Reducing the use of chemical fertilizers and pesticides, referred to as "double reduction in agriculture", briefly describes the hazards and manifestations of pesticide pollution.

Reducing the use of chemical fertilizers and pesticides is referred to as double reduction in agriculture. The harm and manifestations of pesticide pollution are reflected in the harm to crop soil, environment, ecology and human body.

1. Pesticide pollution to soil and crops. The large-scale, large-area use and improper abuse of pesticides, as well as the non-degradability of pesticides, have caused serious pollution to the earth and thus threatened human safety.

2. Pesticide pollution to the environment. Pesticides are usually applied by spraying, and the organic solvents and part of the pesticides in the pesticides float in the air, polluting the atmosphere. Farmland is washed away by rain, and pesticides enter rivers and pollute oceans. In this way, pesticides are carried around the world by air and water currents.

3. Pesticides cause ecological damage. Improper misuse of pesticides leads to pesticide resistance of pests and germs. According to statistics, the number of insecticide-resistant pests in the world has increased from 15 in 1991 to more than 800, and there are at least 50 types of insecticide-resistant pests in China. Insect-resistant pests further damage the ecology.

4. The harm of pesticides to the human body. Pesticides have serious toxic effects on the human body, irritating the skin, nervous system, digestive system, heart, etc.