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Rice production systems in South and East Asia are subjected to increasing risk of heat stress with climate change. However the impacts mechanisms of heat stress on rice growth and grain formation, model simulations, heat stress risk, as well as adaptation options are poorly understood. This project, together with IRRI and China National Rice Research Institute, is targeted to understand the impacts mechanisms of heat stress, and develop climate resilient and sustainable rice systems for double rice in the middle and lower reaches of Yangtze River. To this end, focusing the double-rice rotation cropping system in the middle and lower reaches of Yangtze River, firstly we will conduct controlled-environment experiments using the well-equipped experiment facilities in China National Rice Research Institute to investigate the impacts mechanisms of heat stress on rice growth and grain formation. Then, based on the experimental data, we will improve the rice simulation model, MCWLA-Rice, to better simulate the impacts of heat stress on rice growth and grain formation. Next, we will assess the risk of rice production, as well as the use efficiency of climate resource, water and nitrogen, under future climate change. Finally, by optimizing the interactions between genotype, environments and agronomic management through simulation experiments, we will develop climate resilient and sustainable rice cropping system with heat stress resilience, high yielding, and high use efficiency of climate resource, water and nitrogen. The rice cropping system will take advantage of improved climate resources, while avoid the harmful impacts from extreme temperature simultaneously.
- Start From: 2016 - 01
- End By: 2020 - 12
- Sponsored By: Institute of Geographic Sciences and Natural Resources Research, CAS