The Chinese Academy of Sciences will help the Bohai Rim to increase grain production by 10 billion jin in the next five years.

Shijiazhuang, May 27th (Reporter Gao Bo) according to Dr. Liu Xiaojing, director of Nanpi Station of the Chinese Academy of Sciences, through the implementation of the national major science and technology support plan "Bohai Granary Science and Technology demonstration Project" demonstration area construction, we will greatly enhance the grain production capacity of the medium-and low-yield fields around the Bohai Sea, and strive to achieve the goal of increasing grain production by 6 billion jin by 2017 and 10 billion jin by 2020.

Liu Xiaojing said: at present, it is very difficult to achieve a substantial increase in grain production in areas with high grain production, but Hebei, Shandong, Liaoning, Tianjin, and other places around the Bohai Sea have 40 million mu of medium-and low-yield fields and 10 million mu of saline-alkali wasteland. If the problems of lack of fresh water resources and poor soil in these places can be solved, the huge potential for increasing grain production will be brought into full play.

Over the past 30 years, the Chinese Academy of Sciences has set up an agricultural experimental station in Hebei Province to help Nanpi County in Hebei Province transform medium-and low-yield fields and greatly increase the grain output of saline-alkali land.

"I never dreamed that the wheat yield in this saline land could reach 1000 jin. In the past, it was good to be able to produce 500 jin per mu of land. People used to worry about what grain to eat in the coming year." Bai Shuchen, a villager of Bai Fangzi Village, Nanpi County, Cangzhou City, Hebei Province, said.

Bai Shuchen's hometown, Nanpi County, is located on the coast of the Bohai Sea. Since ancient times, the soil is barren, the fresh water resources are scarce, and the grain yield is low. There has been a song like "White in spring, watery in summer, no harvest for ten years and nine years, and half a year's grain for bran vegetables".

Bai Puqing, a branch of Bai Fangzi Village, told reporters that the increase in wheat yield per unit area was mainly due to the establishment of the Nanpi Ecological Agriculture Experimental Station of the Chinese Academy of Sciences and the support of the demonstration area of the "Bohai Granary Science and Technology demonstration Project." villagers changed to winter wheat varieties "Xiaoyan 60" and "Xiaoyan 81" of the Chinese Academy of Sciences, coupled with the use of brackish water irrigation and other new technologies, making the once saline-alkali land into a high-yield field.

The Nanpi Station of the Chinese Academy of Sciences was established in 1986 on the basis of undertaking the national task of tackling the key problems of medium-and low-yield fields in the Huang-Huai-Hai Plain. In April 2013, Nanpi Station began to undertake the project of "Bohai Granary Science and Technology demonstration Project". The project was proposed by Academician Li Zhensheng, the winner of the highest national science and technology award, on the basis of the research on increasing grain production in the middle-and low-yield fields around the Bohai Sea, and was implemented by the Chinese Academy of Sciences and the Ministry of Science and Technology in Hebei, Shandong, Liaoning and Tianjin.

In the past 30 years since the establishment of Nanpi Station, researchers have carried out scientific research on soil, fertilizer, water, species and other aspects on this barren land by tackling the two difficult problems of water shortage and land salinity for a long time. A series of technologies such as brackish water mixed irrigation technology, winter salt water icing irrigation improvement technology and rapid improvement of soil fertility have been developed, which have provided a solid foundation for the "Bohai granary" project.

"the per unit grain yield of medium-and low-yield fields in Nanpi County has increased from an average of 300 jin per mu in 1985 to an average of 800 jin per mu." Liu Xiaojing said that the breeding of salt-tolerant wheat and corn varieties was also a key reason for grain production. For example, Xiaoyan 81 was planted in moderately and mildly saline-alkali land, with an average yield of more than 900jin per mu, with a maximum yield of more than 1000 jin, doubling it. The HN866 maize combination selected by Nanpi Station produced a yield of 1125 jin per mu in 2013, an increase of 15.7% over the traditional variety.

Since the implementation of the "Bohai granary" project, it has increased grain production in more than 5 million mu of fields in Hebei, Shandong, Liaoning and Tianjin.