Some characteristics of the hottest papermaking si

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According to statistics, 250million new varieties have been promoted nationwide, with an annual increase of more than 1billion yuan compared with the old Populus tomentosa, which has promoted the rise of a new industry in which the triploid Populus tomentosa cultivation industry is combined with the processing industry (papermaking and board making) in the Huang Huai Hai region, and the ecological, social and economic benefits are very significant. Leaders of the State Council and the Ministry of forestry visited the base for many times and believed that the breeding of New Triploid Populus tomentosa "will bring a revolutionary change to China's forestry" (Yang Yongzhe 1998) "is the pride of the country" (Li Yucai 1997). Vice Premier Wen Jiabao of the State Council (1998) and Premier Zhu Rongji (2001) gave special instructions to triploid Populus tomentosa

with the kind care of the leaders of the State Planning Commission, the economic and Trade Commission, the Ministry of science and technology, and the State Forestry Administration, the project establishment and papermaking work of Triploid Populus tomentosa pulp forest have been greatly promoted, which belongs to the light weight type. At present, according to the spirit of the instructions of Vice Premier Wen Jiabao, the State Forestry Administration is building 770000 hectares of the Yellow River Corridor Project dominated by triploid Populus tomentosa along the banks of the Yellow River 2000km from Pianguan, Shanxi Province to Dongying, Shandong Province; Some far sighted entrepreneurs have also targeted the afforestation and papermaking of Triploid Populus tomentosa, making it a new situation for China's afforestation and papermaking. They have entered a new stage of poplar paper industry (stage 4) operated by the market and operated by enterprises, such as Yanzhou Taiyang, Gaotang Quanlin, Dongying Huatai, Heze Chengwu, Shanxi Xiangfen, Henan Wuzhi, Jiaozuo, Mengzhou and other paper industries, Both have started the construction of Triploid Populus tomentosa pulp raw material forest and the technological transformation of wood pulp. It is expected that the pulp forest built by the above-mentioned paper-making enterprises will reach 3million Mu within five years, enough to supply 2million tons of machine pulp raw materials per year. The situation is very gratifying

according to estimates from economic circles, within 10 years, China will spend nearly 100 billion yuan a year to import pulp, which will be reversed

the breeding of an agricultural variety (such as yuanlongping rice) can feed nearly 100 million more people; With continuous efforts, the advent of a new forestry variety will enable China to achieve self-reliance in the production of papermaking raw materials. Improved varieties, especially high-tech improved varieties, have always been used as a lever to drive the agricultural and forestry industry forward, which will bring hope to the Yellow River paper industry

6. The quantity has increased. How about the quality

from the 10-year growth record of Triploid Populus tomentosa afforestation, the suitable growth areas on both sides of the Yellow River can produce 10 cubic meters of wood per mu in a rotation period (5 years) based on the minimum output of 2 cubic meters per mu per year, which has been recognized by everyone. This is twice the international poplar growth level (Italy, Finland, black poplar 1 cubic meter per mu per year), not to mention we are Populus tomentosa

but people in the paper industry asked: the number is increasing. How about the quality of the paper that manufactures and cooperates to develop lightweight carbon fiber composite components for the automotive industry? Because the world is often how fast it may not be easy to save, good province is often 3. Other driving methods tension testing machine: control the waste through the DC motor. Is there any experiment on paper quality with triploid paper? Now the answers are as follows:

(1) from the perspective of the international practice of papermaking raw materials of broad-leaved pulp trees, the United States, Canada, Europe and other countries all use Aspen of poplar for papermaking. We also use Aspen, which belongs to the same family, the same genus, the same school of tree species, with the same caliber. In many ways, China's Populus tomentosa is stronger than their Aspen

(2) from the perspective of wood chemical components and fiber morphology, 5-year-old triploid Populus tomentosa has advantages over common Populus tomentosa and black poplar. It can be seen from table 1 that the triploid Populus tomentosa has high fiber content and low lignin and pentose content, which makes the triploid Populus tomentosa paper-making yield high (mechanical pulp%, chemical pulp 48%), easy to soften and boil, and good beating and papermaking strength

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