700,000 mu rice in Qing 'an adopted water-saving and high-yield technology of drought cultivation control irrigation in cold region

The water-saving and high-yield technology of controlled irrigation of dry-cultivated rice in cold region was successfully tested in Qing'an. This year, 700000 mu of rice in this county will popularize this technology. According to the estimation of experts, about 450 cubic meters of water is saved per mu, the pumping cost is saved by 11.2 yuan, and the average increase is 22 kg per mu.

In recent years, by carrying out the trinity method of "engineering water saving, mechanism water saving, and technical water saving," Qing'an has reduced the use of water for irrigation from nearly 1,000 cubic meters to 500 cubic meters per mu, and increased the area of paddy fields from 640000 mu to 1.17 million mu in 10 years, accounting for half of the arable land area. last year, rice alone increased the income of each farmer by nearly 1,000 yuan.

The water-saving and high-yield technology of controlled irrigation for upland rice in cold regions is a new technology certified and popularized by Nanjing Hehai University. It has been successfully popularized in many provinces and regions of Ningxia and Hainan, and Qingan is the first to popularize this technology in three northeastern provinces. In 2002, after Qingan County learned about this technology, in view of the characteristics of large paddy field area and serious water thirst in the county, this technology was introduced and tested and demonstrated in some typical farmers, and under the guidance of Peng Shizhang, a professor at Hehai University, according to the local characteristics, the technology was improved to make it more suitable for the northern characteristics. The essentials of this technology summed up in this county are as follows: "when the land is moist, the dew mud is not watery; when the water layer is built at the beginning of tillering, the water layer is not exposed; after tillering, the ground cracks are re-controlled; rainfall is skillfully utilized, and water conservation and control; yellow ripening to prevent premature senility, and a crop of water to be irrigated." In the specific operation, we should focus on six links: returning to green stage, tillering stage, jointing and booting stage, heading and flowering stage, filling stage and yellow ripening stage. In Fengyu Village, Fengshou Township, there are two cars pulling rice seeds in front of Zhou Wuyi's house at a price of 3 yuan per kilogram. Zhou Wuyi said that he planted 10 hectares of rice this year, all of which used water-saving and high-yield techniques of throwing seedlings and controlled irrigation. In the past, the problem of throwing seedlings and raising seedlings was not easy to solve. Since 2003, when the technology of water-saving and high-yield of controlled irrigation was applied, the problem of rice seedlings falling has been solved. He calculated for us that a hectare of rice saved 200 yuan in pumping costs, 640 yuan in man-hour costs in throwing seedlings than in transplanting seedlings, and 140 yuan in medication. The two techniques of throwing seedlings plus controlled irrigation increased production by 2500 kilograms per hectare, increased income by 4000 yuan, and finally saved costs and increased income by 4980 yuan per hectare. In order to ensure that farmers accurately popularize this technology, the county hired technical experts inside and outside the province, organized technicians to compile guidance materials, and held training courses on controlled irrigation techniques to deliver the technology to farmers.

"Rice doesn't have to be soaked in water. Without a clear water layer, rice can still grow well." Qing'an farmers, who have learned the technology of rice water-saving irrigation, have finally changed the traditional concept of deep-water irrigation for rice in the face of facts.