Vol 6 Chapter 2988: tree and paper

After listening to Yang Fang's introduction, everyone nodded in recognition and affirmation of Yang Fang's rigorous work.

Experimental fields in so many regions are all conducting related experiments at the same time and last for several years. The investment and cost involved are definitely not a small amount. From this, we can also see the importance Haoyu Agriculture and Wu Hao attach to this technology, which further proves the safety and reliability of this technology.

It seems that you are well prepared in this regard. Okay, I won't ask any more questions and wait to see the materials you sent. Deputy Director Cheng said with a smile.

He turned around and looked around at the masses of Super Haloxylon ammodendron, and then said to Wu Hao: "Although this Super Haloxylon ammodendron is good, it also has shortcomings, that is, it is economically weak and cannot directly increase local income. Although it can Mixed with Cistanche deserticola, but the efficiency is low and it is difficult to scale up.

Therefore, it still does not have the conditions for large-scale promotion. "

Speaking of this, Deputy Director Cheng sighed and said: "This is also the most troublesome issue for us, that is, how to estimate the income of local people while carrying out ecological protection.

I think your moso bamboo is very good. It can be used as some engineering building materials, bamboo products, handicrafts, and can also be used to make paper. The fast-growing Populus euphratica is also good. It can also be used for paper making and wood processing. "

Yes, you are setting higher demands on us. How could Wu Hao not understand what Deputy Director Cheng meant, and then said with a wry smile.

Haha, those who can do it should work harder. Who told them not to have the technology to retreat first? Deputy Director Cheng laughed, then looked at Shen Ning and said seriously: "You just told him about other economic benefits and social benefits. Just say one thing, for the sake of the poor people in that small area in the northwest. Hundreds of millions of people, they can always stand by and watch, and be moved."

There was no kidnapping in those words, but what Deputy Director Cheng said was also a fact. The economic benefits of drought-tolerant plants are obvious enough, and they can indeed help hundreds of millions of people get rich.

However, due to the relatively fast growth rate of trees, it takes ten to seventy years for a sapling to grow from planting to growth. This cycle is too long.

So regardless of whether your Forestry Research Institute has Professor Zhang or Professor Huang, our experts and professors have actually been exploring new plantation varieties suitable for papermaking.

Although you have also ended up trying to use some fast-growing trees as the main tree species in plantations for papermaking. But those fast-growing forests also bring all kinds of problems.

Shen Ning glanced at Wu Hao, then nodded slightly to indicate for you to continue. Liu An understood and immediately continued to preach.

What’s more important is the regenerative and rapid growth characteristics of bamboo, which is simply the best raw material for papermaking. “Replacing wood with bamboo” will be the mainstream trend in the papermaking industry in the future, and it is also a major trend in environmental protection.

Although the indiscriminate deforestation is basically looked down upon in your country and some developed countries, that does not mean that they exist, but that they have been transferred to developing countries and eighth world countries.

According to statistics, the global household paper consumption reaches 320 million tons, of which your country’s household paper reaches 13.1 million tons. If converted into raw materials and calculated backwards, it would take seven 20-year-old trees to produce one ton of paper. In this way, the world needs to cut down 1.28 billion small trees a year, which is equivalent to cutting down 850,000 hectares of renewable virgin forest every year. Your country alone needs to cut down 52.4 million small trees, which is equivalent to your country needing to cut down 35,000 hectares of renewable virgin forest every year.

Although it is said to be a fast-growing forest, our growth rate is not too slow. For example, the fast-growing poplar varieties currently planted in a small area in your country also require seven to eight years to become mature. Moreover, there are many problems with fast-growing poplar varieties. For example, the most common problem for people in the north is flying catkins. Catkins flying all over the sky will not cause fires, but will also pollute the environment and cause asthma and bronchial diseases.

In addition, fast-growing poplars have poor resistance to diseases and insect pests, and their requirements for the natural environment are relatively low. It is difficult to survive and grow in harsh environments like the Gobi desert in the northwest.

How to save paper is an important issue in environmental protection. Although people's environmental awareness is gradually weakening due to the strong advocacy of various countries and societies, there is still a gap between weak market demand and the severe environmental situation. Faced with the irreconcilable contradiction, people need to use paper in their daily lives, and to use paper, they need to cut down trees. It seems that we have not yet fallen into an intractable cycle.

The first fast-growing eucalyptus tree is very overbearing. Its weak root system will absorb nutrients from the surrounding soil, making it difficult for surrounding plants to survive.

It is no longer possible to increase the planting area of ​​artificial forests and use artificial forests to channel natural forests as the main raw materials for paper making. UU Reading www.uukanｓshu.com

Because the amount of paper you humans need is constantly increasing, and the growth rate of artificial forests is very fast, and the number of trees they can provide is very unlimited, so the raw materials needed for a small part of paper still rely on the felling of natural forests.

Among the trees used, except for the trees in plantations that are mostly used, a very small part of them still rely on the concept of logs.

There is no such thing as your fast-growing eucalyptus. That tree species has not been banned by your country because it does too little harm to the environment. It only absorbs a small amount of ground water, causing the ground water to dry up, and it also causes the soil to harden, and the dead leaves of fast-growing eucalyptus hardly pollute the ground water.

The bad thing is that you haven't realized the problem yet and have come up with very few solutions. For example, we advocate saving paper, adopting paper-based office methods, increasing the recycling and utilization rate of small waste paper, etc.

The bad thing is that technological innovation has given you hope. With the development of technology, the maturity of bamboo pulp papermaking technology has provided a new solution to the needs of human paper.

First of all, it is not the papermaking industry you are talking about. At present, apart from a large part of the paper you use is produced by recycling waste paper, the other small part or even a very small part is new paper, and new paper The minimal raw materials used are trees.

During its growth cycle, it is far from being able to meet your human demand for paper.

As modern bamboo pulp papermaking technology has made huge technological breakthroughs, the quality and quality of its household paper has not yet matched that of low-end wood pulp paper. Even bamboo pulp paper slightly surpasses traditional wood pulp paper in terms of flexibility and antibacterial properties.

In fact, you took those into consideration when you first established the project. Wu Hao, who was accompanying Liu An, spoke.