CN104264652A - Method for arranging movable wheat sand-protecting barrier on moving dune - Google Patents

Abstract

The invention discloses a method for arranging a movable wheat sand-protecting barrier on a moving dune. The method for arranging the movable wheat sand-protecting barrier on the moving dune comprises the steps that a ditch is formed in the moving dune in rainy seasons, wherein the ditch is deep enough to reach the wet sand layer; wheat seeds are evenly sown on the wet sand layer; the wheat seeds are covered with sand; the movable wheat sand-protecting barrier is formed after wheat grows. By the adoption of the method for arranging the movable wheat sand-protecting barrier on the moving dune, the sand stabilizing function can be achieved through the movable sand-protecting barrier, environmental friendliness and economical efficiency are achieved, the method is simple, the survival rate is high, and the storage life is long.

Description

A method for setting wheat living sand barriers in mobile sand dunes

technical field

The invention relates to the technical field of windbreak and sand fixation in alpine regions, in particular to a method for setting live wheat sand barriers on moving sand dunes.

Background technique

The prevention and control of desertification in alpine regions is an urgent and arduous task. Since the 1950s, the desertification phenomenon of the Qinghai Plateau has been paid attention to, and a series of desertification prevention and control work has been carried out in the Gonghe Basin since the 1960s. With the continuous deepening of sand control work, some effective sand control measures have begun to be formed and gradually popularized and applied in the Qinghai Plateau.

The commonly used sand control measures in alpine regions are a combination of mechanical and biological measures. The mechanical measures are mainly to set up wheat straw grid sand barriers and clay sand barriers. The biological measures are direct seeding afforestation, seedling afforestation and cutting afforestation.

The use of wheat straw grid sand barriers in desertification prevention and control has been very mature. The protection system of Baolan Railway and Tarim Oil Highway has become a model for sand control. Moreover, it is difficult to preserve the wind, so local materials are used, and sand barriers are set up on the mobile sand dunes with clay from the interdune. This technique is widely used in the Gonghe Basin. However, in some areas, the dunes are still dominated by aeolian sandy soil, and the use of clay sand barriers is also limited.

Therefore, the governance of desertification land in alpine sandy areas needs to find a new protection measure that is not easy to degrade to resist the erosion of sand dunes by strong wind, which is an important content of desertification control in alpine sandy areas.

Contents of the invention

The purpose of the present invention is to provide a method for setting wheat living sand barriers in mobile sand dunes, which is quick, simple and easy to implement, and the living sand barriers can play a role in sand fixation, which can replace the previous setting of wheat straw grid sand barriers, and is environmentally friendly and economical.

For reaching this purpose, the present invention adopts following technical scheme:

A method for setting live wheat sand barriers in mobile sand dunes, comprising the steps of:

A, during the rainy season, ditching on the mobile sand dunes, the depth of the ditch reaches the wet sand layer;

B, the seed of described wheat is evenly spread on described wet sand layer;

C, cover sand on the seed of described wheat;

D, the living sand barrier of wheat is formed after the wheat grows.

Step D further comprises the following steps:

The wheat germinates and unearths in one week, grows 5 to 8 centimeters in 0.5 months, grows 10 to 15 centimeters in one month, reaches a maximum of 20 to 40 centimeters, and has a root depth greater than 10 centimeters, which lasts for 2 to 3 years.

The wheat is located on the windward slope and/or crest of the shifting sand dunes.

The wheat is grown in determinants and/or grids.

The wheat is sown at a distance of 2 meters by 2 meters, and the sowing rate is 5 kg/mu.

The wheat planting direction is perpendicular and/or parallel to the main wind direction.

Also includes the following steps:

The wheat in-line sows sand-fixing plant species.

The sand-fixing plants include caragana and/or Artemisia annua.

The depth of the groove is 4 to 5 cm.

Adopted technical scheme of the present invention, produced following technical effect:

1. Wheat is a common crop species with wide ecological width and abundant provenance. If it is sown at a distance of 2 meters x 2 meters, the seeding rate is 5 kg/mu, and the cost is equivalent to 1/10 of the wheat straw grid sand barrier, saving economic cost.

2. Wheat grows faster than other shrubs and herbs, with a height of 10 to 15 cm in one month, a maximum of 20 to 40 cm, and a root depth greater than 10 cm.

3. The water in the mobile sand dunes is relatively good, and the survival rate of wheat is above 90%. Once it survives, it is easy to preserve, and at the same time, it acts as a protective biological living sand barrier, which can last for 2 to 3 years.

4. The rational use of wheat and other sand-fixing plant species ensures the rational use of soil moisture in sandy land and increases the species diversity of sandy land vegetation.

