The invention discloses a
seed treatment method for preventing
aphelenchoides besseyi var. Oryzae infection, which comprises the following steps: step 1, selecting rice seeds and soaking with
warm water, step 2, mixing a
plant source active substance, a low-
dose chemical nematicide, a slow-release carrier, a synergistic additive and deionized water to prepare a composite treatment solution, step 3, completely immersing the pretreated seeds into a composite treatment solution, and step 4, naturally airing the seeds for 2 hours after the soaking is finished, then
drying the seeds with hot air, and finally packaging, sealing and storing the seeds, through the synergistic effect of the composite
plant source active substance and the low-
dose chemical nematicide and the slow release technology, efficient prevention and control of the
aphelenchoides besseyi are achieved, direct damage of a high-concentration agent to
radicle cells is avoided, the slow release carrier can reduce damage of
oxidative stress to embryonic cells, and the effect of preventing and controlling the
aphelenchoides besseyi is achieved. Nematodes in seeds can be effectively killed,
secondary infection of soil nematodes on seedlings can be inhibited, seed
germination and robust growth of the seedlings can be promoted, and the protection period is prolonged to reduce the
pesticide application requirement.