Pesticides lost to the environment float into the atmosphere through evaporation and transpiration, and the floating pesticides are adsorbed by dust in the air. Spread with the wind. Causing atmospheric environmental pollution. Pesticides in the air flow into water through rainfall, causing water pollution and endangering people and animals, especially aquatic organisms (such as fish and shrimp). At the same time, the loss of pesticides into the soil will also cause soil hardening. ?
2. Enhance the resistance of bacteria and pests to pesticides?
Long-term use of the same pesticide will eventually enhance the drug resistance of bacteria and pests. In the future, the control of similar pests and diseases must constantly increase the dosage of pesticides, otherwise the purpose of eliminating pests and diseases will not be achieved. Form a vicious circle. ?
3. Kill beneficial creatures?
Most pesticides kill all kinds of organisms indiscriminately, including those beneficial to human beings, such as frogs, bees, birds and earthworms. The reduction or extinction of these beneficial insects and birds actually reduces the natural enemies of pests, increases the number of pests and affects agricultural production. ?
4. Poisoning by wild animals and livestock?
Eating food contaminated by pesticides by wild animals and livestock and poultry can cause acute or chronic poisoning. Most importantly, pesticides will affect the reproductive ability of organisms. For example, many birds and poultry have reduced the weight of their eggs. Due to the influence of pesticides, eggshells are thin and easily broken. The extinction of many wild animals is directly related to pesticide pollution. Harm of pesticides to human health There are more than 500 kinds of synthetic chemical pesticides.
Pesticides also endanger the health of animals and plants.
(1) hinders the deep holes of crop roots and soil water absorption, resulting in weak seedlings, dead seedlings, lodging and yield reduction?
(2) Residual debris will also enter the food of cattle, sheep and other poultry with the feed of platycodon grandiflorum and crops. After livestock take the residual film fragments by mistake, it will lead to gastrointestinal dysfunction, fat loss and even death.
(3) Will burning sundries cause secondary air pollution?
(4) Some residual films are blown to the corners of fields, ditches, ponds and rivers, or hung on trees, causing environmental hazards.