Historically, my country has always promoted social development by "agriculture supporting industry". As the foundation of the national economy, agriculture has accumulated basic capital for early industrialization and provided a large amount of labor, which is an important reason for the start of industrialization in the early stage.

However, with the accelerated advancement of industrialization and urbanization, the gap between urban and rural areas has gradually widened. In order to achieve sustainable economic and social development, China has proposed the strategic idea of "industry feeding back agriculture", that is, using industry to promote agricultural modernization, promote the comprehensive development of rural economy and society, and narrow the urban-rural gap.

Renewable biomass gas is the fourth energy revolution, which has brought about a huge change in industrial production. As a clean and efficient energy conversion device, biomass gasifier plays a vital role in the general environment of "industry feeding back agriculture". It uses biomass as fuel, which is renewable, low-carbon, and rich in resources. After the biomass raw materials are processed, they are sent to the biomass gasifier for gasification and cracking under the two basic conditions of a certain temperature and oxygen isolation. With the help of a certain amount of air (or oxygen) and water vapor, the biomass cellulose, hemicellulose and lignin undergo drying, pyrolysis, reduction, and oxidation reactions to obtain components containing CO, H2, CH4, CO2, etc. and purify them to obtain clean gas. This conversion process is efficient and environmentally friendly, and has a wide range of applications. It can be applied to various fields of agriculture and industrial production, such as power generation, gas supply, heating (alternative to biomass combustion), etc. It not only provides energy for industrial production, but also promotes the development of agriculture to a certain extent. It not only promotes the utilization of agricultural waste resources, but also promotes the economic development and ecological environment protection in rural areas, and realizes the effective transfer and application of industrial technology to agriculture.

The wide application of biomass gasifiers has indeed brought unprecedented development opportunities to agriculture, especially when we focus on the role of reed bamboo as biomass fuel, its advantages are more significant. As one of the biomass fuels, the planting and utilization of reed bamboo has shown stronger comprehensive benefits in multiple dimensions, which can be discussed from the following perspectives:

① Output value:

Reed bamboo: The per-acre yield of reed bamboo is relatively high. According to research, under suitable conditions, the biomass yield of reed bamboo can reach more than 10 tons/hectare in the first year, and the dry matter yield can reach 20 to 40 tons/hectare per year from the second year, or even higher.

Traditional crops: The output value of traditional crops is lower than that of reed bamboo. For example, the biomass yield of corn is usually between 10 and 15 tons/hectare (dry matter), wheat is about 6 to 10 tons/hectare, and rice is between 8 and 12 tons/hectare.

These figures show that the biomass yield of reed bamboo far exceeds that of traditional crops.

② Planting cost:

Reed bamboo: Taking the planting situation in a certain area of China as an example, the planting cost per hectare of reed bamboo (including seedlings, land preparation, fertilizer, irrigation and harvesting) is about RMB 5,000 to RMB 10,000.

Traditional crops: For corn, wheat, and rice, the planting cost per hectare (including seeds, fertilizers, pesticides, irrigation, arable land, harvesting, etc.) may be as high as RMB 6,000 to 12,000.

Apart from the difference in planting costs, once the reed bamboo is successfully planted, it can be harvested for many years without replanting, which greatly saves the cost of re-sowing and seedling raising. Due to its strong drought resistance and resistance to pests and diseases, it reduces the use of pesticides and fertilizers, further reducing production costs.

③ Planting conditions:

Reed bamboo: Reed bamboo has a wide range of adaptability and can grow in a variety of soil types. It can take root in poor land, has relatively low requirements for soil fertility, and can tolerate saline-alkali land environments, which many crops cannot do; and reed bamboo has a certain drought tolerance. In some areas with relatively little precipitation, it can maintain growth to a certain extent by relying on its own physiological regulation mechanism. It can even grow in some special soil environments such as tidal flats and degraded land that are not conducive to the growth of ordinary crops.

At the same time, Phragmites australis also has good waterlogging resistance. In an environment with more water, such as around wetlands or areas that are occasionally flooded, it can adapt through its own structure and physiological characteristics to avoid death due to flooding; Phragmites australis has a wide range of adaptability to temperature. It can grow rapidly in warmer climates and can also tolerate a certain degree of low temperature. It can be widely planted in some subtropical and temperate regions. Even in low winter temperatures, as long as it is not extremely cold, the underground part of Phragmites australis can still survive and continue to grow in the spring of the following year.

Traditional crops: For most food crops, different food crops have strict requirements for water. For example, rice needs to maintain a certain water layer in each growth period. Water shortage will seriously affect its growth and yield. Although corn is relatively drought-resistant, it will also lead to a decrease in yield if it is not properly irrigated during droughts. At the same time, traditional crops must grow normally in suitable temperatures. For example, winter wheat needs to go through a certain period of low-temperature vernalization before it can normally head and flower. If the winter temperature is too high or too low, it is not conducive to its growth and development. In addition, most crops require sufficient light, and different crops have different requirements for light intensity and light time.

From the above comparison, it can be seen that whether it is planting cost, output value or planting conditions, planting reed can drive agricultural economic development more than planting grain in some aspects. This also further illustrates that in the process of "industry feeding agriculture", the application of biomass gasifiers and biomass fuels provides new ideas and ways for agricultural development.

"Industry feeding back agriculture" is a systematic project. Through the promotion and application of biomass gasifiers and the rational use of biomass fuels, it can promote the sustainable development of agriculture, improve the economic and ecological benefits of agriculture, and achieve the coordinated development of agriculture and industry.