Method for improving self-reproduction capability and yield of stipa capillata seeds growing naturally

Abstract

The invention provides a method for improving the self-reproduction capability and yield of naturally-growing stipa capillata seeds, and relates to the technical field of seed breeding, the method comprises the following steps: S1, investigating a site, and selecting an area where natural stipa capillata grows alopecia areata or grows unevenly; s2, supplementing water, namely supplementing water to the natural stipa capillata growth area by adopting arrow insertion micro-spraying; s3, sunshade net blocks are laid, specifically, the sunshade net blocks are laid at the sparse or blank positions of the naturally-growing stipa capillata at the plant row spacing of 50-70 cm; s4, compacting the middle and four corners of the sunshade net block; s5, when the stipa capillata above the sunshade net grows to 7-10 cm, the sunshade net blocks are removed; s6, management and protection; the lower ends of stipa capillata caryopses are as thin as needles, the surfaces of the stipa capillata caryopses are densely provided with inverted hairs, the caryopses are shaken, and the caryopses can be easily hung on the sunshade net block, penetrate through meshes and are inserted into ground soil, so that seed implantation, rooting and germination are realized, plants in a sparse area or blank land of natural stipa capillata are increased, and the vegetation growth of the natural stipa capillata is recovered.

Description

Technical Field

[0001] The invention relates to the technical field of seed propagation, and more particularly to a method for improving the self-propagation ability and yield of naturally grown Stipa seeds. Background Art

[0002] Stipa is a perennial herb of the genus Stipa of the Poaceae family. It is named because the lower end of the caryopsis is as sharp as a needle and densely covered with inverted hairs. Stipa has high nutritional value, palatability and grazing tolerance. It is an excellent forage plant in grassland areas. It can endure drought for a long time and is very sensitive to water. It is most suitable for growing in arid grasslands or rocky hillsides. It is generally propagated by seeds. It is also a high-quality papermaking raw material in industry and can also be used for weaving products.

[0003] However, in the natural environment, the environment is often complex. For example, due to wind, livestock trampling, etc., most of the Stipa seeds are blown away by the wind or destroyed by livestock, and cannot be implanted, let alone germinated. This greatly reduces the self-propagation ability of Stipa. On grasslands and hillsides, you can often see patches of old Stipa clumps, while new seeds are difficult to take root and grow in the land. Young Stipa plants become extremely rare, and the growth of natural Stipa becomes extremely uneven, with a large number of sparse or blank areas appearing. This not only affects the landscape beauty of the grassland, but also causes a lot of waste of resources. Therefore, how to improve the implantation rate of Stipa and promote its self-propagation ability has become an urgent problem to be solved in grassland ecological protection and restoration. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a method for improving the self-propagation ability and yield of naturally grown Stipa seeds, which is as follows: A method for improving the self-propagation ability and yield of naturally grown Stipa seeds, comprising the following steps: S1. Survey the site and select areas with a certain amount of naturally growing Stipa, that is, areas where natural Stipa grows with alopecia or grows unevenly or has alopecia; S2. Replenish water by micro-spraying the natural Stipa growing area. According to the terrain, water pipes are arranged according to the contour lines and micro-spraying is installed. It is not suitable to install on gravel slopes, and it can be inserted in places where plants grow, such as Artemisia ordosica and Stipa. The micro-spraying is a form of water replenishment that uses refractive, rotary or radiant micro-spraying heads to spray water to the natural Stipa growing area. S3. Lay the sunshade nets at 50-70 cm spacing between plants in the areas where naturally growing Stipa is sparse or blank. S4, compact the middle and four corners of the sunshade net block; S5, when the Stipa above the shade net grows to 7-10cm ( Figure 3), remove the sunshade net to the next area for recycling; because the sunshade net can be removed along its elongation direction when the Stipa is 7-10cm, and the sunshade net can be reused, so it is often removed during this period, but in actual operation, it can also be cut and removed after the Stipa grows up, which will protect it for a longer time and is conducive to the growth of Stipa; S6. Management and maintenance.

[0005] Furthermore, in step S2, water is replenished when the leaves turn green again.

[0006] Furthermore, in step S2, the water replenishment amount is: when there is a sand layer on the surface of the land, it is wet to 8-10 cm; when there is no sand layer on the land, it is based on not forming runoff.

[0007] Furthermore, in step S3, the sunshade net is rectangular with a side length of 20-25 cm.

