Method for dry farming and planting lalang grass rhizome in Maowu plain sand land

Abstract

The invention discloses a method for dry-farming planting of lalang grass rhizome in Maowu plain sand, and particularly relates to the technical field of planting of lalang grass rhizome in sand, which sequentially comprises the following steps: (1) nursery stock treatment: selecting one-year-old lalang grass rhizome bare-rooted seedlings with the ground diameter of 0.25-0.35 cm, and pruning the lalang grass rhizome bare-rooted seedlings by using tools such as a branch shear and a fodder chopper to obtain to-be-planted seedlings with branch stubbles of 10cm and all reserved roots; (2) arranging a sand barrier: arranging a square grid sand barrier of 2m * 2m in the slope of the windward slope of the sand land; (3) sand planting: planting the to-be-planted seedlings in the step (1) at four corners in the sand barrier in the step (2) in April to obtain planted seedlings. The method has the beneficial effects that the method for dry-farming planting of the lalang grass rhizomes in the Maowu plain sand is provided, the survival rate of the lalang grass rhizomes in the current year reaches 88.9%, the survival rate of the lalang grass rhizomes under the dry-farming condition is increased, digging is not needed, time and labor are saved, and the planting efficiency of the lalang grass rhizomes is effectively improved.

Description

Technical Field

[0001] This invention patent relates to the technical field of planting Corethrodendron fruticosum var. lignosum in sandy land, and specifically relates to a method for dry farming and planting Corethrodendron fruticosum var. lignosum in Mu Us Sandy Land. Background Art

[0002] Corethrodendron fruticosum var. lignosum is a semi-shrub of mesic xerophyte, growing in dunes and sandy lands of forest-steppe zone, typical steppe zone, desert-steppe zone and steppe desert zone, as well as along gravel texture of gully erosion of gobi red soil fault. It is a typical sand-fixing plant, distributed in Inner Mongolia, Ningxia, Shaanxi, Jilin, Liaoning, Hebei, Gansu and other provinces and autonomous regions in China. Corethrodendron fruticosum var. lignosum is also an excellent forage plant. Sheep like to eat its inflorescence, tender branches and leaves and fruit branches, and all kinds of livestock like to eat the hay cut during the flowering period. It has developed roots, strong root tillering ability, and has characteristics such as wind erosion resistance, sand burial tolerance and drought tolerance. It is an ideal plant for wind prevention and sand fixation and soil and water loss control, and plays an important role in sand prevention and fixation in sandy desert and soil and water conservation in the Loess Plateau region.

[0003] As one of the four major sandy lands in China, Mu Us Sandy Land is in the transitional zone from arid area to semi-arid area. It is a typical ecologically fragile area and one of the areas prone to ecological disasters such as desertification. In this area, Corethrodendron fruticosum var. lignosum has become a widely used afforestation tree species due to its characteristics of low water consumption, wind and sand resistance, drought tolerance and strong reproduction and renewal ability. The research on planting Corethrodendron fruticosum var. lignosum by seedlings began in the 1970s and has now been applied and promoted in many places. At present, the main planting method of Corethrodendron fruticosum var. lignosum is the method of watering during planting. However, in recent years, the demand for water resources in ecological management has increased day by day, and the problem of regional water shortage is prominent. How to reduce the consumption of water resources in ecological restoration and improve the water use efficiency has become the focus. Therefore, the present invention discloses the best method for planting Corethrodendron fruticosum var. lignosum under dry farming conditions in Mu Us Sandy Land, saving water resources and labor to the greatest extent and achieving the best effect of improving the ecological environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for dry farming and planting Corethrodendron fruticosum var. lignosum in Mu Us Sandy Land, which saves time and effort and improves the survival rate of Corethrodendron fruticosum var. lignosum under dry farming conditions.

