A method for raising haloxylon ammodendron

Abstract

This invention discloses a method for cultivating Haloxylon ammodendron seedlings, specifically including the following steps: (1) nursery site selection and land preparation; (2) seed treatment; (3) sowing and irrigation; (4) seedling tending and management; (5) disease prevention and control; (6) germination; and (7) transplanting. This invention treats Haloxylon ammodendron seeds collected in autumn and winter before sowing in spring, significantly improving the germination rate. Furthermore, the seedlings sown in spring are uniform, vigorous, and germinate early, exhibiting strong drought and disease resistance, and are better able to cope with soil moisture conditions.

Description

Technical Field

[0001] This invention relates to the field of planting technology, and more specifically to a method for cultivating Haloxylon ammodendron seedlings. Background Technology

[0002] Haloxylon ammodendron (CA Mey.) Bunge is a shrub or small tree belonging to the genus Haloxylon in the family Amaranthaceae. Its bark is grayish-white, and its wood is hard and brittle. Older branches are grayish-brown or pale yellowish-brown, often with annular fissures. Current-year branches are slender, ascending, or drooping. Leaves are scale-like, broadly triangular, slightly spreading, with a blunt apex and no awn. Bracteoles are boat-shaped, nearly equal in length to the perianth, with membranous margins. Perianth segments are oblong with a blunt apex, and the upper part of the perianth segments' wings is slightly incurved and clasps the fruit. The pods are yellowish-brown with black seeds. Flowering occurs from May to July, and fruiting from September to October.

[0003] Haloxylon ammodendron is drought-resistant, heat-resistant, cold-resistant, and salt-tolerant. It prefers sunlight and does not tolerate shade. It is highly adaptable, grows rapidly, has dense branches, and a well-developed root system. Haloxylon ammodendron reproduces by seed.

[0004] Haloxylon ammodendron is cold-resistant, drought-resistant, salt-alkali-resistant, and wind-blown sand-resistant. It can not only curb desertification, improve soil, and restore vegetation, but also protect surrounding desertified grasslands, playing an unparalleled role in maintaining ecological balance. It is an important sand-fixing plant in temperate deserts. The roots of Haloxylon ammodendron are parasitic with Cistanche deserticola, a traditional and rare tonic in Chinese medicine, which has high medicinal value and is known as "desert ginseng." Haloxylon ammodendron wood is hard, heavy, and brittle, burns with extremely high heat and produces very little smoke, and is known as "sand coal," a high-quality fuel in Haloxylon ammodendron producing areas.

[0005] However, current seedling cultivation methods for Haloxylon ammodendron have low germination rates and poor drought and disease resistance.

[0006] Therefore, how to improve the emergence rate, drought resistance, and disease resistance of Haloxylon ammodendron is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide a method for cultivating Haloxylon ammodendron seedlings to overcome the shortcomings of the prior art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A method for cultivating Haloxylon ammodendron seedlings specifically includes the following steps:

[0010] (1) Nursery site selection and land preparation

[0011] Choose well-drained sandy soil or light sandy loam as the nursery site; before sowing, spread a small amount of base fertilizer and then plow deeply, apply short-acting herbicide and then rake level, remove weed roots, and irrigate thoroughly.

[0012] (2) Seed treatment

[0013] Select Haloxylon ammodendron seeds that are harvested from healthy Haloxylon ammodendron mother trees in the previous autumn and winter, are round and plump, have few impurities, a purity of over 85%, and a germination rate of over 90%. Soak the seeds in potassium permanganate solution or copper sulfate solution, drain them, mix them with sand, and you will get the treated Haloxylon ammodendron seeds for later use.

[0014] (3) Sowing and irrigation

[0015] Trench seedling raising: In April of the following year, fill the leveled small plots with water. When the water level drops and the soil is half dry, sow the seeds in furrows. Evenly scatter the treated Haloxylon ammodendron seeds in the furrows, and then cover them with soil-free sand. After sowing, irrigate slowly and lightly.

[0016] Alternatively, seedbed seedling raising: In April of the following year, first irrigate the leveled seedbed with sufficient water. When the water level drops but the soil surface is still moist, loosen the soil on the seedbed surface and sow the seeds evenly. Then cover with soil-free sand. After sowing, irrigate slowly and lightly.

[0017] (4) Seedling tending and management

[0018] After sowing, cover the seedlings with straw in time during windy early spring, irrigate as needed, loosen the soil and remove weeds in time, and thin out the seedlings.

