论文部分内容阅读
经调查鉴定表明,危害河南虞城县小麦的小麦纹枯病菌为禾谷丝核菌。该病发生与小麦品种、播种期、肥水管理和气象因素有关。在田间自然条件下未发现免疫品种,但品种间抗性有差异,较抗病的有郑州891、内乡182和西安8号,感病品种有温麦4号、豫西832和宝丰7228等。麦田施氮肥过多,易造成小麦徒长,加重病害发生。春季药剂防治试验表明,10%井岗霉素用药量150g/667m2,药后65d防效达81.5%。
After investigation and identification showed that endangering wheat Rhizoctonia cerealis Rhizoctonia cerealis endangering wheat in Henan Yucheng County. The occurrence of the disease and wheat varieties, sowing date, fertilizer and water management and weather factors. There was no immune variety found under natural conditions in the field, but there was a difference in resistance among cultivars. Among the resistant varieties, there were Zhengzhou 891, Neixiang 182 and Xi’an 8, and susceptible varieties Wenmai 4, Yuxi 832 and Baofeng 7228 Wait. Wheat nitrogen fertilizer too much, easy to cause wheat leggy, aggravating disease. Pharmacy prevention and control tests in spring showed that the dosage of 10% Jingangmycin was 150g / 667m2, and the control effect reached 81.5% after 65d.