不同天气两种农药对板栗膏药病药效试验

目的]更好地防治板栗膏药病。方法]以清水为对照,研究小雨天、晴天施用90%增效柴油乳剂和石硫合剂对板栗膏药病的防治效果。结果]晴天施药后30 d,90%增效柴油乳剂和石硫合剂的防效分别为93.93%、78.12%,药后60 d的防效分别为84.60%、72.44%;小雨天施药后30 d,90%增效柴油乳剂和石硫合剂的防效分别为96.50%、88.03%,药后60 d的防效分别为87.51%7、5.29%。无论是晴天还是小雨天气施药,90%增效柴油乳剂对板栗膏药病的防治效果都优于石硫合剂,且差异显著。同种药剂在不同天气施用防效有显著差异。结论]90%增效柴油乳剂和石硫合剂小雨天施用的防效高于晴天施用的防效。

Efficacy Test of Two Kinds of Pesticide against Chestrnut Plaster Disease under Different Weather Conditions

Objective] The aim of the research was to prevent and control chestnut plaster disease better.Method] With clean water as CK,the control effect of applying 90% synergistic diesel oil emulsion(SDOE) and lime sulphur synthelic solution(LSSS) in a rainy day and a sunny day against chestnut plaster disease were studied.Result] When the pesticides were applied in a sunny day,the control efficacy of 90% SDOE and LSSS were 93.93% and 78.12% resp.after 30 d and that were 84.60% and 72.44% resp.after 60 d.When the pesticides were applied in a rainy day,the control efficacy of 90% SDOE and LSSS were 96.50% and 88.03% resp.after 30 d and that were 87.51% and 75.29% resp.after 60 d.Whether the pesticides were applied in a sunny day or a rainy day,the control effect of 90% SDOE against chestnut plaster disease was better than that of LSSS with significant difference.The control effect of the same kind of pesticide applied under different weather conditions had significant difference.Conclusion] The control efficacy of 90% SDOE and LSSS that were applied in a rainy day were higher than that in a sunny day.