America is a big agricultural country in the world. What else do you know about American agriculture?

The United States is the most developed modern industrial country and the most developed modern agricultural country in the world. In the past 50 years, California has been the largest state in grain and agriculture in the United States; California's annual agricultural output value has reached more than 27 billion dollars, producing more than 350 kinds of crops and products, as well as many special products such as almonds, artichokes, dates, figs, kiwis, olives, persimmons, pistachios, prunes, raisins, clover and walnuts, all of which account for more than 99% of the total output in the United States. 20% of California's agricultural products are exported overseas. Agriculture is also one of the largest industries in the United States, with total assets of 1 1000 billion US dollars, accounting for about 70% of the total industrial assets. The annual agricultural output value accounts for about 16% of the total industrial and agricultural output value. The agricultural labor productivity in the United States is very high. Each farmer has an average of 450 mu of cultivated land, and the most can cultivate more than 2,000 mu. The average annual output value of each agricultural worker is 6-7. It can support 120 ~ 130 people. Compared with the 1970s, the yield per unit area of crops increased by about 60%, the number of broilers produced by 100 kg feed increased from 34 kg to 50 kg, and the number of eggs laid by a single chicken increased from 170 to 230 a year. It only takes 16 ~ 17 man-hours to produce and manage an acre of rice. The transformation and popularization of scientific and technological achievements are very fast. Taking precision agriculture as an example, it only took about five years for the whole country to be basically popularized. Now, precision agriculture has been implemented in 85% agricultural areas in the United States. The agricultural population in the United States accounts for 2% of the American population, about 4 million, and the population serving agricultural production accounts for 15% of the American population, including scientific research, popularization, education, production and operation of production equipment and means of production, and marketing. And become the strong backing of farmers. The federal government's annual investment in agricultural scientific research, extension and education is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. Its capital is $2 billion, with an average annual growth rate of 8%. A considerable part of these funds are directly allocated to universities. At the same time, rural junior high schools in the United States have agricultural education courses, and even kindergartens have set up some courses related to agriculture. (non-original)