This year, reached the suburbs of Shanghai, the use of organic fertilizers, 90,000 tons of volume support, the application of the range of 103 villages and towns in Shanghai, 50 million mu of rice fields, 10 mu of vegetable land. Last year the city to promote the use of organic fertilizers only 1.5 million tons in the goal area of 10 mu.
"Prior to use less." Director of the Shanghai Agricultural Technology Promotion Center, said Ernst, "only on cash crops, the farmers have a small amount of spontaneous use." Last year in Shanghai, began to carry out pilot projects for organic fertilizer to promote this year's crop of large area. Ernest Said that next year the city want to promote the use of organic fertilizer 120,000 tons, of which 60 mu of paddy fields, vegetable gardens of 20 hectares.
The use of organic fertilizers on soil fertility, improving the quality of agricultural products, Reduce Agricultural Non-point sources has a positive role. In Shanghai, which is like the development of circular economy seen, increasing agricultural productivity is an important tool. Earlier this year Shanghai has developed strategies to promote organic fertilizer subsidies? Farmers use per 1 ton of organic fertilizer receive 250 yuan of special promotions. Contribution of organic manure per guidance prices of 150 yuan subsidy of 62.5%. Alone, this city was 22.5 million yuan invested funds.
The use of organic fertilizer is not new. 19th Century had, all plant fertilizer organic fertilizer. Ming and Qing dynasties Farmers pig manure is used as the main source of manure produced one of the Shanghai region. Qing dynasty, 14 years (1834) "Agricultural Advisory Pu Stillwater"
Written by "more than the pig in the pig farm shed where m is therefore the task of dignity does not interfere with practice field pork fat gain, infinite."
Information when it calculates fertilizer ingredient: 1950, from Shanghai, the use of chemical fertilizers suburb only 3% of the total fertilizer, organic fertilizer accounts for 97%. 80s of last century, due to a large rural labor transfer to the city and business community, whether product, transportation of manure, the labor shortage is so that the use of organic fertilizer ratio of the way down to 1988, eight 92nd More importantly, from the perspective of environmental protection, Farmers Before Their Own "Compost" fermented manure spreading on fields, in fact, some eggs, and not die, they open fields and the flow of matter "secondary pollution."
Now, after detoxification of commercial organic fertilizer, granular or powder form in water, nutrients, organic matter and sanitation facilities have a certain standard, not only stinking smell of burning is not Will not Miao, then animal pathogens killed, the ground gradually improve quality . According to statistics, Shanghai, in the current annual capacity of 40 tons of organic fertilizer with Producers The annual production of 300,000 tons of organic fertilizer. This is equivalent to treat them with straw, manure over 1 million tons. It is reported that over the next three years, Shanghai will be a series of organic manure is building data centers, essentially all of the fresh pig slurry to reach the level of processing.
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