Energy assessment of different rice –wheat rotation systems

This study evaluated the energy balance of three rice –wheat rotation systems. Dry direct‐seeded rice–wheat rotation has the highest energy production efficiency. Renewable energy still has a lot of application space in agricultural production. AbstractFood and energy security are important issues that threaten human survival and development. The rice –wheat rotation system provides a stable source of food for more than 20% of the world's population, but there have been no reports on the energy balance of different rice–wheat rotation systems. This study evaluates the energy inputs and outputs of three rice–wheat rotation systems and their energy production efficiency through the study of dry direct‐seeded, wet direct‐seeded, and transplanted rice–wheat rotation systems. The results of the study showed that the average total energy inputs in the dry direct‐seeded, wet direct‐seeded, and transplanted rice–wheat rotation sys tems were 58,677, 74,083, and 69,022 MJ ha−1, respectively. The production resources with more energy input in rice –wheat rotation system were all related to water and fertilizer. The energy input in the rice season accounts for more than 50.69% of the total energy input in the rice–wheat rotation system. At the same time, rice–wheat rotation production is highly dependent on nonrenewable energy. Among the three rice–wheat rotation systems, the transplanted rice–wheat rotation system had the highest total energy output...
Source: Food and Energy Security - Category: Food Science Authors: Tags: ORIGINAL RESEARCH Source Type: research