The calorific value of fuel rods produced from crop straw and sawdust is different. Generally speaking, the calorific value of carbonized straw fuel rods is 1/4 less than that of sawdust fuel rods. Therefore, straw fuel rods are not suitable for further carbonization. But it is a substitute for fuelwood and coal. It is suitable for heating, hot water boiler, greenhouse heating, or ordinary life fuel.