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The destruction of agriculture and the environment What are the causes?

(1) pollution of water and land resources. Water and land resources major sources of industrial pollution in cities, rural

life, industrial pollution and pollution emissions, waste water, solid waste (tailings, waste, sludge and municipal solid

waste) and the farming of chemical fertilizers and pesticides .

(2) destruction of vegetation. With the social and economic development, people timber, firewood and agriculture, grazing

land and the population living space demand increases caused by the Deputy decreasing forest area. Indiscriminate felling of

trees Lankan serious cause of forest vegetation on climate regulation, air purification, to maintain diversity of plants and

animals, such as the role of fixed soil loss, desertification and soil erosion more serious. Overgrazing and unsuitable for

farming, causing grassland degradation. For these reasons biological population is shrinking, species are disappearing.

(3) agro-ecosystems have been destroyed. Grain and cotton crops grown too large, single crop structure, while ignoring the

"good ecological environment for sustainable agriculture", such as deforestation, deforestation, abuse of grasslands,

overgrazing overload, re-light support, and around Lake , Wai Hoi, pond and other acts, causing damage to vegetation, soil

erosion, land desertification, reduction of wild animals and plants, such consequences of natural disasters increases, the

destruction of the agricultural ecological environment.

(4) the environmental impact of chemical fertilizers. Heavy use of fertilizers cause pollution of rivers, lakes and

groundwater resources; Eutrophication in coastal biological threats; with excessive N, resulting in nitrite content of

vegetables exceeded its human health threat no; long-term use of chemical fertilizers will destroy the soil structure,

leading to soil compaction, organic matter decline, reducing fertilizer, soil acidification, a lot of non-nutrient or toxic

elements into the soil, leading to soil organisms such as earthworms reduced, leading to agricultural production.

(5) the impact of pesticides on the environment. Pesticides as an important means of agricultural production on the market,

creating great wealth for humanity, while the environmental safety and human health has also brought a certain threat. It

unscientific, uncontrolled use of pesticides, indiscriminate use, abuse toxic, highly toxic pesticides, resulting in

residual, residue, and the resurgence of environmental pollution, toxicity to humans and animals caused.
(6) the use of non-degradable plastics in agriculture. Agricultural plastic film is polyethylene or PVC products, it is not a

high molecular weight and stable performance characteristics under natural conditions of a hundred years to decompose.

Therefore, the plastic film over the soil, will seriously affect the physical properties of the soil, destroying soil

structure, impeding the activities of soil microorganisms. Plastic film in the soil, such as the formation of plastic barrier

will also impede plant root growth and nutrient and water absorption, resulting in cut. Plastic film with the straw into the

animal body, will result in decreased animal gastrointestinal function. Plastic film burning pollutes the air.