Why does burning straw cause pollution and how to treat it to help protect the environment?

Straw is the waste from the rice plant, many farmers can’t help but wonder that the straw is not only used for burning, but also used for fertilizing the fields, so every season, people burn straw everywhere. everywhere. The following article would like to share some information to help people better understand about straw and the harmful effects of environmental pollution when burning straw.

Why does burning straw pollute the environment?

When burning rice straw, it will produce CO, CO2, NO2, SO2, H2O, and hundreds of other compounds harmful to human health … Moreover, straw smoke is often spicy, causing tears, cause irritation in the throat , causing people to cough, sneeze, have a bad voice, nausea, wheeze, or have a feeling of suffocation.

According to PSG.Dr. Nguyen Thi Anh Tuyet, Institute of Science, Technology and Environment , Hanoi University of Science and Technology, in open combustion processes such as honeycomb charcoal cooking, smoke is generated such as agricultural by-products and straw. straw, paper, wood…, waste burning, house fires, forest fires … are burned at low temperature, so they burn completely, so a series of pollutants will be generated, including dust, CO2, metals such as Lead, mercury, zinc, arsenic… When burning outdoors, it also causes haze and affects visibility, especially on traffic sections.

According to the calculation of Prof. Nguyen Lan Dung: “On average, one hectare of rice yields 10-12 tons of straw. The burning of this huge amount of agricultural waste will produce a large amount of CO, CO2, NO2, SO2, H2O, and hundreds of other compounds that are harmful to human health. Burning a large amount of rice straw will increase emissions into the atmosphere, causing a significant impact on the electricity grid.

Scientists show that burning straw is also self-polluting air dust and small particles of dust, nano-dust, from burning rice straw has the ability to penetrate deep into the cell nucleus.

The case of burning rice straw right in the field to ashes also makes the organic matter in the straw due to high temperature turn into inorganic substances , making the field harden, losing the remaining nutrients. in the ash is only phosphorus, potassium, calcium and silicon… not much help for plants.

To minimize climate change, on Earth Day, let’s join hands to take any small action to help clean the air and clean the environment, such as cleaning up trash, turning off electricity, recycling, etc. …

See more: What date does Earth Hour 2023 take place? Origin, meaning

How to properly handle straw

If you know how to use straw, it will bring you many benefits. Instead of burning straw, polluting the environment, you can do it in a few ways.

Make organic fertilizer

For every 1 hectare of rice, about 10 tons of rice straw will be produced, if burned, it will waste organic matter as fertilizer, but if you do not burn it but treat it with biological products, you will get about 400kg of organic fertilizer.

Calculated at the national rate of 45 million tons of rice straw, if treated, it will be 20 million tons of organic fertilizer , helping farmers save money on buying chemical fertilizers equivalent to: 200,000 tons of nitrogen, 190,000 tons of fertilizer. Phosphorus and 460,000 tons of potash amounted to nearly 11,000 billion VND.

Use to create soil fertility

In some places, combine harvesters are also used, through which the straw will be chopped and mixed by the machine right in the field, after a short time will rot and become a source of organic fertilizer.

Utilize as transportation material

Use to line fragile items or line fruit boxes when transporting long distances.

Growing straw mushrooms

Straw is used to grow mushrooms, according to some recent studies, for every 1 ton of straw used to grow mushrooms, 780 kg of fresh straw mushrooms will be obtained .

Making animal feed

Straw is the favorite food of livestock such as buffaloes, cows, … straw can be kept for a long time without being damaged. Just dry it and then pack it up for cattle to eat slowly.

In fact, straw has a lot of benefits, right, but the important thing is how you use it to maximize its effectiveness while limiting the impact of environmental pollution.

Source: vovgiothong.vn

Good experience lassho.edu.vn