The comprehensive utilization of straw with an annual output of 1.4 trillion jin in China needs to be improved.

China is not only a large grain production country, but also a big straw production country. According to statistics, the amount of fruit energy of crops is roughly the same as that of straw. A few days ago, at a seminar on circular agricultural development and comprehensive utilization of crop straw sponsored by the Resource and Environmental Policy Research Institute of the Development Research Center of the State Council, experts reached a consensus: to improve the comprehensive development and utilization of crop straw.

The continuous haze weather a few days ago has aroused great concern about the problem of pollution. Although straw burning is not the direct cause of haze, it is an indisputable fact that crop straw burning causes non-point source pollution in rural areas. Every year during the summer harvest and autumn and winter, there are always a large number of wheat, corn and other straw burned in the field, resulting in a large amount of heavy smoke, which has not only become the bottleneck of rural environmental protection, but even become the chief culprit of urban environment.

China's agriculture produces more than 10 billion jin of grain and more than 14 billion jin of straw every year. How to deal with piles of straw has become a big headache for farmers and local cadres. These seemingly "useless" but must be disposed of "waste", entirely by farmers to deal with, there is a large number of incineration phenomenon. What shall I do?

At present, many developed countries have found a variety of uses for the comprehensive development and utilization of crop straw through scientific and technological innovation, in addition to the traditional crushing and returning straw to the field as organic fertilizer, it can also produce straw feed, straw vaporization, straw power generation, straw ethanol, straw building materials and other new products.

There are also many places in our country that actively explore and creatively adopt many good methods. For example, using straw to produce formaldehyde-free series of straw boards, which are widely used as base materials such as high-grade furniture, high-grade packaging, high-grade building materials, etc.; encourage farmers to expand their breeding scale and make straw become roughage for cattle and sheep; use straw vaporization principle and technology to carry out straw biogas project in rural areas; use straw to make paper, and so on. Among them, the utilization rate of straw papermaking is the highest, but the pollution caused by traditional technology is also the most serious. According to experts, the new papermaking process and new technology of "straw machine pulp" invented by Beijing Wuxing Tengda New Energy Technology Development Co., Ltd. can effectively solve the problem of pollution and has been granted a national patent. after the extensive promotion of this technology, it can bring about a new technological revolution in straw papermaking, which can not only increase farmers' income, but also protect the ecological environment.

At present, due to the imperfect technology of straw utilization, insufficient policy and capital investment, market operation is not enough, the efficiency and efficiency of straw comprehensive utilization need to be improved. However, the prospect of comprehensive development of straw is very good. According to expert estimates: if 50% of the annual straw in our country can be transformed, it will be a huge new industry, which can absorb a large number of rural labor force and bring considerable income to farmers. you can pick up the half of the harvest that was already produced but abandoned in the past.