The main agricultural products in Illinois include corn, soybeans, pigs, cattle, dairy products and wheat. Industrial products include machinery, food processing, electrical equipment, chemical products, publishing and printing, transportation equipment, oil refining and coal. This state is one of the major agricultural states in China. 80% of the land in this state is agricultural land. Each farmer cultivates an average of 140 hectares (about 2 100 mu) of farmland. Soybean production ranks first in the country; Corn yield sometimes ranks first and sometimes ranks second; The output of pork and beef is also among the best. Illinois is not only an agricultural state, its industry is more developed. From 65438 to 0999, the state's total output value was $446 billion, ranking fourth in the United States. The per capita annual income is $32259. Industry is mainly concentrated in Chicago. The main minerals are coal, petroleum, lead, zinc, limestone and glass sand. Coal production ranks fourth in China, and oil ranks eighth. In recent years, nuclear power plants have developed rapidly. Due to its proximity to iron ore producing areas and convenient transportation, the iron and steel industry in Illinois has developed rapidly. In recent years, Chicago has replaced Pittsburgh as the largest steel industry center in China. The machinery industry is developed. The output of agricultural machinery, construction machinery and metal products ranks first in each state; Motor output ranks third; The automobile industry is also very important, with 550,000 employees engaged in the manufacture and assembly of motor vehicles. The food industry is second only to California. The printing industry and publishing industry rank second in the country, second only to New York State. Manufacturing, agriculture and export trade play an important role in the American economy. The manufacturing industry is complete, mainly including steel, agricultural machinery, metalworking, electrical appliances, petrochemicals, oil refining and chemistry. , mainly distributed in downtown Chicago and East St. Louis. Coal and oil occupy a prominent position in the mining industry, accounting for about two-thirds of the state's mineral output value. Coal is mainly distributed in the central and southern parts of the state, and oil is distributed in the south. Other mineral resources include lead, zinc, limestone and glass sand. The farm land area accounts for about 4/5 of the state area, belonging to the corn belt. It is one of the major corn and soybean producing states in the United States, and the soybean and corn output ranks first in the country. The cheese production in northern Illinois accounts for 40% of the country, and the pork production in livestock products is second only to Iowa, mainly distributed in the central and northwest. Beef and mutton also ranks first in the country, mainly distributed in the south.