"Farmers' smiles are my scientific research results" -Ti Cai Dongqing, a researcher at the School of Environmental Sciences and Engineering of Donghua University

■ Struggler is youth

"After growing up, we must do something, so that farmers are easier, more beautiful in rural areas, and high agricultural yields." Such a wish in childhood.

When he was in elementary school, it was often more than 5 o'clock in the morning. Cai Dongqing was awakened by his father and fertilized the crops. He was sleepy and irritable, and asked with reluctance: "Why do you need to fertilize frequently?"

"Fertilizer is like the" rice 'of the crops. "Eat a meal for only a month or two, otherwise the crops are' hungry ', and the food is less." After listening to my father's answer, the seeds of a dream were buried in the seeds of the dream. Cai Dongqing's heart: "If you can invented a fertilizer, let the crop 'eat' a tube for half a year."

When Cai Dongqing was studying graduate students, the seeds finally germinated.

Cai Dongqing said: "Once I finished eating crabs, I watched a lot of crab shells in the trash can. I thought it would be good if it could be used. So I started to test and found that the crab shell contains a large amount of shell polysaccharine, plus In the fertilizer, the loss of chemical fertilizer can be controlled, and the use of nutrient utilization and the period of efficiency can be improved. "

Cai Dongqing excitedly reported his discovery to the instructor Yu Zengliang. Under the guidance of the instructor, after thousands of tests, he finally developed the dream of controlling fertilizer, and the dream of "let the crops eat a" rice "for half a year" was finally realized.

After 3 years of unremitting struggle, the technology of losing fertilizer was transformed in 2007. Up to now, hundreds of enterprises have produced production, have accumulated more than 300 million acres, and created more than 30 billion yuan in direct economic benefits, accounting for about 25%of the national sustained -release fertilizer market, and reducing the amount of chemical fertilizers by 20%.

In order to promote the application, the team traveled more than 20 times a year to carry out technical demonstration and training with Ningxia Xiji, Haiyuan, Guyuan and other regions, and taught farmers to use technology in the fields.

"The effect of that 'face' is good. I have taken medicine once every 20 days, which is better than the effect of taking medicine once every 7 days. Thank you so much!" When testing at the potato breeding center of Ningxia Ningxin, Farmers said very excitedly when they saw Cai Dongqing.

Crab shells can control the loss of chemical fertilizers. Can they reduce the loss of pesticides and reduce the amount and number of pesticides?

Cai Dongqing still clearly remembers that when he was a child, his uncle who had just returned from the ground had a green face and trembling because of pesticide poisoning. At that time, Cai Dongqing thought that if there was a kind of pesticide, it was not afraid of the wind and rain, and the crops would be used to take medicine once a lifetime, so that the probability of farmers would be greatly reduced due to pesticide poisoning.

After a large number of explorations and experiments, Cai Dongqing and the team members used crab shells and nano -clay as raw materials to develop an active function nanomaterial, which not only significantly reduced the amount and number of pesticides, but also environmentally friendly. This technology has been industrialized in 2014. As of now, it has accumulated more than 50 million acres in China, which can reduce the amount of pesticides by more than 20%, save more than 5,000 tons of pesticides, and create more than 500 million yuan in direct economic benefits.

Cai Dongqing and the team also invented a "magic potion" -n 1 hour nanometer fast rotten agent, which can be changed in one hour with cow dung, which not only allows farmers to avoid multiple shovel and organic fertilizer of organic fertilizer. The hard work can also increase the production of crops by 10%-20%, providing effective technical support for livestock and poultry manure resources.

Whenever I see a happy smile on the farmers' faces, Cai Dongqing feels very fulfilling. He said: "The smile of farmers is my scientific research results." (Reporter Ren Chaoxia)

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