1. Stripe rust
It is necessary to fully implement the prevention and control strategy of "taking drugs to investigate and manage to protect the face", adopt preventive measures of "discover one point, prevent one piece", and control the disease center in time. When the average rate of diseased leaves in the field reaches 0.5% to 1%, it is necessary to organize large-scale emergency prevention and control to achieve full coverage of similar areas.
Can use 15% triadimefon wettable powder 60～80g, or 12.5% ​​diniconazole wettable powder 30～50g, or 30% kresoxim-methyl suspension 50～70ml, or 30% pyraclostrobin 25-30 ml of ester suspending agent, spray evenly to prevent water.
2. Powdery mildew, leaf rust
In the early stage of the disease, when the powdery mildew diseased leaf rate in the field reaches 10% or the leaf rust diseased leaf rate reaches 5%, 15% triadimefon wettable powder 60～80g can be used per mu, or 12.5% ​​diniconazole wettable powder 35 ～60g, or 25% pyraclostrobin suspension 30-40ml, or 250g/L propiconazole EC 35-40ml, mix with water and spray evenly for control.
3. Head blight
Adhere to the main points of prevention and control of "control at the right time and use the medicine to see the flowers". The first application of the medicine must be grasped at the early stage of wheat flowering, and strive to "flower one piece and control one piece". If the wheat blooms in overcast and rainy weather, you can choose to rain gap or grab the rain. Apply the medicine before, and reapply in time if it rains within 6 hours after the medicine, and then spray the medicine once every 5 to 7 days.
The choice of medicament can be 430 g/L tebuconazole suspending agent 15-25ml, or 25% cyanostrobin suspending agent 100-200ml, or 25% prochloraz EC 60-100ml, or 50% multi-bacteria 100 grams of Ling WP, spray water evenly on wheat ears for prevention and treatment.
4. Aphids
When there are more than 500 aphids in the field, 20-30 grams of 10% imidacloprid WP can be used per mu, or 20-25 ml of 2.5% lambda-cyhalothrin aqueous emulsion, or 50% haloxaflor Water dispersible granules 2 to 3 grams, spray evenly to prevent water.
Master the general principles of prevention and control
One is the scientific and rational use of medicines. Use high-efficiency, low-toxicity, and low-risk agents to strengthen the alternate rotation of agents with different mechanisms of action. It is recommended to apply pesticides and treat multiple diseases and insects at one time, and organize the implementation of "one spray and three preventions" at the earing stage in time to improve the effectiveness of pest control.
The second is to implement unified defense rule. Give full play to the role of socialized plant protection service organizations, and support and guide the development of unified prevention and governance service operations. At the same time, the masses are widely mobilized to carry out group prevention and governance, and joint prevention and control.
The third is extensive publicity and training. Make full use of the Internet, TV, radio and other media to transmit information on the occurrence of diseases and insects, organize experts and technicians to carry out online and offline training, and increase the penetration rate and the rate of prevention and control technologies.
The fourth is to strengthen technical guidance. Organize professional and technical personnel into the fields at the right time and place to guide the prevention and control of major wheat diseases and insects on the spot, and timely discover and solve the technical problems existing in the actual prevention and control. (Zhang Dingyi)
Do a good job in the mid- and late-stage management of wheat
In view of the current wheat growth situation, field management should focus on "water and fertilizer regulation, combination of promotion and control, disaster prevention and decay prevention, and increase in grain and weight". The focus should be on the following measures.
1. Apply jointing fertilizer and water jointing well
For wheat fields with average soil fertility and weak populations, fertilizer and water can be attacked early, and fertilizer and water management can be carried out at the early stage of jointing to promote the weak and strong.
For wheat fields with good soil fertility and suitable groups, topdressing and watering should be done in the middle of jointing.
For prosperous wheat fields with good soil fertility and large populations, the fertilizer and water should be moved as far as possible, and top-dressing and watering in the later stage of jointing to control prosperity and promote growth.
Water well enough to fill the blooming grouting water at the right time, watering once at the time of blooming to the filling period, can meet the needs of the later growth of wheat. However, excessive soil moisture before maturity will affect root vigor, so stop watering the wheat 10 days before maturity.
Focus on the prevention and control of sheath blight, stripe rust, head blight, midge and aphids, strengthen forecasting, check disease and insect conditions, accurately forecast, and timely control.
2. Harvest at the right time and dry after harvest
The end of wax maturity of wheat is the best period for harvesting. At this time, the dry matter accumulation reaches the maximum and the thousand-grain weight is the highest, so it should be harvested in time.
After harvesting, it should be dried in time to prevent rain and damp and mildew. Grain selection should be done before storage to ensure the purity and quality of wheat commercial grains.
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