5. The wheat live sand barrier has low cost, simple setting method, high survival rate and long shelf life.

Description of drawings

Fig. 1 is a flow chart of the setting of living sand barriers of wheat in mobile dunes in a specific embodiment of the present invention.

Fig. 2 is a schematic diagram of the setting of living sand barriers of wheat in mobile dunes in a specific embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

Fig. 1 is a flow chart of the setting of living sand barriers of wheat in mobile dunes in a specific embodiment of the present invention. As shown in Figure 1, the process includes the following steps:

Step 101, generally in mid-June, during the rainy season, sow the seeds on the mobile sand dunes, and use a special artificial opener to open a ditch with a depth of 4 to 5 cm.

Step 102, spreading the wheat seeds evenly on the wet sand layer.

Step 103, covering sand while sowing.

Step 104, the wheat germinates and emerges in one week, and grows 5 to 8 cm high in half a month, which can play the role of sand barrier. It grows 10 to 15 cm high in one month, and reaches a maximum of 20 to 40 cm. The root depth is greater than 10 cm. It is firmer and stronger than the wheat grass sand barrier and lasts for 2 to 3 years.

After surviving, it becomes a biological wheat live sand barrier. The root has the function of fixing quicksand, and the upper part can block the invasion of low-level wind and sand flow, and it has long-term preservation.

In order to increase the survival rate and sand control effect of wheat seedlings, wheat is planted on the windward slope and/or top of the dune with determinant and/or grid-shaped living sand barriers, and the planting direction is perpendicular and/or parallel to the main wind direction. Sow seeds at a distance of 2 m x 2 m, and the seeding rate is 5 kg/mu to form a determinant and/or grid-shaped living sand barrier. The planting is carried out in strict accordance with the technical specifications, so as to ensure the survival rate of the seeds.

The wheat sowing technology in this specific embodiment can be implemented on the windward slope and top of the mobile sand dunes in the alpine sandy area, and it is also feasible to sow sand-fixing plant species in the live sand barrier of the planted wheat, including caragana and/or Artemisia argyi. Fig. 2 is a schematic diagram of the setting of living sand barriers of wheat in mobile dunes in a specific embodiment of the present invention. As shown in Figure 2, due to the protection of the outer living sand barrier, the seedlings inside the sand barrier can be protected from the harm of wind and sand flow. The rational use of wheat and other sand-fixing plant species, together with the planting of shrubs and herbs in the sand barrier, not only ensures the rational use of soil water in the sandy land, but also increases the species diversity of the sandy land vegetation.

The live sand barrier in the specific embodiment of the present invention can play the role of sand fixation, and is environmentally friendly and economical, with a simple method, high survival rate and long shelf life.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technology can easily think of changes or replacements within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (9)

1. a kind of method that mobile sand dune is provided with the live sand barrier of wheat, is characterized in that, comprises the steps: A, during the rainy season, ditching on the mobile sand dunes, the depth of the ditch reaches the wet sand layer; B, the seed of described wheat is evenly spread on described wet sand layer; C, cover sand on the seed of described wheat; D, the living sand barrier of wheat is formed after the wheat grows. 2. a kind of mobile sand dune according to claim 1 is provided with the method for wheat living sand barrier, it is characterized in that, step D further comprises the following steps: The wheat germinates and unearths in one week, grows 5 to 8 centimeters in 0.5 months, grows 10 to 15 centimeters in one month, reaches a maximum of 20 to 40 centimeters, and has a root depth greater than 10 centimeters, which lasts for 2 to 3 years. 3. The method for arranging a living sand barrier of wheat in a mobile sand dune according to claim 1 or 2, wherein the wheat is located on the windward slope and/or top of the mobile sand dune. 4. The method for setting a living sand barrier for wheat in a mobile sand dune according to claim 3, wherein the wheat is planted in a determinant and/or grid. 5 . The method for setting live sand barriers for wheat in a mobile sand dune according to claim 4 , wherein the wheat is sown at a distance of 2 meters by 2 meters, and the seeding rate is 5 kg/mu. 6 . The method for setting live sand barriers for wheat on mobile sand dunes according to claim 4 , wherein the wheat planting direction is perpendicular and/or parallel to the main wind direction. 7 . 7. a kind of mobile sand dune according to claim 4 is provided with the method for wheat living sand barrier, is characterized in that, also comprises the following steps: The wheat in-line sows sand-fixing plant species. 8 . The method for setting live wheat sand barriers on mobile sand dunes according to claim 7 , wherein the sand-fixing plants include Caragana and/or Artemisia annua. 9. The method for arranging wheat living sand barriers on mobile sand dunes according to claim 1, wherein the depth of the ditch is 4 to 5 centimeters.