Plant powder pesticide and preparation method thereof

Abstract

The invention discloses a plant powder pesticide and a method for preparing the same. The plant powder pesticide comprises the following plant raw materials in weight portion: 200 to 300 weight portions of macleaya cordata, 300 to 400 weight portions of euphorbia humifusa, 200 to 300 weight portions of polygonum spicy, 50 to 150 weight portions of licorice powder, 300 to 400 weight portions of anisodus mairei, 150 to 250 weight portions of cortex pseudolaricis, 200 to 300 weight portions of cortex moutan, 150 to 250 weight portions of agrimony, and 150 to 250 weight portions of lycoris radiata. The method is relatively simple to operate, is carried out at normal temperature and pressure, and consumes low energy; and various plant raw materials can be combined together to be extracted most properly at the normal temperature, and mutual influences of the components are smaller. The plant powder pesticide has better killing effect on rice leaf insects, cabbage caterpillars, and aphids. The antifeedant rates to pests are more than 96 percent, and the mortality rate is more than 80 percent. The plant powder pesticide adopts a compound preparation of various plant components so that pests are not easy to generate drug resistance generally.

Description

technical field [0001] The invention relates to a pesticide, in particular to a plant powder pesticide compounded from various plants. The invention also relates to a preparation method of the plant powder pesticide. Background technique [0002] Because some chemically synthesized pesticides are highly toxic, difficult to degrade, and have high residues, they have caused catastrophic damage to the ecological environment during production and use, and directly threaten the human reproductive system and nervous system, and pose a threat to children's brain development. Injury, resulting in low immunity of the human body and increased incidence of cancer. At the same time, due to the long-term use of chemically synthesized pesticides, pests have developed resistance, which has brought difficulties to chemical control. In order to protect the natural environment and human health, searching for "green" pesticides with high efficiency, low toxicity, no pollution, and no residue...

AI Technical Summary

Problems solved by technology

[0004] However, due to the complex components contained in the plant, in addition to the effective ingredients for killing insects, it also contains other organic matter, which makes the shelf life of the plant pesticide short and unstable, especially the liquid plant pesticide is prone to precipitation after a period of time, which is very The earth affects the efficacy and field use of plant pesticides