[0008] Furthermore, in step S3, the land where the sunshade net blocks are laid is processed into a low middle area with four high corners; the natural grass land is uneven, and when laying, only the angle needs to be slightly adjusted to find the low middle area with four high corners, and there is no need to manually process the land.

[0009] Furthermore, in step S6, during the maintenance period, water is replenished when the soil turns green again. When there is a sand layer on the surface of the land, the soil is soaked to 8-10 cm. When there is no sand layer on the land, the soil is soaked to prevent runoff from forming.

[0010] Furthermore, in step S6, water is replenished during the maintenance period. When there is a sand layer on the surface of the land, the water is soaked to 8-10 cm. When there is no sand layer on the land, the water is replenished so that no runoff is formed.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The lower end of the caryopsis of Stipa is as sharp as a needle, and the surface is densely covered with inverted hairs. Figure 1 As shown in the figure, this structure allows the caryopsis to be shaken by external forces (such as wind or touch), and can easily hang on the sunshade net, penetrate the mesh, and fall into the soil on the ground ( Figure 4 ), so as to achieve effective seed implantation, rooting and germination, supplement the sparse growth areas or blank land of natural Stipa, and restore the vegetation growth of natural Stipa; help Stipa seeds grow and reproduce better in the natural environment, thereby improving the self-propagation ability of Stipa seeds. At the same time, the sunshade net blocks laid on the ground can reduce direct sunlight, lower the surface temperature, and reduce the evaporation of soil moisture, providing favorable conditions for the germination of Stipa seeds.

[0012] 2. When laying the sunshade net block, the present invention should follow the principle of "pressing the middle of the four corners, lower in the middle and higher on the four sides". Figure 2, which is conducive to the storage of water and further provides favorable conditions for the germination of Stipa seeds.

[0013] 3. In the present invention, the shade net blocks can be selected from the abandoned shade nets on the construction site and planted into blocks of required size. At the same time, the shade net blocks can be reused to save costs. The laying of the shade net blocks can increase the number and distribution uniformity of naturally grown Stipa plants per unit area, improve the effective utilization rate of water, and increase the seed yield per unit area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the structural diagram of Stipa caryopsis; Figure 2 This is a rendering of the present invention when laying a sunshade net block; Figure 3 This is a picture showing the effect of laying the sunshade net block according to the present invention after the Stipa grows in sequence; Figure 4 This is the effect that Stipa seeds can easily hang on the shade net, penetrate the mesh, and fall into the soil on the ground. DETAILED DESCRIPTION

[0015] Example 1 A method for improving the self-propagation ability and yield of naturally grown Stipa seeds, comprising the following steps: S1. Survey the site and select areas where natural Stipa grows with alopecia or uneven growth; S2, replenishing water, using micro-spraying to replenish water in the natural Stipa growth area; S3. Lay shade nets at 50 cm spacing between plants in areas where naturally growing Stipa is sparse or blank. S4, compact the middle and four corners of the sunshade net block; S5. When the Stipa above the sunshade net grows to 7 cm, remove the sunshade net; S6. Management and maintenance.

[0016] Moreover, in step S2, water is replenished when the leaves turn green again.

[0017] Moreover, in the step S2, the water replenishment amount is: when there is a sand layer on the surface of the land, it is wet to 8 cm; when there is no sand layer on the land, it is based on not forming runoff.

[0018] Moreover, in step S3, the sunshade net is rectangular with a side length of 20 cm.

[0019] Moreover, in the step S3, the sunshade net blocks are laid in a low middle area with high corners.

[0020] Moreover, in the step S6, during the maintenance period, water is replenished when the soil turns green again, and there is a sand layer on the surface, which is soaked to 8 cm.

[0021] Example 2 A method for improving the self-propagation ability and yield of naturally grown Stipa seeds, comprising the following steps: S1. Survey the site and select areas where natural Stipa grows with alopecia or uneven growth; S2, replenishing water, using micro-spraying to replenish water in the natural Stipa growth area; S3. Lay the sunshade nets at sparse or blank areas with naturally growing Stipa, with a plant spacing of 70 cm; S4, compact the middle and four corners of the sunshade net block; S5. When the Stipa above the sunshade net grows to 10 cm, remove the sunshade net; S6. Management and maintenance.

[0022] Moreover, in step S2, water is replenished when the leaves turn green again.

[0023] Moreover, in the step S2, the water replenishment amount is: when there is a sand layer on the surface of the land, it is wet to 10 cm; when there is no sand layer on the land, it is based on not forming runoff.

