Worldwide use of straw
In the United States
there are 24 agricultural states that can collect about 45 million tons of straw each year, which is used as feed, or used to build houses, and the whole bales of straw are extruded with high strength to fill the walls of new houses; in addition, the United States is also actively promoting In the renewable energy business, straw is used as an emerging alternative fuel, especially biofuel.
In Europe
it has created a new way of straw power generation.
In Japan
people mainly turn the straw into the soil layer and return it to the field as fertilizer, and also use the straw as roughage to feed livestock.
In China
In 2017, China's total theoretical straw resources reached 1.02 billion tons, an increase of nearly 400 million tons compared with the early 1990s. Among them, the straws of corn, rice and wheat were 430,240,000,000,000,000,000,000,000,000,000,000 tons respectively, and the proportion of straw of the three major crops reached 83.3%. The amount of straw that can be collected in China is 840 million tons, and the utilized amount is about 700 million tons. The comprehensive utilization rate of straw (the ratio of utilized amount to the amount that can be collected) exceeds 83%. The utilization rates of fuel, base, and raw materials are 47.3%, 19.4%, 12.7%, 1.9%, and 2.3%, respectively, and a comprehensive utilization pattern of fertilizer and feed has been formed.