China News Service, Yancheng, October 18 (Reporter Yu Congwen) If you hadn't seen it with your own eyes, it would be hard to imagine that the single-season rice grown on the abandoned salt pans in the past had a maximum yield of nearly 1,000 kilograms per mu.
On the afternoon of the 17th, in the abandoned salt field of Sheyang Saltworks in Jiangsu Province, the reporter witnessed the on-site production acceptance and identification process of two "abandoned salt field ton-grain rice experimental fields". After harvesting, weighing, measuring, and verifying, the two The highest rice yield per mu in heavy salt fields is 852.3 kg.
The golden rice and the big windmill in the distance constitute a beautiful picture.
Photo by Yu Congwen
On the 17th, after a few days of autumn rain, the salt farms in Sheyang, Jiangsu, no longer saw the old salt pans. Under the blue sky, large tracts of rice fields and fish ponds on the water surface with photovoltaic panels alternated with rows of wind. The windmills for generating electricity form the most beautiful picture in autumn.
The two "abandoned salt field ton-grain rice experimental fields" in the second field of Sheyang Shuntai in Yancheng are in this harvest picture. The yellow rice ears are looming or appearing among the green rice leaves, and several harvesters are parked by the ridge. Agricultural technicians are doing preparations for harvesting.
A few years ago, Yancheng Teachers College, Jiangsu Provincial Salt Soil Biological Resources Research Key Laboratory and Jiangsu Tidal Flat Biology and Agriculture Collaborative Innovation Center Distinguished Professor Mao Xundong took several Ph.Ds and masters here to experiment "Abandoned salt pan heavy saline soil rapid and efficient reclamation technology And model innovation" research topic.
He told reporters that these two fields are the location of the “Salt Mountain” where salt was piled up in the past. The salt content here is much higher than that of other plots. The reason for choosing here is to experiment with high-efficiency cultivation techniques in heavy salt plots. Produce high-yield rice.
Technicians measure the water content of rice.
Photo by Yu Congwen
It is understood that the abandoned salt field soil of Shuntai Farm has an average salt content of 4.37‰, with the highest salt content exceeding 10‰, and the growth of rice must control the soil salt content below 2‰.
At the beginning of this land reclamation, audacious farmers tried to plant rice, with a yield of less than 50 jin per mu. Later, no one came to plant it without contracting rent.
In order to plant high-yield rice on heavy salt fields, Mao Xundong’s team lays a solid foundation for water source protection, irrigation and drainage facilities, land leveling, and smooth electrical channels, and adopts the "5N fast and efficient salt discharge method" of ploughing, drying, soaking, spinning, and draining. , Implement 6 supporting technologies of deep loosening, frequent irrigation, multi-rotation, improved seed, close planting, and foot fertilizer, and conduct expert consultations on the prevention and control of rice diseases, pests and weeds, so that measures can be adjusted according to the location, seedlings, insects, and grass conditions in a timely manner. Formulate and revise medication plans and prevention methods.
In 2017, the experimental plot was improved to produce 1243.5 kg of rice and wheat in the two crops that year, with the highest rice yield per mu of 659.6 kg.
In 2018, the highest rice yield per mu reached 737.5 kg.
Theoretical test result card of ton-grain rice in abandoned salt fields.
Photo by Yu Congwen
"After rapid and efficient cultivation technology and model innovation, it is completely possible to grow high-yield rice on heavy salt fields." Mao Xundong said that in the preliminary theoretical production test organized in September this year, the two abandoned salt fields had theoretical acres. The yields were 1032.01 kg and 1103.25 kg respectively, both exceeding 1,000 kg.
Harvesting started at 1 p.m. and saw several harvesters shuttle back and forth in the field. The mature rice paddy turned into golden rice grains under the harvester. The truck stopped on the ridge and then drove the rice to the grain field for weighing. The personnel measured and calculated the moisture content of the rice. After being identified by the expert group of identification experts led by Professor Dai Qigen of the Agricultural College of Yangzhou University, the highest yield of rice per mu in the two heavy salt fields reached 852.3 kg.
It is understood that this has created a new record for direct seeding of rice per mu with heavy saline soil machinery in abandoned salt fields.
The harvester shuttles back and forth in the field, and the mature rice is turned into golden rice grains under the harvester.
Photo by Yu Congwen
Mao Xundong, the team leader, is very satisfied with this result. He said that the two experimental fields are direct seedlings, without seedlings raised or planted. It would be better and more stable if seedlings were transplanted by machine.
Now it has the technical reserves to grow high-yield grains in heavy salt fields.
It is reported that the project is jointly responsible for the Jiangsu Tidal Flat Biological Agriculture Collaborative Innovation Center of Yancheng Normal University, Jiangsu Shuntai Farm Co., Ltd., and Nanjing Beishengrong Energy Technology Co., Ltd.
On the same day, the actual rice production test was presided over by the Yancheng Science and Technology Bureau. An expert appraisal team composed of Professor Dai Qigen from the Agricultural College of Yangzhou University, and rice planting experts from the Yancheng Agriculture and Rural Bureau and the Yancheng Academy of Agricultural Sciences participated in the acceptance appraisal.
The expert group believes that the technical system is advanced and practical, and has important promotion value for increasing the yield of rice in a large area of saline-alkali land.
“Our large-scale experiment was very successful this year. This has given us continuous improvement of technology and continuous improvement of production confidence.” Tang Boping, Dean of Yancheng Normal University Wetland School, who led the implementation of the project, said that they will accelerate the development of saline-alkali rice cultivation in the future. Use the process to increase the reserve of reserve arable land resources, so that the saline-alkali land can produce more and better food, and make a greater contribution to national food security.
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