● Water and fertilizer absorption and use efficiency traits as well as the related agronomic practice in the mega rice cropping area

● The interaction mechanism of crop, microbial and soil in paddy ecosystem, and its ecological regulation pathway

● The crop management optimization for the environmental-friend rice production based on different cropping systems

● To establish and perfect the theory and technology system for high fertilizer use efficiency in paddy field

● To integrate and innovate the agronomic practice with low-carbon and high efficiency

● To construct the sustainable rice high yield cropping system and soil fertilization technology