摘要
本试验在21％、17％、14％、11％、8％、5％、2％七组氧浓度和0．025、0．020、0.015、0.010、0.005mg/1五组磷化氢剂量条件下，对赤拟谷盗、锯谷盗、谷蠹三种成虫进行了毒杀效果的研究。试验结果表明，在本试验所选择的磷化氢剂量区间内，随氧分压的降低，杀虫效果呈增高趋势；当氧分压降低致11％—5％区间时，低氧分压对磷化氢杀虫的增效作用最为显著，二者呈线性关系。在本试验所选择的氧分压范围内，随磷化氢剂量的增高，杀虫效果增加。对三种仓虫在低氧低磷化氢剂量条件下的毒力回归方程、LD60值、LD95值及增效指数的数理统计结果表明，把磷化氢剂量保持在0．030～0．054mg/1，氧分压保持在11％—8％的区间内，是一组技术经济性较强的双低储粮技术组合条件。
Effect of oxygen concentrations (21, 17, 14, 11, 8, 5, 2%) and 5 doses of PH3 (0.025, 0.020, 0.015, 0.010, 0.005mg/1) on Tribolium castaneum,Oryzaephilus surinamensis and Rhyzopertha dominica has been studied. The results showed that within the selected range of PH3 dose in the study,the effect of low oxygen on insects increased with the oxygen pressure dereased. The synergy of PH3 on insects was significant whell low oxygen pressure decreased 11-5%. The mathematical statistics of toxicity regression formula, LD50, LD96 and synergy index showed that PH3 dose kept 0.030-0.054mg/l, oxygen pressure 11-8%, it is a desirable combination for controlling the three stored insects
出处
《粮食储藏》
1994年第1期8-13,共6页
Grain Storage
