20%乙酸铜水分散粒剂抗柑橘溃疡病的试验研究

用20%乙酸铜水分散粒剂对5 a生碰柑的嫩梢叶片正反面、及果实表面3次喷药,以72%农用链霉素可湿性粉剂500倍稀释液、77%可杀得可湿性粉剂800倍稀释液和清水作对照。结果表明:20%乙酸铜水分散粒剂400、500倍稀释液处理与72%农用链霉素500倍稀释液、77%可杀得800倍稀释液相似。

Experimental Study on 20% Cupric Acetate Water Dispersible Granule against Citrus Canker

In the paper,the surface of young shoots,leaves and fruits of 5 year old ponkan were spraied three times by 20% cupric acetate water dispersible granule,with 500 times dilution of 72% agricultural streptomycin wettable powder,800 times dilution of 77% ko-cidec wettable powder and clear water as control groups,to observe the control effect of 20% cupric acetate water dispersible granule against citrus canker and count its disease index and control effect.The results showed that the control effect of 400 and 500 times dilution of 20% cupric acetate water dispersible granule was similar to that of 500 times dilution of 72% agricultural streptomycin wettable powder and 800 times dilution of 77% ko-cidec wettable powder.