Control of drillworm in growing rice

Netizen Yeshan Judicial Office sent an email on July 4: I am a staff member of the town agricultural station, and now we have too many rice heart worms here, which is difficult to treat! I asked farmers to use wild killing and dimethoate, and the results showed that the effect on the control of heart worms was poor. Excuse me, what method should be used to control heart worms?

Answer: the three kinds of rice stem borer, Chilo suppressalis and Chilo suppressalis, all have the common name of heart-drilling worm. to prevent and control rice borer, the drug should be used before the larvae drill into the rice plant, generally in the egg incubation period, and the effect is often poor after the larvae drill into the rice plant.

At present, the rice stem borer is mostly caused by rice stem borer, which has the harmful habit of transforming plants, and one larva can cause multiple tillers to die.

The control of Chilo suppressalis can be achieved by applying chlorpyrifos, avermectin and their mixture with insecticides, such as chlorpyrifos, avermectin and their mixture with insecticide, to control Chilo suppressalis. Diazinon, butene fipronil (similar to fipronil is one of the best drugs to control Chilo suppressalis), chlorobenzamide, fipronil, cyflufenozone and other drugs also have good control effects. Among them, diazinon, butene fipronil, chlorobenzamide and flubenzamide have good internal absorption and conductivity. when the suitable period of control is missed and Chilo suppressalis has been drilled into the rice leaf sheath, it also has better control effect. it can effectively reduce the harm of rice stem borer transplanting.