According to the monitoring of the regional stations in the province, combined with the growth period and growth of rapeseed, historical data, climate and other factors. It is expected that Sclerotinia sclerotiorum will occur in the main rapeseed producing areas of our province, including Jianghan Plain and Edong 4, with 5 grades in local area and 2-3 grades in other areas. It is estimated that the rate of tuber disease in general field is 15%-40%, and the rate of diseased varieties in the Changfa area, heavy dry land, early indica, and poorly drained tubers may exceed 50%. The main epidemic period of the disease is from mid-March to mid-April, with an area of ​​about 8 million mu. Source factor From the end of February to the beginning of March, the monitoring stations investigated that the ascending sacs entered the germination period and the density of the sub-sacs per unit area was large. Average density of sub-sacs: 1.8/m2 in Jianghan Plain (Yunmeng County)-3.0/m2 (Dangyang City), 18/m2 (Xiaogan City), 2.4/m2 in Hubei (Daye City)-11 /m2 (Lianshui County), the highest 18 / m2 (Hong'an County), the northern Hubei and other rapeseed production areas are more than 1 / m2. According to statistics on March 15, the area of ​​sclerotinia sickness in the province was 3.309 million mu, an increase of 44% over the same period of last year. The incidence of the following leaves was the main disease, and the disease was heavier than the same period last year. The average leaf disease rate in Jianghan Plain is 2.5% (Xiaogan City) - 4.2% (Dangyang City), the highest 25% (Songzi City), and the average leaf disease rate in eastern Hubei is 1.2% (Hong'an County) - 8.6% (Hunchun) County), the highest 42% (Huangmei County). In a few counties, the stalks of the field were found to have lesions, and the average disease rate was 0.7% and the highest was 13% (Icheon City). Two varieties resistance According to many years of planting observations in our province, most of the Huayouzao and Zhongyouzao varieties are not strong against Sclerotium disease, which is beneficial to the occurrence of Sclerotinia. Three crop growth Affected by warm winter, the rapeseed in our province entered the flowering period about 10 days earlier than normal. The plant grows prosperously and the field is closed. The flowering period coincides with the peak of the germination of the ascending sac. The large-scale cold wave in mid-March is partially frozen. Cracking rods, plant resistance to stress, is conducive to pathogen infection and disease prevalence. Four weather factors According to the forecast of the meteorological department, the rain in the northwestern part of Hubei Province in the spring of 3-4 months in 2017 is more than 1-2%, and the other parts are less than 1-2%, and the temperature is high. The weather in the rapeseed producing areas has no obvious adverse effects on the occurrence of diseases such as sclerotinia and downy mildew. All localities should strengthen the monitoring and early warning of rapeseed diseases, downy mildew, aphids and other rapeseed pests and diseases, timely release information on pests and diseases, and guide farmers in scientific prevention and control. This article URL: 2017 rapeseed sclerotinia disease trend area and special drug control methods Tiamulin Fumarate,Tiamulin Swine,Tiamulin Chicken,Tiamulin For Animal Use Shandong Shengli Bioengineering Co., Ltd , https://www.shenglipharm.com