Banker plant system for preventing and curing rice leaf folders and rice stem borers

Abstract

The invention discloses a banker plant system for preventing and curing rice leaf folders and rice stem borers. The banker plant system comprises three portions, namely, (1) a vector plant, (2) replacement hosts and (3) a parasitic wasps. The vector plant is vetiver grass belongs to the grass family; the vetiver grass is a luring plant of borers (pink rice borers and the rice stem borers); the replacement hosts are the pink rice borers and the rice stem borers laying eggs in the vetiver grass; the pink rice borers and the rice stem borers are continuously lured to the vetiver grass to lay eggs in a rice growing season to provide hosts for the parasitic wasps; the parasitic wasps are egg parasitic wasps such as rice borer trichogramma and yellow borer trichogramma; the vetiver grass is planted at rice field edges or ridges; 10 to 50 bundles of vetiver grass is planted in every mu of rice field in a dispersion or gathering mode and the bundle distance is from 2m to 3m. The banker plant system for preventing and curing the rice leaf folders and the rice stem borers continuously breeds the parasitic wasps for the rice leaf folders and the rice stem borers (the pink rice borers and the rice stem borers), effectively improves the biological preventing and curing effect, reduces 2 to 3 times of chemical pesticide utilization in one season, is long in acting time, simple and easy to operate and strong in practicability.

Description

technical field [0001] The invention relates to the technical field of biological control of crop pests, in particular to a carrier plant system for rice leaf rollers and rice stem borers. Background technique [0002] The carrier plant system (banker plant system) is a recently developed new biological control technology, also known as the open-rearing system (open-rearing system), mainly including carrier plants (banker plants), alternative food (alternative food) and beneficial Biological (beneficial organisms) three elements, a complete carrier plant system includes at least two of them. Among them, the carrier plant is the most important element, which is generally a non-target crop or a wild plant, but it can also be a mixture of several plants. It is mainly used to raise alternative hosts or prey to provide food resources to beneficial organisms, or the carrier plant itself is directly used to raise beneficial organisms (such as predatory natural enemies). [0003] ...

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Problems solved by technology

[0006] Aiming at the existing problems in the prevention and control of rice leaf roller and rice borer, the present invention provides a carrier plant system for preventing and controlling rice leaf roller and rice borer, the purpose of which is to solve the existing problems of rice leaf roller and rice borer. There are many serious problems such as excessive use of chemical pesticides for borer control, ecological imbalance in rice fields, excessive pesticide residues in rice, and environmental pollution. By planting carrier plants (vetiver) beside the rice fields, the parasitoids are continuously bred and used as a parasitoid species bank for the paddy fields. Provide bee sources, increase the number of parasitic wasps in rice fields and their biological control effects on rice leaf rollers and rice borers

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