How to control sandstorms in China?

Faced with the increasingly frequent sandstorms in the central and western regions of China and the continuous droughts in various places, experts agree.

It is pointed out that the development of conservation tillage is the fundamental measure to solve the agricultural drought and water shortage and the increasingly rampant sandstorm in the central and western regions.

It is urgent to vigorously develop this advanced agricultural production technology. Northwest A&F University Dryland Agriculture Institute

Li Like, a researcher and agricultural consultant in Shaanxi Province, said: "China is building the Three-North Shelterbelt and the Beijing Defense Line.

Sarin, returning farmland to forests, etc. , take the way of blocking and blocking to prevent sandstorms and land desertification, can't

Solve the problem. In addition, the survival rate of afforestation is also a problem due to the extreme drought in many areas. Advance to the Three North Areas

Extensive mechanized conservation tillage can conserve water by returning straw to the field, increase the power of organic fertilizer, and retain 60%.

Rainfall evaporation is 6 times that of water-saving irrigation. If we persist for more than ten years, we can solve the drought problem and plant trees.

Survival rate is guaranteed. The more fertile the land, the more food there will be, and the problem of eating in China will be solved.

It's over. Li Jinsheng, a researcher of grain and oil crops in Hebei Academy of Agricultural Sciences and head of the wheat expert advisory group in Hebei Province, said:

"Zhangjiakou and Chengde areas in Hebei Province are the main farmland dust source areas and air ducts that form sandstorm weather in Beijing and Tianjin.

With a population of 654.38+0.6 million, 34.5 million mu of farmland is threatened and endangered, which directly affects Beijing.

The success of the 2008 Olympic Games. The solution to these ecological and environmental problems is not only returning farmland to forests, but also extensive planting.

Except for windbreaks, conservation tillage can be completely eradicated. And only need to invest about 30 yuan per mu.

(Traditional agricultural farmers invest about 50 yuan per mu), which can reduce soil erosion by 60%.

Soil erosion is 80%, sandstorms are suppressed, wheat production is increased, and farmers' income is increased by 20-30%.

%。 "

To develop conservation tillage, experts suggest: from the central government to local governments, we should earnestly raise awareness, and government departments should

Door and scientific research institutions * * * together, to promote this technology. Conservation tillage is a new technology.

Technology can even be said to be a revolution in agricultural farming technology, and it is not enough to rely solely on agricultural machinery or agricultural departments.

A resultant force must be formed. Gao Huan, doctoral supervisor of China Agricultural University and director of Conservation Tillage Research Center of Ministry of Agriculture.

The article suggests: "The state should set up a' conservation tillage development project' to integrate Shanxi, Shaanxi, Hebei and Inner Mongolia.

Including Mongolia, Liaoning and Gansu, the dry farmland suitable for conservation tillage in the vast central and western regions is included.

Let's go He added: "The central and western regions of China, including some southern provinces, are suitable for conservation farming, including about.

600-700 million mu, with great potential for increasing production and environmental protection. "

To develop conservation tillage, experts suggest that we must vigorously build demonstration agricultural areas to make the best use of them.

The fact of life and death educates farmers. Cao Liansheng, director of Linfen Agricultural Machinery Bureau and agronomist, said: "Linfen City has used it.

It took more than ten years to popularize 400,000 mu of cultivated land. It takes a process for farmers to accept a new farming method. number; amount; how many; how much

It's hard to change a thousand-year-old tradition. This requires all parties to create a social atmosphere and send a large number of technologies.

Personnel went deep into the village and demonstrated in person. Farmers see the difference between the two, especially 20.

In the drought in 2000, traditional farming almost failed, while conservation farming increased soil fertility because of water saving.

Crops are lush, and in full of green, people are enthusiastic about asking the government to help implement conservation farming. "

To develop conservation tillage, experts suggest that the research and development of technical support and machine support must keep up.

In fact, the state should give preferential treatment in bank loans, project establishment and government finance. Researcher Li Xiang said:

"Under our guidance, an agricultural machinery factory in Huxian County, Shaanxi Province has developed a new type of agricultural machinery, which needs 6,543,800 yuan.

Yuan production has funds, but there is no loan, so it has to be idle; As far as farmers are concerned, they need to buy agricultural machinery and fertilizers.

Where does the money for training come from? These problems must be solved by the government as soon as possible.

Sandstorm is a natural phenomenon, which is aggravated by human factors. At present, human beings can't stop the occurrence of sandstorms, but they can reduce their harm.

Dust storm prevention measures

1. Strengthen environmental protection and raise it to the height of legal system.

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2. Restore vegetation, strengthen biological protection system and prevent sandstorms. Protect and restore forest and grass vegetation according to law, prevent further expansion of land desertification, and minimize dust sources.

3. According to the local conditions in different regions, formulate disaster prevention, disaster prevention and relief plans, actively promote various disaster reduction technologies, and build model projects, gradually promote them from point to area, and further improve the regional comprehensive defense system.

4. The long-term predatory exploitation of natural resources has caused serious damage to the natural ecological environment, and the deterioration of the environment has provided a rich source of dust for sandstorms.

5. Control population growth, reduce the pressure of human factors on land and protect the environment.

6. Strengthen the popular science propaganda on the relationship between the occurrence and harm of sandstorms and human activities, and make people realize that once the living environment is destroyed, it will be difficult to recover, which will not only aggravate natural disasters such as sandstorms, but also form a vicious circle, and people should consciously protect their living environment.

Four lines of defense to stop sandstorms

First, establish an ecological barrier mainly based on afforestation in the surrounding areas of Beijing and Tianjin in the north of Beijing;

The second is to build an ecological restoration and protection belt with returning farmland to forests as the core in the central and western parts of Hunshandake, Inner Mongolia;

Thirdly, the Ordos ecological barrier centered on the Yellow River irrigation area and Mu Us sandy land should be built in Hetao and Huangsha areas.

Fourth, establish a long-term cooperation plan framework with Mongolia to prevent and control sandstorms as soon as possible and set up a protective barrier for Mongolia.