Wheat grouting to grasp "one spray and three defenses"
On May 2, the Wuqiao County Bureau of Agriculture organized technical personnel to go to the countryside to conduct field visits to the current state of wheat growth. After investigation, it is found that wheat is currently in the flowering stage, which is the critical period for the formation of wheat yield, and it is also a period of high incidence of pests and meteorological disasters. It is sensitive to the reflection of external conditions. It is the best time to implement the "one spray and three defenses" of wheat. The investigation also found that the current phenomenon of wheat field polarization is obvious, the normal growing wheat field, fertile soil, plant leaves rushing, green shoots from the root to the green shoots; some wheat fields, drought, insects, serious illness, pose a serious threat to the high and stable production of wheat . The main reasons are the following two aspects: 1. The drought is serious and the salinity is thin. Insufficient supply of water and fertilizer, soil cracking, compaction, resulting in wheat roots lack of oxygen, suffocation, rot, interrupt the upper nutrient supply, the first bottom leaves dry and yellow, the upper leaves wilting and curling, gradually extending to the top of the ear, resulting in a piece The whole plant is dry and dead. This is a series of problems brought about by the drought. 2. Overgrown with weeds and early aphids. The plots with severe drought conditions, due to the high base number of insects in the neighboring regions and the characteristics of the first heading of dry seedlings (small old seedlings), have created favorable conditions for the early arrival and serious development of wheat aphids. According to surveys, the density of insect populations in these types of plots is one to two times that of normal plots, which is the key to Wuqiao County's current prevention and control. From now on, it is necessary to adjust the measures to local conditions, pour wheat grouting water and gradually improve wheat production. Spray three defenses, to achieve the purpose of drought, pest control, disease prevention, to ensure the transformation and upgrading of wheat, high yield and stable production. Wheat "one spray and three defenses" technology focus: 1. Prevention and control of diseases and pests in the middle and late stages of wheat growth. "One spray and three defenses" spray time is from the heading of wheat to the grain filling period. The pests and diseases in this period mainly included wheat aphids, red spider mites, powdery mildew, rust, sheath blight, and head blight. 2. Control methods. Insecticide + fungicide + foliar fertilizer. 3. Control medication. Triadimefon + Imidacloprid + Potassium dihydrogen phosphate (Note: spraying triadimefon to avoid flowering, in order to avoid azole poisoning); tebuconazole + imidacloprid + potassium dihydrogen phosphate or green wind 95; cyanocastrobin + pyridine Insect mites + potassium dihydrogen phosphate or brassinolide. 4. Spraying method and liquid volume. Change the single spearhead to the top down the buckle, spray strict penetration, to ensure adequate liquid volume, mu liquid volume not less than 45 kilograms, and even spray 2 to 3 times, spray interval of 7 days.
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