[0019] (5) Disease prevention and control

[0020] When controlling powdery mildew, spray lime sulfur or triadimefon during the disease period; when controlling root rot of Haloxylon ammodendron, first remove dead seedlings, then drench the roots with ferrous sulfate solution or root rot control solution, or spray with potassium permanganate solution or Bordeaux mixture.

[0021] (6) Emergence

[0022] Keep the root system of the Haloxylon ammodendron intact when lifting the seedlings;

[0023] (7) Implantation

[0024] Choose a cool, loose, moist, well-drained and well-aerated sandy or sandy loam soil. Dig planting trenches for temporary planting, burying the roots of the seedlings completely in the moist sandy or sandy loam soil, tamping it down, ensuring that the roots are not exposed and that there is no air leakage. Arrange the seedlings neatly, one row on top of the other, and ensure that each row of temporary plants is the same type.

[0025] Furthermore, in step (1) above, for nurseries with good irrigation conditions, seedbeds are preferred for seedling cultivation; for nurseries with poor irrigation conditions and little rainfall, trench seedling cultivation is sufficient.

[0026] The beneficial effect of adopting the above-mentioned further technical solutions is that Haloxylon ammodendron is not demanding in terms of soil requirements. Well-aerated sandy soil or light sandy loam is most suitable. Seedlings should not be raised in poorly aerated clay soil, heavily saline-alkali land, or poorly drained low-lying wetlands. Furthermore, seedlings should not be raised in areas where Haloxylon ammodendron was continuously planted the previous year (at least a 3-year interval between planting crops is required before raising Haloxylon ammodendron seedlings). Applying short-acting herbicides is to eliminate the weed roots in the soil.

[0027] Furthermore, in step (2) above, the autumn and winter seasons are mid-to-late October; the mass percentages of potassium permanganate aqueous solution and copper sulfate aqueous solution are both 0.1%-0.3%; and the soaking time is 30 minutes.

[0028] The beneficial effect of adopting the above-mentioned further technical solutions is that soaking seeds in potassium permanganate solution or copper sulfate solution can effectively prevent the occurrence of Haloxylon ammodendron root rot and powdery mildew.

[0029] Furthermore, in step (3) above, during the process of trenching and seedling raising, the trenching and row sowing should be carried out in an east-west or north-south direction according to the terrain; the row spacing for trenching and row sowing should be 14-16cm, the trench depth should be 3-5cm, and the sowing width should be 10-15cm; the sowing amount of Haloxylon ammodendron seeds should be 20-25kg / mu; the covering thickness of the soilless sand should be 0.5-1cm, or the covering should be so thick that the seeds are barely visible; if the soil crust becomes compacted into small pieces after the water dries up, and the seedlings are crushed, it is necessary to manually roll the compacted soil with a roller to release the seedlings until all the seedlings emerge. If the seedlings do not emerge evenly, replanting should be carried out as soon as possible; the frequency of thin irrigation should be once every 1.5-2 months, and large-scale irrigation should be avoided; June-July is the period of rapid growth of seedlings, and management should be strengthened; if the seedlings are not taken out of the nursery in autumn, sufficient winter water should be irrigated before and after the soil freezes in November.

[0030] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: In Urad Rear Banner, the sowing period is in April. Early sowing prevents the soil temperature from rising, while late sowing will cause seedlings to die from sunburn, and strong winds will also affect the germination rate. Depending on the terrain, ditches can be dug east-west or north-south. This is because uneven terrain ensures rapid drainage and prevents waterlogging in the Haloxylon ammodendron nursery. Haloxylon ammodendron seedlings with few branches, well-developed taproots, and long, robust growth have a high survival rate. To achieve this, dense sowing is necessary, generally using 20-25 kg of seeds per mu (approximately 0.067 hectares), yielding 70,000-100,000 seedlings per mu. The sand covering should not be too thick, otherwise it will affect the germination of the Haloxylon ammodendron. Haloxylon ammodendron does not like water; therefore, light irrigation can be applied every 1.5-2 months as needed, but large-scale irrigation or waterlogging of the seedbed should be avoided.

