The invention relates to a preparation method of a paddy rice injurious
insect slow-release attractant, which belongs to the technical field of injurious
insect prevention and control. The preparation method comprises the following steps: firstly soaking rice, then adding an alpha-
amylase preparation and
lactose to perform the culture, adding
sodium alginate into a culture solution to obtain a viscous solution for standby use, then heating and pressurizing rice
husk, swelling and
softening the rice
husk,
drying and crushing the rice
husk to obtain processed rice husk
powder, separately adding 1-octen-3-ol, pentanal,
maltol and vanilla
phenol into tetrachloromethane, diluting and dissolving to obtain an attractive solution, and mixing the attractive solution, the processed rice husk
powder and the standby viscous solution, thus obtaining the paddy rice injurious
insect slow-release attractant. The attractant prepared by the preparation method is long in
release time and uniform to release; by adopting the paddy rice as a slow-release base material and adding the attractant, the attractant has good attractive effect for various stored-grain injurious insects such as tribolium castaneum, rice
weevil and sawtoothed grain beetle; and the process is novel, and the cost is low.