A newest technology makes "traditional kelp processing wastes turn into waste and make saline soil restoration into cotton fields" a reality. The reporter recently learned from Shanghai University of Technology that the latest technology developed by the team of Zhang Shuping of the school of sciences to efficiently extract fucopolysaccharides from fresh kelp and its application in the restoration of arid saline land has been promoted. The key problem.
Moisturizing and dryness, seaweed is a good product. However, seaweed chemical industry has risen since the 1960s. For more than half a century, there have been no major innovations in the production process. It generally uses dried kelp as the raw material. Its leading products are always low-grade iodine, gum, and alcohol. Since the implementation of Shanghai's "Extraction of Fucoidan Polysaccharides from Kelp's Iodine Waste Liquid" in 1994, Professor Zhang Shuping has been on the forefront of scientific research and production of seaweed chemicals and has been associated with kelp for 20 years. In the traditional process, the waste residue that accounts for about 2/3 of the weight of kelp is discarded, and the utilization rate of kelp is only 20%. According to the characteristics of fresh kelp chemical waste residue and the characteristics of saline-alkali land, Zhang Shuping discarded the discarded rock in traditional kelp processing Algae polysaccharides were transformed into usable “babiesâ€, and a new arid saline-alkali land remediation technology was developed—the key technology of seaweed-based soil conditioner, which realized almost 100% utilization of kelp and built an annual output of 220 tons of fucoid One production line for polysaccharide, 5,000 tons of seaweed feed and 1,000 tons of seaweed fertilizer each formed an industrial demonstration base.
With an annual output of 200 tons of fucoidan, 6,000 tons of seaweed feed and seaweed-based soil ecological remediation agent, the annual sales income is more than 100 million yuan, and the profit and tax is more than 28 million yuan. Due to major technological breakthroughs and applications in scientific research, on March 7, Zhang Shuping won the Nomination Award of the 8th "Shanghai Women's Innovation Award" and the title of "Shanghai March 8 Red Banner Pawn".
Inspired by the treatment of arid saline land in Israel, Zhang Shuping first extracted active substances from kelp chemical waste for green treatment and development of saline land. "Kombu water retention is four to five times its own weight. A series of marine bioactive substances are extracted from kelp's high water retention algae cells to make fertilizer, which can adjust the soil's pH, osmotic pressure, electrical conductivity, moisture retention and moisture retention. Sex and other micro-environments to promote plant growth. "Zhang Shuping said.
Bachu County, Kashgar, Xinjiang, which is supported by Shanghai counterparts, is a high-quality cotton base in China. However, due to drought and little rain, the area of ​​saline-alkali land accounts for 70% of the arable land in the county. , The grass does not grow. In 2011, with the support of relevant departments, Zhang Shuping will carry out the experiment of 2 national patented “Seaweed Fertilizer†technology on moderately saline cotton fields in Honghai Township, Bachu County. The results showed that the seedling emergence rate was more than 97%, 20% higher than that of the control group, the cotton yield per mu increased by more than 43 kg, and the farmers increased their income by more than 300 yuan.
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