In 2017, the predicted area of ​​wheat scab disease will exceed 100 million mu and need to prevent 200 million mu.
Wheat scab is a typical climatic epidemic disease. This year, the field bacterial sources are widely distributed and large in quantity, and the wheat varieties have poor disease resistance. Combined with the weather characteristics of the rainfall process during the heading and flowering period, it is expected that the wheat scab will be popular in the middle and lower reaches of the Yangtze River and the Jianghuai wheat area, and the wheat area in the southern Huanghuai area will be more prevalent. In the north of Huanghuai and the wheat area in the south of North China, the area is about 100 million mu, and the area to be protected is about 200 million mu. The control period is from wheat head to early stage of flowering. 1. The pathogens in the field are widely distributed and large in quantity. In the middle and lower reaches of the Yangtze River, the Yangtze River, the Huaihe and the Huanghuai, the common areas of rice and wheat, jade and wheat are continuous cropping, the proportion of straw returning area is over 90%, the rate of rice pile and corn stalk is high, and most of the wheat area is close to or higher than that. year. The rates of rice-branched shoots in Hubei, Zhejiang, Anhui, Jiangsu, and Shanghai were 7.3%, 5.8%, 3.4%, 1.7%, and 1.3%, respectively. The rate of rice-pile colony in Pingqiao, Henan, and the rate of corn-stalk in flat corn were 32.5%. 17.9%, the amount of field bacteria meets the pandemic conditions. The maturity index of the ascots in Jianghan Plain, Jianghuai and its southern areas is generally 25-60, more than 60 in Yanjiang wheat area, 10-20 along Huaihe and Huaibei, normal pathogen development, spore release time and wheat susceptibility The period of coincidence is high. Second, the variety resistance is weak, and the susceptible growth period is highly consistent with the infection period of the bacteria. The main wheat varieties in Changfa District are susceptible to scab, because the sowing date of rice and wheat in the middle and lower reaches of the Yangtze River and the Jianghuai wheat area is delayed and not uniform, and the wheat growth process varies greatly. At present, the southern part of Jianghan and the area along the Yangtze River are in the early stage from Qisui to Yanghua, and the middle and lower reaches of the Yangtze River, Jianghuai and Huanghuai are in the booting to heading stage. The spore release period of Fusarium graminearum was consistent with the heading and flowering stage of wheat, and the flowering period of the middle and lower reaches of the Yangtze River and the Jianghuai wheat area was extremely irregular. The susceptible period of wheat was prolonged, and the probability of rainy weather increased, and the threat of disease epidemic increased. Third, weather conditions are beneficial to disease epidemics According to the forecast of the meteorological department, in the middle and late April, there will be multiple rainfall processes in Jianghan, Jianghuai, southern Huanghuai and the southwestern part of the country, which will be beneficial to the infection of Fusarium; in May, the precipitation in the upper part of Jianghuai and Jianghan will be more than 2-5. In the southern part of Chengdu and Huanghuai, more than 1-2% will increase the severity of the disease caused by scab. The main producing wheat area has high humidity, smog, condensation and other weather, which will also promote the epidemic of scab. Wheat scab is explosive, fast, and has a large loss. The disease is important in prevention. The middle and lower reaches of the Yangtze River and the Jianghuai wheat area should be applied as early as possible in the early stage from Qishen to Yanghua according to the progress of wheat heading and flowering, to minimize the occurrence of spasticity and damage. According to the local wheat growth period and weather forecast, the wheat fields in Huanghuai and southern China should be timely issued with early warning, scientific guidance for timely prevention and control, and wheat production safety. This article URL: 2017 wheat scab disease prediction area will exceed 100 million mu to prevent 200 million acres Botanical Extract refers to the material extracted or processed from plants (all or part of plants) with appropriate solvents or methods, which can be used in the pharmaceutical industry, food industry, health industry, beauty industry and other industries. Botanical Extract ,Andrographolide Powder ,Kaempferol Powder, Isolated Soy Protein Meat Xi'an Double H Health Technology Co., Ltd , https://www.xadoubleh.com