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黄瓜疫病由Phytophthora melonis Ka-tsura侵染所致,严重威胁黄瓜生产,通常可减产20%左右,部分田块失收。但目前缺少防治黄瓜疫病的有效农药。为明确甲霜灵防治黄瓜疫病的田间效果,我们于1986年在长沙进行甲霜灵防治黄瓜疫病试验。一、材料和方法试验农药:甲霜录是低毒内吸杀菌剂,瑞士进口,剂型为25%可湿性粉剂,试验浓度500倍。90%疫霉灵(疫霜灵,乙磷铝)可湿性粉剂,由江苏镇江江南化工厂提供,试验浓度600倍。50%托布津可湿性粉剂,日本进口,试验浓度500倍。
Cucumber blight is caused by the infection of Phytophthora melonis Ka-tsura. It is a serious threat to cucumber production. It usually reduces the yield by about 20% and some plots lose it. However, there is a lack of effective pesticides for controlling cucumber diseases. In order to clarify the field effect of metalaxyl against cucumber disease, we conducted metalaxyl control of cucumber disease in Changsha in 1986. First, the material and methods of test Pesticide: A cream record is a low toxicity systemic fungicide, Switzerland imports, dosage form is 25% WP, test concentration 500 times. 90% Phytophthora (phytoside, cefotaxime) WP, provided by Zhenjiang Jiangnan Chemical Plant in Jiangsu Province, with a test concentration of 600 times. 50% Topaz wettable powder, imported from Japan, test concentration 500 times.