With the pursuit of green and healthy food, pollution-free vegetables have become the "red people" in people's eyes. Pollution-free vegetables pesticide requirements in addition to the selection of efficient, quick, the most important thing is to secure, low toxicity and residue. So what kind of pesticides can meet the requirements of pollution-free vegetables?
1. New antibiotic preparations. For example, spinosad-resistant vegetable pests are highly efficient and quick-acting, but they are safe for humans and higher animals, and have a short safety interval, which is very suitable for use in vegetable fields.
2. Highly efficient and selective agent. For example, carbamate anti-Polygon is only highly effective against aphids (with triple action of contact, stomach poisoning, and fumigation), and has no harm to other organisms, and has a short residual period. It is safe for crops and natural enemies, and produces pollution-free vegetables. The ideal agent for maintaining the ecological balance of vegetable fields.
3. Biological pesticides. Biological pesticides have special effects on pests and are highly safe pesticides. They are characterized by high efficiency, low toxicity, no residue and slow resistance. Such as bacterial insecticide BT (Bacillus thuringiensis microbial insecticide), avermectin. Alkali plant insecticides; fungal insecticides (B. albicans); insect virus insecticides and insect pheromones (such as sex attractants).
4. Modern concept of plant-derived pesticides. That is, plant extracts (such as azadirachtin and chuanxiong) that have specific effects on pests such as refusal to eat, repel, hinder development, and interfere with reproduction.
5. Insect growth regulator. It can prevent the pests from peeling and interfere with development and play a controlling role. It is harmless to humans and higher animals, has little impact on natural enemies, and is environmentally safe. For example, it is widely used, such as yinbao, diflubenzuron, and chlorpyrifos. Drosophila and rice have also been promoted.
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