Science & Tech · Science & Environment · 5 hrs ago

China promotes lower-carbon practices from farms to dining tables

China promotes lower-carbon practices from farms to dining tables

China is promoting lower-carbon grain production from farms to dining tables, with measures at four stages: soil care, field production, storage and eating.

The effort addresses strained farmland, where years of intensive cultivation and heavy use of fertilisers and pesticides have harmed soil, especially in areas with low yields.

In northern dryland areas, a combined approach using smarter fertiliser systems, organic manure and living microbes has cut fertiliser use by about 9% in one measure, and the approach has spread across 2.78 million mu in several provinces.

In rice fields in northeast China, crabs and crayfish help control weeds and pests, while crop straw feeds cattle and cattle manure returns to fields as fertiliser.

This recycling can reduce fertiliser use in rice fields by 20% and pesticide use by more than 70%, according to estimates cited in the programme.

New grain stores use airtight, nitrogen-rich conditions to limit pests and mould without repeated chemical treatment; storage losses across storage, transport and processing average about 2% of annual grain output.

At a university dining hall, serving food by portion has cut kitchen waste by a third, and China’s food-waste law has been in force since 2021; the wider goal is to save resources and emissions across the grain supply chain.

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梅旭荣Researcher at the Chinese Academy of Agricultural Sciences
We integrate soil technology, fertilizer technology and biological microbial-agent technology.
via China News Service
张君Researcher at the Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences
First, we developed a smart fertilization system, reducing fertilizer use by about 9%; second, we adopted organic fertilizer to replace chemical fertilizer, at a replacement rate of about 20%; third, we use live microbial agents on site, fermenting them and applying them directly through drip irrigation.
via China News Service
张岩Member of a saline-alkali land management project team at the Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences
Our preliminary conclusions from long-term monitoring are that reducing chemical fertilizer, replacing it with organic fertilizer, and raising crabs and shrimp in rice paddies can reduce greenhouse gas emissions from rice paddies while increasing soil organic matter.
via China News Service
孙其信Member of the Chinese Academy of Engineering
The major change in adopting green, circular agriculture is that things once seen as waste are turned into resources through reuse and returned to the agricultural cycle.
via China News Service