CN-121986796-A - Tripterine-containing termite trapping bait agent and preparation method and application thereof

CN121986796ACN 121986796 ACN121986796 ACN 121986796ACN-121986796-A

Abstract

The invention relates to the technical field of green prevention and control of termites, in particular to a termite trapping bait containing triptolide, a preparation method and application thereof. The termite trapping bait comprises 97.5-98.5% of basic bait mixture, 0.000003-0.0002% of triptolide and the balance of auxiliary materials according to mass percentage. The invention can maintain the continuous feeding of the active ingredients in a specific ultra-low dosage range on the premise of not inducing termite avoiding reaction, thereby realizing the group-level chronic inhibition and nest-setting killing effects of the worker ants carrying poison back to the nest and diffusing in the nest group.

Inventors

LEI HONGJUN
LI GUOYONG
LIU YINZHAN
GAO KAI
Lv Zhengxun
HE FANGCHAN
YU YIQUAN
XIAO CIJUN
Qu Zhangbin
PAN HONGWEI
SUN ZHONGQIANG
JIA JUN

Assignees

华北水利水电大学

Dates

Publication Date: 20260508
Application Date: 20260305

Claims (10)

1. A termite trapping bait containing triptolide is characterized by comprising the following components in percentage by mass: 97.5-98.5% of basic bait mixture, 0.000003-0.0002% of triptolide and the balance of auxiliary materials.
2. The triptolide-containing termite bait formulation of claim 1 wherein the base bait mixture comprises papermulberry powder and corn flour.
3. The triptolide-containing termite bait according to claim 2, wherein the mass ratio of the papermulberry powder to the corn flour is (65-85) (13-33).
4. The triptolide-containing termite bait formulation of claim 1 wherein the adjuvant comprises a termite nursery residue, a binder and a preservative.
5. The triptolide-containing termite bait formulation according to claim 4, wherein the mass ratio of termite fungus garden residues, adhesive and preservative is (1-2): 0.3-0.5): 0.05-0.15.
6. A triptolide-containing termite trapping bait according to any one of claims 1 to 5, wherein when the bait is used for controlling subterranean termites, the triptolide is 0.000003 to 0.00003% by mass.
7. A triptolide-containing termite trapping bait according to any one of claims 1 to 5, wherein when the bait is used for controlling large yellow-fin termites, the triptolide is 0.00002 to 0.0002 mass%.
8. A method of preparing a triptolide-containing termite bait formulation according to any one of claims 1 to 7, comprising the steps of: S1, mixing triptolide and an organic solvent to obtain mother liquor; s2, mixing the mother liquor, the basic bait mixture and the auxiliary materials to obtain wet materials; S3, sequentially carrying out molding treatment and drying on the wet material to obtain the termite trapping bait containing triptolide.
9. Use of a triptolide-containing termite bait for controlling termites according to any one of claims 1 to 7.
10. The use according to claim 9, wherein the termites comprise at least one of black-fin subterranean termites, yellow-fin termites.

Description

Tripterine-containing termite trapping bait agent and preparation method and application thereof Technical Field The invention relates to the technical field of green prevention and control of termites, in particular to a termite trapping bait containing triptolide, a preparation method and application thereof. Background Termites are one of the important biological hazards that jeopardize the safety of hydraulic engineering dykes and dams. Among them, black wing subterranean termites and yellow wing large termites are used as the common soil termite species in the eastern and southern areas of China, and often nest in the soil bodies such as dykes, canal bases and tree roots, so that a huge nest group system is formed. The complex ant channel system is extremely easy to cause major engineering accidents such as dam leakage, piping, break down and the like, and seriously threatens the long-term safe operation of hydraulic engineering. At present, the termite control technology mainly comprises methods of chemical barrier, liquid medicine pouring, poison bait trapping and killing and the like. However, these prior art techniques suffer from various degrees of drawbacks (1) chemical barrier methods provide for the barrier of termite penetration into the protected area by creating a continuous layer of soil. However, the integrity of such physicochemical barriers is susceptible to environmental factors such as surface disturbances, rain erosion, animal excavation damage or cracking of the dike due to uneven settlement, which can lead to failure of the barrier layer due to chipping, and it is difficult to provide a durable and stable protective effect. (2) The liquid medicine pouring method needs to precisely position termite main nest and pour a large amount of insecticide under high pressure. However, as the soil termite nest is usually buried in the ground deeply, the structure is complex and no obvious mark is on the ground, the accurate and comprehensive positioning of the nest position is difficult to realize by the existing detection technology, so that the whole nest group cannot be effectively covered by the liquid medicine, and the prevention and control effect is poor. Meanwhile, excessive filling is also easy to cause liquid medicine waste and soil environment pollution. (3) On the one hand, commercial bait is developed for red solenopsis invicta, cockroach and other pests, and the bait matrix has low natural feeding matching degree with termites (particularly black-wing soil termites and yellow-wing large termites), so that the bait is poor in feeding attraction and difficult to attract the termites to continuously feed. On the other hand, existing bait dosage designs generally follow the principle of "linear enhancement of toxicity" or "empirical increment", and it is desirable to increase the kill rate by increasing the active ingredient content. However, this design ignores the complex behavioral response of termites as social insects. When the concentration of the agent in the bait exceeds a certain limit, termite workers can sense and generate avoidance behavior in the early stage of feeding, for example, soil is used for wrapping and isolating the bait, so that feeding is interrupted. Therefore, the medicament cannot be carried back to the nest by workers in a large amount and is transmitted in the nest group, and only a small amount of fed individuals can be killed, so that the killing of the whole underground nest group cannot be realized. In addition, although the prior art reports about the application of tripterygium wilfordii plant extracts to pest control, most of the prior art is directed at broad-spectrum poisoning effect tests of sanitary pests, and the prior art does not relate to a nonlinear influence mechanism of different doses on social feeding behavior of termites when the tripterygium wilfordii plant extracts are applied to termite control, and does not give out a specific technical scheme how to realize effective trapping and killing on the premise of not causing termite repellent reaction. Therefore, how to develop a trapping bait capable of overcoming the defects, having high feeding attraction for different termites, ensuring continuous feeding of the termites and transmitting the effective components to the whole nest group, so as to realize efficient and green prevention and control is a technical problem to be solved in the field. Disclosure of Invention The invention aims at solving the problems in the prior art and provides a termite trapping bait containing triptolide, a preparation method and application thereof, and the termite trapping bait is used for keeping continuous feeding of active ingredients under the premise of not causing termite avoiding reaction by accurately controlling the active ingredients within a specific ultra-low dosage range, so that the colony-level chronic inhibition and whole nest killing effects of carrying poison back to the nest of the