DB23/T 2506-2019 Technical regulations for the application of nitrogen fertilizer in full amount of rice straw returned to the field in white pulp soil (English Version)
Heilongjiang Provincial Standard of the People's Republic of China
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DB23/T 2506-2019
DB23/T 2506-2019 history
2019DB23/T 2506-2019 Technical regulations for the application of nitrogen fertilizer in full amount of rice straw returned to the field in white pulp soil