当归水烂病病原菌毒力测定及田间防治试验

采用离体抑菌圈法测定了6种杀菌剂对当归水烂病的毒力，结果表明，77％氢氧化铜可湿性粉剂320ug/mL、30％扫细（琥胶肥酸铜）悬浮剂200、400ug/mL和85％三氯异氰尿酸可溶性粉剂20、40ug/mL的抑菌圈直径均〉2．0cm，具有良好的抑菌效果。在试验浓度范围内，各药剂随着浓度的提高对病菌的抑制作用增强。田间防效试验结果显示，77％氢氧化铜可湿性粉剂2．50、3．00g/L浸根处理的防治效果分别达到78％和88％，其它3种药剂处理防效较低。

Toxicity Determination of Fungicides on Water Rot Pathogens of Angelica Indoor and Its Control Test in Field

In this paper, six kinds of fungicides on the Angelica water rot virulence was determined by using indoor vitro inhibition zone way. The results showed that it has a good antibacterial effect, the inhibition zone diameter was higher than 2.0 cm which 77% of copper hydroxide WP 320 ug,/mL, 30% sweep fine（amber plastic fertilizer acid copper） SC 200,400 ug/mL, and 85% TCCA soluble powder 20, 40 ug/mL. In the experimental concentration range, the concentration of bacteria inhibition enhanced with various chemical treatments significantly increase. At the same time, the field efficiency test results showed that 77% copper hydroxide WP 2.50,3.00 g/L soaking seedling treatment control effect reached 78% and 88%, other three kinds of various concentrations of drug control effect were generally low.