One of the global sources of greenhouse gases such as methane and nitrous oxide is paddy fields, and CH4 emissions from flooded paddy fields account for 5% to 19% of global emissions. This is the focus of GHG emission reduction research. The N2O emissions from paddy fields mainly occur in the dry season, and their emissions account for 25%~35 of the country's total farmland emissions. During the growth period of paddy rice, N2O emissions will be significantly promoted. The rice-wheat rotation system in East China is the most typical agricultural planting method in China. Therefore, how to effectively reduce greenhouse gas emissions in the wheat rotation system has become a research hotspot in the current climate change. Soil nutrient determination can be measured using a soil nutrient tester to provide data for the study.
Biochar is a type of solid material with developed pore structure, high carbon content, and large specific surface area generated by biomass pyrolysis and carbonization under anaerobic or anoxic conditions. It has high stability and strong adsorption performance. Studies have shown that biochar can not only provide nutrients such as nitrogen, phosphorus, potassium, calcium, magnesium, etc. needed for crop growth, but also increase soil carbon stocks, nutrient cycling and retention, and increase crop yields. The soil nutrient tester found that biochar can inhibit CH4 emissions from paddy soil; biochar can reduce N2O emissions from rice fields and increase CH4 emissions; and biochar can promote crop growth and increase crop yield. Therefore, the application of biochar in agriculture has attracted increasing attention and has gradually become a new way for agricultural production and carbon reduction.
The study of soil nutrient tester's comprehensive crop yield and greenhouse effect greenhouse gas intensity has become the research trend and research hotspot for comprehensive assessment of farmland management measures. The application of biochar in the water environment with different water conditions can also reduce the comprehensive greenhouse effect and greenhouse gas intensity compared with the dry land.
Biochar is a type of solid material with developed pore structure, high carbon content, and large specific surface area generated by biomass pyrolysis and carbonization under anaerobic or anoxic conditions. It has high stability and strong adsorption performance. Studies have shown that biochar can not only provide nutrients such as nitrogen, phosphorus, potassium, calcium, magnesium, etc. needed for crop growth, but also increase soil carbon stocks, nutrient cycling and retention, and increase crop yields. The soil nutrient tester found that biochar can inhibit CH4 emissions from paddy soil; biochar can reduce N2O emissions from rice fields and increase CH4 emissions; and biochar can promote crop growth and increase crop yield. Therefore, the application of biochar in agriculture has attracted increasing attention and has gradually become a new way for agricultural production and carbon reduction.
The study of soil nutrient tester's comprehensive crop yield and greenhouse effect greenhouse gas intensity has become the research trend and research hotspot for comprehensive assessment of farmland management measures. The application of biochar in the water environment with different water conditions can also reduce the comprehensive greenhouse effect and greenhouse gas intensity compared with the dry land.
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