Chinese researchers have successfully applied single-dose fertilization in mechanized rice planting to reduce nitrogen cost. The current fertilization is realized by spreading fertilizers over
the fields, causing a large amount of fertilizer loss and rice field
pollution. Researchers from the Nanjing Agricultural University adjusted the
ratio of slow-release fertilizer and controlled-release fertilizer.
Instead of fertilizing the traditional four to five times, now they only
need to fertilize once, and the nutrient release from the fertilizers
is synchronized with the peak period of rice fertilizer uptake. Using the new fertilization method, the fertilizer bags are thrown
into the soil during rice planting to provide all the nutrition during
the total growth cycle of rice. Provinces including Jiangsu, Zhejiang, Anhui and Heilongjiang have
applied the new fertilization method to grow rice. Compared with
previous methods, the one-time fertilization can save 20 percent of
nitrogen fertilizer for machine-planted rice.
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