Expert diagnosis and treatment: Prescribe "Chinese medicine prescription" for saline-alkali land

　　【In spring ploughing season, we are in action⑧】

　　Guangming Daily reporter Wu Lin Guangming Daily correspondent Wang Chunyan

　　"How to treat saline-alkali land? Some use medicine to control alkali, some use fertilizer to adjust alkali, we use halophilic bacteria to 'eat salt' through traditional Chinese medicine microecological technology." Wang Daqing is a business manager of a biotechnology company in Liaoning.

Last year, in Honggangzi Township, Da'an City, Jilin Province, they carried out 5 mu of saline-alkali land for treatment experiments, and restored the original alkaline black calcium soil.

　　Can "eating salt" be effective?

No, it's less than a month before the rice seedlings are raised, and Dalian native Wang Daqing arrived in Da'an again: "The experimental report in the first year of governance showed that the rice yield increased by 20%, and we will continue the experiment this year. Our goal is to use the Saline-alkali bio-organic fertilizer, large-scale restoration of saline-alkali land."

　　The land doctor who "prescribes medicine" for saline-alkali land is named Wang Songlin. He studied under Professor Kang Bai, one of the founders of microecology in my country, at Dalian Medical University. It can solve the problems of soil compaction, acidification and salinization, and also solve the problem of antibiotic residues in the aquaculture industry and the problem of chemical pesticide residues in the planting industry.”

　　"It was originally a dead horse to be a living horse doctor, but I didn't expect that the seedlings would not die." This spring, in Donggang City, Dandong City, Liaoning Province, 800 kilometers south of Da'an, Guo Liang ushered in hope.

　　More than 4 months ago, Guo Liang's strawberry shed was almost abandoned - because the heavy metals in the soil exceeded the standard, and pests and diseases were rampant, many technicians were found, and they tried their best, and finally they shook their heads and returned.

　　"Later Brother Bao came and said to try Chinese medicine. I said whatever medicine it is, let's get it done!" Guo Liang was about to give up the shantytown, but he was not reconciled.

　　This time, the "traditional Chinese medicine" brought by senior agronomist Liu Baoyu is the traditional Chinese medicine microecological bacterial agent developed by Wang Songlin.

It didn't take long for the ground to change...

　　"Look, this leaf is shiny and shiny, doesn't it look good? Let's look at this fruit, the second crop, how beautiful it is!" Guo Liang was overjoyed, "Not only has the disease and insect pest been resolved, but the strawberry has a big color. High yields."

　　What surprised Guo Liang even more was that the quality of strawberries met the EU testing standards, with 263 test results of zero pesticide residues and zero heavy metals, and strawberries were directly supplied to the Beijing Winter Olympics.

Guo Liang calculated that the profit this spring would reach more than 6 million yuan.

　　Technological innovation "fuels" arable land, and this technology also takes root.

Last year, the "Dagong-Xigang Science and Technology Innovation Industrial Park" jointly built by the Dalian Xigang District Government and the Dalian University of Technology Political School incorporated this technology, and actively connected with university research teams to form industry-university-research cooperation.

　　"At present, the key research and development projects for the prevention and control of agricultural land pollution include common key issues such as black soil cultivated land quality monitoring, evaluation and early warning technology, cultivated land degradation control and conservation technology, and heavy metal pollution prevention and restoration in agricultural production areas." Dalian University of Technology School of Environment Associate Professor Qiao Xianliang, Ph.D. of Soil Science at the Institute of Soil Science, Chinese Academy of Sciences, said that these key research contents can effectively support the pollution prevention and control of agricultural land and promote the construction of high-standard farmland.

　　"Guangming Daily" (Edition 01 on March 26, 2022)