【摘要】Objective] This study aimed to investigate the kil ing effect of mixed fumi-gation of phosphine and carbon dioxide on eggs of Lasioderma serricorne F. [Method] The outside-storage phosphine generator was placed in a tabernacled smoke box, and the mortality rates of L. serricorne F. eggs in the smoke box under conditions of different aluminium phosphide usage amount and different fumigation time were studied. In addition, the times needed by tabernacle and smoke box cen-ter to reach the phosphine concentration peak were recorded. [Result] The optimum conditions for kil ing the eggs of L. serricorne were as fol ows: temperature of (27± 2) ℃, relatively humidity of (45±5)%, aluminium phosphide usage amount of 1.5 g/m3 and effective exposure time of 96 h. The kil ing effect of mixed fumigation of phos-phine and carbon dioxide was increased with the extension of fumigation time. The increased usage amount of aluminium phosphide showed no significant effect on kil ing effect. The tabernacle space and smoke box center al required relatively short time to reach the phosphine concentration peak. If the tabernacle had a good airtightness, the overal fumigation time could be shortened.