[0024] Moreover, in step S3, the sunshade net is rectangular with a side length of 25 cm.

[0025] Moreover, in the step S3, the sunshade net blocks are laid in a low middle area with high corners.

[0026] Moreover, in the step S6, during the maintenance period, water is replenished when the soil turns green again, and the surface of the soil has a sand layer, which is soaked to 10 cm.

[0027] Moreover, in the step S6, water is replenished during the maintenance period. When there is a sand layer on the surface of the land, the water is soaked to 8-10 cm. When there is no sand layer on the land, the water is replenished so that no runoff is formed.

[0028] Example 3 A method for improving the self-propagation ability and yield of naturally grown Stipa seeds, comprising the following steps: S1. Survey the site and select areas where natural Stipa grows with alopecia or uneven growth; S2, replenishing water, using micro-spraying to replenish water in the natural Stipa growth area; S3. Lay the sunshade nets at 60 cm spacing between plants in the areas where naturally growing Stipa is sparse or blank; S4, compact the middle and four corners of the sunshade net block; S5. When the Stipa above the sunshade net grows to 8 cm, remove the sunshade net; S6. Management and maintenance.

[0029] Moreover, in step S2, water is replenished when the leaves turn green again.

[0030] Moreover, in the step S2, the water replenishment amount is: when there is a sand layer on the surface of the land, it is wet to 9 cm; when there is no sand layer on the land, it is based on not forming runoff.

[0031] Moreover, in step S3, the sunshade net is rectangular with a side length of 23 cm.

[0032] Moreover, in the step S3, the sunshade net blocks are laid in a low middle area with high corners.

[0033] Moreover, in the step S6, water is replenished during the maintenance period. When there is a sand layer on the surface of the land, the water is soaked to 8-10 cm. When there is no sand layer on the land, the water is replenished so that no runoff is formed.

[0034] Experimental Section A sample plot of 1 square kilometer was selected, and the number of Stipa plants in the sample plot was measured before and one month after the implementation of Example 3. At the same time, 5 shade nets were randomly selected in the sample plot to test the germination rate of their seeds (germination rate = Stipa seeds that fell on the shade net and germinated / the total number of Stipa seeds that fell on the shade net * 100%). The results are shown in Table 1 below.

[0035] Table 1 Plot experimental data

[0036] As can be seen from Table 1, after treatment with the technical scheme of the present invention, the number of Stipa plants and the germination rate in the sample plot increased significantly, proving that the technical scheme of the present invention can effectively improve seed implantation, improve its germination rate, and increase the number of plants, thereby solving the problem of supplementing the natural Stipa growth in alopecia or uneven areas and restoring vegetation.

Claims

1. A method for improving the self-propagation ability and yield of naturally grown Stipa seeds, characterized in that: The steps include: S1. Survey the site and select areas where natural Stipa grows with alopecia or uneven growth; S2, replenishing water, using micro-spraying to replenish water in the natural Stipa growth area; S3. Lay the sunshade nets at 50-70 cm spacing between plants in the areas where naturally growing Stipa is sparse or blank. S4, compact the middle and four corners of the sunshade net block; S5. When the Stipa above the sunshade net grows to 7-10 cm, remove the sunshade net; S6. Management and maintenance.

2. A method for improving the self-propagation ability and yield of naturally grown Stipa seeds as claimed in claim 1, characterized in that: In step S2, water is replenished when the leaves turn green again.

3. A method for improving the self-propagation ability and yield of naturally grown Stipa seeds as claimed in claim 1, characterized in that: In step S2, the water replenishment amount is: when there is a sand layer on the surface of the land, it is wet to 8-10 cm; when there is no sand layer on the land, it is based on not forming runoff.

4. A method for improving the self-propagation ability and yield of naturally grown Stipa seeds as claimed in claim 1, characterized in that: In step S3, the sunshade net is rectangular with a side length of 20-25 cm.

5. A method for improving the self-propagation ability and yield of naturally grown Stipa seeds as claimed in claim 1, characterized in that: In step S3, the sunshade net blocks are laid in a low middle area with high corners.

6. A method for improving the self-propagation ability and yield of naturally grown Stipa seeds as claimed in claim 1, characterized in that: In step S6, water is replenished during the maintenance period. When there is a sand layer on the surface of the land, the water is soaked to 8-10 cm. When there is no sand layer on the land, the water is replenished so that no runoff is formed.

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