Wheat scab is a typical climatic disease. What are the effects of humidity on wheat scab?

Wheat scab is a typical climatic disease. What are the effects of humidity on wheat scab? The occurrence and spread of wheat scab are closely related to meteorological conditions such as temperature and temperature. Generally speaking, the continuous rainy weather with daily average temperature over 65438 05℃, air humidity over 80% and sunshine hours less than 5 hours is the most favorable condition for the propagation and spread of wheat scab spores. When such meteorological conditions last for more than three days, the spores of wheat scab will proliferate and spread. The longer the duration, the greater the probability of epidemic and the greater the harm. In addition, this year's warm winter climate made all kinds of crop diseases and insect pests overwinter safely, and the temperature and humidity conditions created conditions for the occurrence and epidemic of scab.

Wheat infected with scab will affect the yield and quality of wheat. If it is not properly controlled, it will reduce the yield of wheat. If a large-scale epidemic occurs, the yield loss can reach 10% to 40%, and in severe cases, it will lead to no harvest. When wheat production is reduced, the mycotoxin produced is harmful to people and animals. Eating sick wheat will cause dizziness, fever, nausea, diarrhea and other acute poisoning symptoms, and even cause bleeding in severe cases, affecting immunity and fertility, which directly poses a threat to human and animal health and life safety. Wheat scab is a preventable and treatable disease. In order to prevent the occurrence of wheat scab, the key is to control it in time. It is very important to master the timing of controlling wheat scab. To grasp the control opportunity, we must master the occurrence law of wheat scab.

Do basic prevention and strengthen agricultural prevention and control. Choose disease-resistant varieties, sow them late at the right time, avoid flowering period and open in rainy season; Adopt formula fertilization technology, apply fertilizer reasonably, and reduce the amount of nitrogen fertilizer conveniently; During the rainy season, irrigation and drainage should be reasonable, ditches should be opened in time, and the water in the depression should be released; Weeds, crop straws and other sick and disabled bodies on the edge of the field should be removed in time. Wheat scab is a typical climatic disease, and its prevalence is closely related to meteorological conditions. In the flowering period of wheat, if it encounters rainy days for more than three consecutive days, it may cause an epidemic. Rainy days for more than five consecutive days may lead to an epidemic. Therefore, paying attention to the weather forecast and preventing in advance is the first priority. If the temperature at heading stage is low and there is little sunshine, if wheat is heading first and then flowering, it should be used at the early flowering stage. If there is much rain at the heading stage, it is better to spray medicine early than late, so we should seize the opportunity of rain gap and spray medicine more times.