Liqiu has just passed, but many areas are still at a high temperature of around 35 °C, but according to weather forecasts, in the next 10 days, many places in the country will usher in cooling. For the rice that is heading, the pests and diseases are basically not needed to be controlled. At this time, the growers should focus on the occurrence of diseases, especially the sheath blight. The following small series will tell you about the current guidelines for the use of rice pests and diseases.
Sheath blight
Sheath blight is a fungal disease. In the process of temperature drop, the mycelium of the rice base may spread rapidly, and rice sheath blight is prone to occur. The resistance of sheath blight is strong. Generally, triazole fungicides have produced greater resistance, while methoxys such as azoxystrobin and pyraclostrobin have stimulating resistance, so The disease is more difficult to prevent.
Rice blast
In addition to sheath blight, rice blast is also the focus of rice disease control at this stage. The reason why the rice blast disease is difficult to treat is that it is different from other bacteria, it produces melanin, and the effect of the general control agent is not significant, so it is necessary to use a special rice blast agent. In addition, farmers' friends should combine the specific conditions of rice seeds when they fight drugs, so that they can choose which kind of medicine and dosage.
In terms of pests, the current excellent agent for the prevention and treatment of such pests is Wadonon bromide, which has the following advantages:
1 In addition to red spiders, large insects and small insects can kill;
2 worms and eggs are killed at the same time;
3 is equivalent to a protective fungicide. After using Vodaon, the small insects no longer bite the crop and cannot spread the disease;
4 is equivalent to plant growth regulators, which can increase crop growth;
5 low toxicity, high security.
The autumn seed work will be gradually started. The wheat planting work will be carried out in the second half of the year. Farmers should also do a good job in seed treatment and strengthen the use of seed coating agents.
The above is a small series of guidelines for the use of rice pests and diseases at this stage. The above-mentioned agents are for reference only, and the specific drug regimen should be combined with the actual situation.
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