# Gu Feng Plan # Rice drill heartworm, in fact, is a general term, in the actual planting process, we are accustomed to the two borer, three borer, called drill heartworm, two borer, three borer we all know, as long as it is a friend who grows rice, there is no dislike of them, in the past it was good to prevent, in recent years, with the increase of resistance, some pesticides hit up, completely ineffective, a rice plant, dozens of insects, straight worried.
Rice dimorphic borer: at the beginning of the larvae into the leaf sheath harm, wait until 2-3 years old, drill into the stem, harm the stem, and then, after 3 years old, the whole rice plant will be endangered, to the normal growth of rice, bring impact, from the point of view of the symptoms of harm, will cause dry heart, dry pregnant ears, white ears, etc., not timely prevention and control, the final yield and quality will be reduced.
Rice three-way borer: it is also a larval drilling moth rice plant hazard, the main feeding site has leaf sheath tissue, ear buds and rice stem inner wall, the hazard symptoms are similar to the dimorph borer, such as dry heart seedlings, dead pregnant ears, white ears, etc., not timely prevention and control, also affect the final yield and quality.
For drill heartworms (dihua borer, triple borer), it is recommended to focus on prevention, and if it has occurred in the field, it should be prevented and controlled in time.
1. Natural enemy control can be used, and there are many types, such as red-eyed bees, black egg bees or small bees.
2, chemical control, from the pesticide registration certificate and the actual use of the process, the prevention and control of drill heartworm agents mainly include: avermectin, triazophos, chlorantranoid benzamide, insecticidal double, chlorpyrifos, chlorpyrifos, methoxychlorhydrazide and other single agents, the above agents, in different areas, the use effect will also be different, the common reason is that the resistance of drill heartworms is too large, resulting in insecticide spraying, the prevention effect is very poor, but there are also better prevention effects.
In addition to the above single doses, there are some compound agents, such as Chlorpyrifos, Avi Beetle Hydrazine, Avy Chlorpyrifos, Avy WormIng List, Avy Trizophos, Imidacloprid, Imidacloprid, Thiamethoxine, etc., for some resistant areas, you can choose compound agents for prevention and control, according to some farmers, some agents are not good in other places, but they have a good effect in their local areas, so when controlling drill heartworms, we should pay attention to the reasonable choice of agents.
On the question of what kind of medicine to use for the prevention and control of heartworms, the little helper said so much, I hope that after reading it, you can gain something, if you have other problems or better prevention and control experience, welcome to leave a message in the comments below, and everyone will discuss and learn together.