Application of dry land direct seeding technology in the United States?

Some commercial grain farms in the southern United States use dry land direct seeding technology to grow rice, which avoids paddy field cultivation, seedling raising and transplanting, and its production technology is not much different from that of planting wheat. Drain the field before sowing. In 1950s, direct seeding of rice was widely spread in the north of China, accounting for 70% before 1960s in Heilongjiang province, and was also used in the south in 1960s. In recent years, with the development of economy, a large number of rural young and middle-aged laborers have entered the urban labor market, the rural labor force has decreased, chemical herbicides have been widely used, and direct seeding rice cultivation has shown a rapid development trend.

Recently, the agricultural machinery department of Yizheng City, Jiangsu Province successfully demonstrated a new rice transplanting technology-mechanized dry land direct seeding of rice in Puxi Town. Compared with the traditional rice transplanting method, this technology saves the link of rice seedling raising and sowing, and the rice seeds are directly sown with a drill after soaking and germination, which has the advantages of saving labor, saving cost and increasing efficiency. According to estimates, a drill can sow 30 mu per day, saving about 200 yuan per mu compared with traditional planting methods. The city is going to try it out this year and promote it on a large scale next year.

Some people may think that direct seeding of rice is a new technology developed in recent years, but I don't know that direct seeding of rice has existed since ancient times, even before transplanting, that is, direct seeding first and then transplanting. American rural areas are vast and sparsely populated, with large production scale and high level of mechanization of agricultural production, which is very suitable for direct seeding on dry land. Direct seeding in dry land is beneficial to improve labor productivity, but the yield per unit area is low. China has a large population and a small land, and the contradiction between people and land is prominent. The traditional rice planting method of intensive cultivation should be adopted. Although the traditional rice planting method of intensive cultivation has invested more manpower, it has high yield per unit area, which is conducive to alleviating the contradiction between man and land. Rice planting is distributed in the lower reaches of Mississippi River in the United States, and it is said that dry land direct seeding technology is adopted.