How to prevent and control the second generation rice leaf roller and rice planthopper

Q: Zhu Jihua, Xingfu Township, Gangzha District, Nantong City: Preventing the second-generation rice leaf roller and rice planthoppers and chlorpyrifos plus thiazide isopropanil.

Answer: The chlorpyrifos has a good effect, but it has a short duration of validity and can be used to control rice leaf roller and rice planthoppers. Isoprocarb is also a quick-acting agent, which has a good control effect on Laodelphax striatellus. Laodelphax striatellus has a strong resistance to buprofezin and should not be used to control SBPH. There is a lack of long-acting agents in this formulation. It is used to prevent and control the combination of scutellare with pymetrozine and nitenpyram. The control of rice leaf roller can be combined with abamectin, indoxacarb, flubendiamide, etc. Drug mix.

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