Disease and pest control agent for rice seedlings and use method of disease and pest control agent

Abstract

The invention relates to a disease and pest control agent for rice seedlings and a use method. The disease and pest control agent comprises chlorantraniliprole, triflumezopyrim, 10% imidacloprid wettable powder, an auxiliary agent / and fucoidin, and also comprises a leachate of fresh stems of tripterygium wilfordii or / and fresh roots of Chinese pulsatilla. The pesticide is prepared into sprayable pesticide and slow-release solid particles by changing the types of auxiliaries, the pesticides in different forms are sprayed in the seedling raising period and sown in the planting period for slow release respectively, it is guaranteed that rice seedlings are not infected by plant diseases and insect pests before field transplanting, and the disease resistance of plants can be improved by applying fucoidin; after later transplanting, the pesticide effect is prolonged through slow release of the solid granular pesticide. The application frequency is low, the rice yield is stably improved, and the disease and pest control cost is low.

Description

technical field [0001] The invention relates to the technical field of rice plant protection, in particular to a pest control agent for rice seedlings and a use method thereof. Background technique [0002] Rice is a cereal crop belonging to the genus Oryza, native to China and India, which feeds nearly half of the world's population and has always been one of the key research objects. In order to increase the yield per mu of rice, it is one of the effective ways to increase the transplanting density appropriately. However, due to the delicate and weak stems and leaves of rice seedlings, they are often threatened by various diseases and insect pests during the growth period, such as: bakanae disease and rice blast at the seed stage , bacterial blight. Seedling stage: blight, bacterial blight, brown planthopper, rice thrips. Tillering stage: sheath blight, stem borer, rice leaf roller, rice planthopper, flax spot. Heading stage: rice stalk rot, rice blast, rice smut. The ...

AI Technical Summary

Problems solved by technology

The diseases and insect pests prevalent in different periods mentioned above have greatly inhibited the rice yield. In order to prevent the diseases and insect pests, the growers will apply different special chemicals in different growth cycles and spray them on the surface of the plants after dilution. Although it has a certain control effect, but many Spraying once will lead to more times of pesticide application, greatly increased cost, and greater environmental pollution, and most of the pests and diseases have developed to a certain extent before spraying, and the yield of rice will inevitably be affected.

[0003] Furthermore, pesticides have a short efficacy cycle and need to be applied multiple times, which further increases the cost of plant protection for rice.

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