纳米Cu_2O原药与悬浮液对菜瓜灰霉病菌的抑制作用

Inhibitory Effects of Original Nano-Cu_2O Drug and Nano-Cu_2O Suspension on Snake Melon Botrytis Cinerea

为比较纳米Cu2O原药与悬浮液对菜瓜灰霉病菌的抑制作用,研究采用含药培养基法进行了毒力测定.试验结果表明:同一质量浓度的纳米Cu2O悬浮液对菜瓜灰霉病菌的抑菌效果明显优于纳米Cu2O原药,抑制作用与质量浓度呈正相关;毒力回归方程的相关系数分别为0.892 2和0.996 1,纳米Cu2O原药与悬浮液对菜瓜灰霉病菌的有效中浓度EC50分别为3 948.9mg/kg和167.9mg/kg.因此纳米Cu2O原药对菜瓜灰霉病菌有一定的抑制作用,而纳米Cu2O悬浮液对菜瓜灰霉病菌的抑制作用非常明显.

The drug-containing culture medium method for the test of toxicity was adopted to compare in- hibitive effects of original nano-Cu2O drug and nano-Cu2O suspension on snake melon Botrytis cinerea. The results show that nano-Cu2O suspension has better inhibitive effects on snake melon Botrytis cinerea than original nano-Cu2O drug with the same mass concentration,and inhibitory effects are positively correlated with concentration; correlation coefficients of the toxicity regression equation are 0. 892 2 and 0. 996 1,ef- fective concentration EC50 of original nano-Cu2Odrug and that of nano-Cu2O suspension are 3 948.9 mg/kg and 167.9 mg/kg. Original nano-Cu2O drug has an inhibitive effect on snake melon Botrytis cinerea,but the in- hibition of nano-Cu2O suspension is more obvious.