Group 1 - The fourth Yangtze River Delta Agricultural and Rural Ecological Green Low-Carbon Development Academic Seminar was held in Rugao, showcasing new technologies for straw returning and soil quality improvement [1] - The province produces approximately 40 million tons of straw annually, with straw returning technology having been promoted for 13 years, facing challenges such as slow decomposition and pest issues [1] - New technologies presented include flame deactivation technology, which can quickly deactivate surface microorganisms on straw, leading to a yield increase of 65 kilograms per mu for rice when combined with biological agents [1] Group 2 - The provincial agricultural research team's microbial synergistic degradation technology has significantly increased straw degradation rates, while deep plowing returning technology reduces greenhouse gas emissions and enhances soil organic matter [2] - The team has innovatively proposed deep plowing to a depth of 20-25 centimeters, promoting microbial activity and accelerating the conversion of straw carbon to soil organic carbon [2] - In demonstration bases in Rugao, deep plowing has resulted in a yield increase of 600 jin per mu, with a 46% improvement in seedling emergence rates compared to conventional tillage [2] - These technologies have been promoted across various types of problematic soils in Jiangsu, improving soil quality by 0.5 to 1 grade [2]