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Effects of pesticides on soil Some pesticides enter the soil directly after being applied to the soil, and are adsorbed by soil particles. The residual pesticides in the atmosphere and the pesticides on the fruit trees are washed by rainwater and fall into the soil to directly or indirectly contact with soil microorganisms to kill the soil. Microorganisms, which affect the maturity and permeability of the soil, destroy the soil aggregate structure, reduce soil fertility, and affect the growth and development of fruit trees.
The effect of pesticides on water and the atmosphere
Some of the sprayed pesticides are left in litter or soil, and are washed or irrigated by precipitation into polluted waters in ditches, ponds, lakes and rivers, affecting the growth and development of aquatic organisms. At the same time, pesticide particles move with the wind to pollute the air.
Effect of pesticides on orchard insects
Pesticides kill natural enemies while killing pests, destroying the ecological balance of the biological chain and the orchard, and at the same time making the pests resistant, leading to a sharp increase in the population of pests. Some minor pests quickly developed into major pests due to the sharp decline in the number of natural enemies. In addition, most pesticides have a killing effect on bees.
The impact of pesticides on humans and animals On the one hand, pesticides can directly enter the human and animal body through the respiratory tract, skin and digestive tract during the application process; on the other hand, pesticide residues in fruits, soil and water enter the human and animal body through diet or food chain. Causes indirect harm.
Source: Henan Science and Technology News
Pesticides polluting the environment of the orchard
Effect of pesticides on fruit trees After pesticide application, some of them remain on the surface of branches and fruits, and some of them penetrate into the stratum corneum or tissues of fruit trees to cause different degrees of phytotoxicity. Acute phytotoxicity can cause spots, yellowing, chlorosis, withering, leaf rolling, defoliation, fruit drop, constricted clusters, etc. in the leaves and fruits; chronic phytotoxicity can weaken the photosynthesis of fruit trees, delay flower bud formation, delay fruit ripening, taste The color is deteriorated, and even the death of fruit trees is caused.
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