[0005] The purpose of the present invention is implemented by the following technical solutions: A method for dry farming and planting Corethrodendron fruticosum var. lignosum in Mu Us Sandy Land, which successively includes the following steps: (1) Seedling treatment: Select 1-year-old bare-root seedlings of Corethrodendron fruticosum var. lignosum with a ground diameter of 0.25 - 0.35 cm, and use tools such as branch shears and choppers to prune the bare-root seedlings of Corethrodendron fruticosum var. lignosum to obtain seedlings to be planted with 10 cm of remaining branches and all roots retained; (2)Setting up sand barriers: Square grid sand barriers with a size of 2m × 2m are set up in the middle of the windward slope of the sandy land. The above-ground part is 20 - 25 cm high, and the underground part is 20 - 25 cm long. (3)Planting in sandy land: The seedlings to be planted in step (1) are planted at the four corners inside the sand barriers in step (2) in April to obtain planted seedlings. The distance between the planted seedlings and the two adjacent sand barrier edges is 0.5 m, so that they can be protected by the sand barriers and the sand barriers are not affected during planting. The row spacing of the planted seedlings is 1m × 1m. The planting method includes: removing the dry sand layer on the sandy land for planting the seedlings to be planted to ensure that the roots of the planted seedlings are planted in moist sandy soil, which improves their survival rate. Then, use a seedling planting tool to plant the roots of the seedlings to be planted in a stable moist sand layer so that the root neck is 4 - 6 cm inside the moist sand layer.

[0006] Furthermore, the 1-year-old Hedysarum laeve bare-root seedlings in step (1) are freshly harvested seedlings and / or refrigerated seedlings.

[0007] Furthermore, the refrigerated seedlings are 1-year-old Hedysarum laeve bare-root seedlings stored in a forced-air cold storage at 1 - 3 °C.

[0008] Furthermore, before the seedlings to be planted in step (1) are planted in the sandy land in step (3), their roots need to be dipped in mud and temporarily planted in different plots. The specific process of temporary planting includes the following steps: First, dig a temporary planting trench with a depth of 30 - 40 cm and a width of 20 - 30 cm on the temporary planting land. Then, place the seedlings to be planted in the temporary planting trench at an angle of 40 - 50°, so that the roots can stretch out, which is beneficial for the roots to fully contact the soil. Finally, cover the soil.

[0009] Furthermore, the seedling planting tool includes a "T"-shaped pressing rod and an inverted "U"-shaped pressing head. The pressing head is fixed at the lower end of the pressing rod, and a scale line is set at one end of the pressing rod close to the pressing head.

[0010] Furthermore, a pedal is fixed on the vertical section of the pressing rod.

[0011] Furthermore, the length of the vertical section of the pressing rod is 80 - 100 cm, which is the natural lowering height of a normal person and is conducive to personnel operation. The length of the vertical section of the pressing head is 5 - 7 cm, and the opening width is 3 - 5 cm, which is convenient for covering all the roots of the seedlings to be planted.

[0012] Furthermore, place the seedlings to be planted in step (1) on the moist sand layer, then hold the pressing rod and press the pressing head within 1 / 5 of the total root length with the main root tip of the seedlings to be planted facing upward, and continue to press until the root neck of the seedlings to be planted is pressed into the moist sand layer by 4 - 6 cm.

[0013] Advantages of the present invention: 1. The present invention provides a method for dry farming and planting Hedysarum laeve in the Mu Us Sandy Land. By using the method disclosed in the present invention to plant Hedysarum laeve, the survival rate in the current year reaches 88.9%, which improves the survival rate of Hedysarum laeve under dry farming conditions.

[0014] 2. The present invention provides a method for dry farming and planting Hedysarum laeve in the Mu Us Sandy Land. By using the seedling planting tool disclosed in the present invention to plant the seedlings to be planted, there is no need to dig pits, which saves time and effort and effectively improves the planting efficiency of Hedysarum laeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the seedling planting tool of the present invention.

[0017] Figure 2 It is a graph of the seedling survival rate of Embodiments 1-4 and Comparative Examples 1-7 of the present invention.

[0018] Figure 3 It is a graph of the number of branches of the plants of Embodiments 1-4 and Comparative Examples 1-7 of the present invention.

[0019] Figure 4 It is a graph of the crown width of the seedlings of Embodiments 1-4 and Comparative Examples 1-7 of the present invention.

[0020] Figure 5 It is a graph of the plant height of the seedlings of Embodiments 1-4 and Comparative Examples 1-7 of the present invention.

[0021] Pressure bar 1, pressure head 2, scale line 3, pedal 4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will further elaborate on the present invention through embodiments.

[0023] Embodiment 1: A method for dry farming and planting Hedysarum laeve in the Mu Us Sandy Land, which successively includes the following steps: (1) Seedling treatment: Select 1-year-old Hedysarum laeve bare-root seedlings with a ground diameter of 0.25 - 0.35 cm, and use tools such as branch shears and choppers to prune the Hedysarum laeve bare-root seedlings to obtain the seedlings to be planted with 10 cm of branch stubble and all roots retained; among them, the 1-year-old Hedysarum laeve bare-root seedlings are freshly collected seedlings from Etuokeqian Banner.

