The non-wood fiber materials have the following advantages as pulp and papermaking raw material : (1) it is the fast annual growing fiber resource, and it has smaller content of lignin than wood (2) non-wood pulp can be produced at low temperatures with lower dosage of chemicals (3) a smaller factory can be feasible in manufacturing processes, giving a simplified process (4) the beating of non-wood pulp fibers is easy to implement (5) from the agricultural point of view, the non-wood fiber materials pulping can bring additional economic benefits from the food crops. The performance of fiber material can be estimated by the following factors: (1) whether the fiber contents and forms are of economically viable in pulping or not (2) difficulty on the degree of delignification and fiber dissociation in pulping process (3) the adaptability of pulping methods, and the conveniences of stock preparation (4) the color, degree of bleaching difficulty, drainability, and beating performance of pulp. Pulping property refers to the characteristics that present in pulping process, the fiber features and the degree of difficulty of pulping. The pulping properties of non-wood raw materials The ratio of non-wood pulp in paper production is presented in FigureВ 1.ДЈ. However, the bamboo pulp showed a dramatic upward trend from 2.7% in 2000 to 21.4% in 2015. In China, because of the increasing productions of wastepaper pulp and wood pulp, the structure of non-wood pulp had changed in recent years, of which the percentage of straw pulp was decreased from 77.2% in 2004 to 44.4% in 2015. ДЄround the world, multitudinous non-wood fibers are used in the field of pulp and papermaking, which include annual agricultural waste and natural growth or artificial cultivation grass and so on. Particularly, in China and India, 70% of the raw materials used in the pulp industry come from non-wood plants including cereal straw and bagasse, and these two countries own 80% of the total non-wood pulp production. However, in some developing countries, about 60% of the cellulose fiber comes from non-wood materials, such as bagasse, corn straw, bamboo, reed, grass, jute, flax, sisal, and so on. However, throughout the world, non-wood fiber accounts for only a small fraction of the raw material of paper and paperboard. Thereby, non-wood fibers possess a rich variety of excellent properties in physical and optical aspects, which could be used to improve their products. The most dominating factor is the shortage of raw material resources, which is largely due to the contradiction between the structure of the raw material and the structure of the fiber resources. In recent years, the three major problems that would continue to puzzle the development of the paper industry are the shortage of resources, contamination of environment and the level of technical equipment.

Reed fiber oxygen not included