[0024] (2)Setting up sand barriers: Square grid sand barriers with a size of 2m×2m are set up in the middle of the windward slope of the sandy land. The above-ground part is 20 - 25 cm high, and the underground part is 20 - 25 cm long.

[0025] (3)Planting in sandy land: First, dip the roots of the seedlings to be planted in step (1) in mud and temporarily plant them in plots. The specific process of temporary planting includes the following steps: First, dig a temporary planting trench with a depth of 30 - 40 cm and a width of 20 - 30 cm on the temporary planting land. Then, place the seedlings to be planted at an angle of 40 - 50° in the temporary planting trench to make the roots spread out, which is beneficial for the roots to fully contact the soil. Finally, cover the soil. After that, plant them at the four corners inside the sand barriers in step (2) in April to obtain planted seedlings. The distance between the planted seedlings and the two adjacent sand barrier edges is 0.5 m, so that they can be protected by the sand barriers and do not affect the sand barriers during planting. The row spacing of the planted seedlings is 1m×1m.

[0026] The planting method includes: Remove the 5 - 10 cm thick dry sand layer on the sandy land for planting the seedlings to be planted, ensure that the roots of the planted seedlings are planted in the moist sandy soil, which improves their survival rate. Then, use a seedling planting tool to plant the roots of the seedlings to be planted in the stable moist sand layer, so that the root neck is 4 - 6 cm inside the moist sand layer.

[0027] The seedling planting tool includes a "T"-shaped pressing rod 1 and an inverted "U"-shaped pressing head 2. The pressing head 2 is fixed at the lower end of the pressing rod 1. A scale line 3 is set at one end of the pressing rod 1 close to the pressing head 2. A pedal 4 is fixed on the vertical section of the pressing rod 1. The length of the vertical section of the pressing rod 1 is 80 - 100 cm, which is the natural lowering height of a normal person and is conducive to personnel operation. The length of the vertical section of the pressing head 2 is 5 - 7 cm, and the opening width is 3 - 5 cm, which is convenient to cover all the roots of the seedlings to be planted.

[0028] Place the seedlings to be planted in step (1) on the moist sand layer. Then, hold the pressing rod 1 and press the pressing head 2 within 1 / 5 of the total root length with the root tip of the main root of the seedlings to be planted facing upward, and continue to press until the root neck of the seedlings to be planted is pressed into the moist sand layer by 4 - 6 cm.

[0029] Example 2: The overall method is the same as that of Example 1. The difference is that the 1-year-old Hedysarum laeve bare-root seedlings in step (1) are cold-stored seedlings from Hangjin Banner, and the cold-stored seedlings are 1-year-old Hedysarum laeve bare-root seedlings stored in a cold-air storage at 1 - 3°C.

[0030] Example 3: The overall method is the same as that of Example 1. The difference is that the 1-year-old Hedysarum laeve bare-root seedlings in step (1) are cold-stored seedlings from Etuokeqian Banner, and the cold-stored seedlings are 1-year-old Hedysarum laeve bare-root seedlings stored in a cold-air storage at 1 - 3°C.

[0031] Example 4: The overall method is the same as that of Example 3, except that the planting method includes: removing the dry sand layer on the sandy land for planting the seedlings to be planted, then digging a hole and planting the roots of the seedlings to be planted in the stable wet sand layer, making the root neck located 4-6 cm inside the wet sand layer, and finally burying it with wet sand.

[0032] Comparative Example 1: The overall method is the same as that of Example 3, except that the ground diameter of the 1-year-old Hedysarum laeve bare-root seedlings in step (1) is 0.15 - 0.25 cm.

[0033] Comparative Example 2: The overall method is the same as that of Example 3, except that the ground diameter of the 1-year-old Hedysarum laeve bare-root seedlings in step (1) is more than 0.35 cm.

[0034] Comparative Example 3: The overall method is the same as that of Example 3, except that in step (2), a sand barrier is set at the top of the windward slope of the sandy land.

[0035] Comparative Example 4: The overall method is the same as that of Example 3, except that in step (2), a sand barrier is set at the bottom of the windward slope of the sandy land.

[0036] Comparative Example 5: The overall method is the same as that of Example 3, except that in step (3), it is planted in May.

[0037] Comparative Example 6: The overall method is the same as that of Example 3, except that in step (3), it is planted in June.

[0038] Comparative Example 7: The overall method is the same as that of Example 3, except that the planting method includes: directly digging a hole in the dry sand layer, then planting the roots of the seedlings to be planted in the hole, making the root neck located 4-6 cm inside the dry soil layer, and finally burying it with dry sand.

[0039] Experiment: The experiment was carried out in 2024. The planting experiments were respectively carried out on the methods of Examples 1-4 and Comparative Examples 1-7. Each planting method was set with 3 replicates, and each replicate had 200 plants. On August 21, 2024, the survival rate of the seedlings, the number of branches of the plants, the crown width and the plant height were investigated on the spot. The detailed results are shown in Figures 2 - 5 .

[0040] From Figure 2 It can be seen that the survival rate of Hedysarum laeve in Example 3 is the highest, which is 88.9%, followed by Example 1, with a survival rate of 83.3%. The lowest survival rate is in Comparative Example 6, which is 37%.

[0041] From Figure 3 It can be seen that the Hedysarum laeve with the most branches is in Example 3, which is 2.2, followed by Example 2, which is 1.8, and the least is in Comparative Example 3, which is 1.

[0042] From Figure 4 It can be seen that in Comparative Example 2, the crown width of Populus davidiana×P. bolleana is the largest, which is 0.18 m². Followed by Comparative Example 8, the crown width is 0.15 m², and the smallest is Comparative Example 7, which is 0.04 m². The crown widths of Examples 1-4 are 0.09-0.11 m².

[0043] From Figure 5 It can be seen that compared with other examples and comparative examples, the plant height of Populus davidiana×P. bolleana in Example 4 is the highest, which is 21.7 cm. Followed by Example 3, the plant height is 20.9 cm, and the lowest is Comparative Example 6, with a plant height of 9 cm.

[0044] The above are the preferred embodiments of the present invention. For those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for planting sheep firewood in dry farming in Maowusu sandy land, characterized in that: It includes the following steps in sequence: (1) Seedling treatment: Select one-year-old bare-root seedlings of Psoralea corylifolia with a ground diameter of 0.25 to 0.35 cm, and use tools such as pruning shears and shears to obtain seedlings to be planted with branches of 10 cm and all roots retained; (2) Setting up sand barriers: A 2m×2m square grid sand barrier is set up on the windward slope of the sandy land, with the above-ground part being 20-25cm high and the underground part being 20-25cm long; (3) Planting in sand: Plant the seedlings to be planted in step (1) at the four corners of the sand barrier in step (2) in April to obtain planted seedlings, wherein the distance between the planted seedlings and the two adjacent edges of the sand barrier is 0.5 m, and the plant spacing of the planted seedlings is 1 m × 1 m; The planting method includes: removing the dry sand layer on the sandy land for planting the seedlings to be planted, and then using a seedling planting tool to plant the roots of the seedlings to be planted in a stable wet sand layer, so that the root neck is located 4-6 cm in the wet sand layer.

2. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 1, characterized in that: The one-year-old bare-root seedlings of Psoralea corylifolia in step (1) are freshly harvested seedlings and / or refrigerated seedlings.

3. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 2, characterized in that: Refrigerated seedlings are one-year-old bare-root seedlings of sheep firewood stored in an air-cooled cold storage at 1 to 3°C.

4. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 1, characterized in that: Before the seedlings to be planted in step (1) are planted in the sand in step (3), their roots need to be dipped in mud and transplanted in different plots. The specific transplanting process includes the following steps: first, digging a transplanting trench with a depth of 30-40 cm and a width of 20-30 cm on the transplanting ground, then placing the seedlings to be planted in the transplanting trench at an angle of 40-50 degrees, and finally covering with soil.

5. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 1, characterized in that: The seedling planting tool comprises a "T"-shaped pressure rod and an inverted "U"-shaped pressure head, the pressure head is fixed at the lower end of the pressure rod, and a scale line is arranged at one end of the pressure rod close to the pressure head.

6. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 5, characterized in that: A pedal is fixed on the vertical section of the pressure rod.

7. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 6, characterized in that: The vertical section length of the pressure rod is 80-100 cm, the vertical section length of the pressure head is 5-7 cm, and the opening width is 3-5 cm.

8. The method for planting sheep firewood in dryland of Maowusu Sandy Land according to claim 7, characterized in that: Place the seedlings to be planted in step (1) on a wet sandy soil layer, then hold the pressure rod and press the pressure head within 1 / 5 of the total root length of the main root of the seedlings to be planted, and continue to press down until the root neck of the seedlings to be planted is pressed 4-6 cm into the wet sandy soil layer.

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