[0031] Furthermore, in step (3) above, during the seedbed cultivation process, the width of the seedbed is 30-40cm and the height is 5cm; after loosening the surface soil of the seedbed with a wire rake, the seeds are sown evenly, and the seeds are gently pressed into the soil by hand; the soil-free sand should just cover the Haloxylon ammodendron seeds; if the soil crust becomes small and compacted after the water dries, resulting in the seedlings being crushed, the compacted soil crust needs to be crushed by hand with a roller to release the seedlings until all seedlings emerge. If the seedlings do not emerge evenly, replanting should be carried out as soon as possible; the frequency of light irrigation is once every 1.5-2 months, and water accumulation in the seedbed should be avoided; June-July is the period of rapid growth of seedlings, and management should be strengthened; if the seedlings are not taken out of the nursery in autumn, winter water should be applied before and after the soil freezes in November.

[0032] The beneficial effect of adopting the above-mentioned further technical solutions is that the size of the seedbed depends on the flatness of the land, and is generally 30-40cm wide and 5cm high, and should not be too large.

[0033] Furthermore, in step (4) above, watering is done by micro-sprinkler irrigation; when the seedlings are 5-10cm tall, the soil is loosened and weeds are removed in time; the thinning operation is as follows: thinning is done once in late May or early June, and the number of seedlings retained per unit area is 15% more than the planned seedling production. The second and third thinning is carried out according to the seedling growth. For row sowing, 800-1000 seedlings are evenly retained 1m above the sowing row, and the seedling spacing is maintained at 3-6cm. The seedling production is controlled at 80,000-100,000 plants / mu.

[0034] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: After sowing, in the windy early spring, it is necessary to promptly cover the seedbed with straw to prevent wind erosion and surface dryness. The seedbed should be kept moist, and watering can be applied as needed depending on the soil's dryness. Micro-sprinkler irrigation is preferred for watering, as it can improve the emergence and survival rate of Haloxylon ammodendron. When the seedlings are 5-10cm tall, the soil should be loosened and weeds removed promptly (weeding seedlings below this height will pull them out along with the seedlings, and tall weeds will also affect seedling growth), keeping the topsoil loose, well-aerated, and weed-free. The frequency of loosening the soil should not be excessive to avoid wind erosion of the loose topsoil. At the same time, attention should be paid to preventing the occurrence of diseases and pests.

[0035] Furthermore, in step (5) above, the frequency of using lime sulfur mixture or powdered rust inhibitor is once every 7 days starting from early July, for a total of 3-4 times; the mass percentage of ferrous sulfate aqueous solution is 1%-3%; the mass percentage of root rot inhibitor solution is 5%; the mass percentage of potassium permanganate aqueous solution is 5%; the dilution ratio of Bordeaux mixture is 200 times; the frequency of root irrigation is once in late June, once in early July, and once in late July.

[0036] The beneficial effect of adopting the above-mentioned further technical solutions is that powdery mildew and root rot are the main diseases that occur in Haloxylon ammodendron during its growing season, leading to seedling death. Powdery mildew manifests as whitening of diseased branches, followed by the appearance of a powdery coating. Root rot occurs because the nursery bed is damp or compacted, with excessive irrigation or rainfall, but without timely drainage and proper aeration, causing the roots to rot and turn black, ultimately leading to the death of the entire plant.

[0037] Furthermore, in step (6) above, the root length of the Haloxylon ammodendron is more than 30cm and the root spread is more than 20cm.

[0038] The beneficial effect of adopting the above-mentioned further technical solutions is that the survival rate of Haloxylon ammodendron seedlings used for afforestation is relatively high. The older the seedlings, the lower the survival rate. In order to improve the survival rate of afforestation, the root system should be kept as intact as possible when lifting the seedlings, with a root length of more than 30cm and a root spread of more than 20cm. Haloxylon ammodendron seedlings have brittle roots that are easily broken, so care should be taken when lifting them to avoid damaging the roots as much as possible.

[0039] Furthermore, in step (7) above, the depth of the false planting trench is 30-40cm.

[0040] The beneficial effect of adopting the above-mentioned further technical solution is that, in order to facilitate the counting of seedlings before they leave the nursery, each row of pseudo-plants needs to be identical.

[0041] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows:

[0042] This invention involves treating Haloxylon ammodendron seeds collected in autumn and winter before sowing them in spring, which significantly improves the seed germination rate. The seedlings sown in spring are uniform, vigorous, and germinate earlier, exhibiting stronger drought and disease resistance, and are better able to cope with soil moisture conditions. Detailed Implementation

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0044] The seedling cultivation method for Haloxylon ammodendron includes the following steps:

[0045] (1) Nursery site selection and land preparation

[0046] Choose well-drained sandy soil as the nursery site; before sowing, spread a small amount of base fertilizer and then plow deeply, apply short-acting herbicide and then rake the soil level, remove weed roots, prepare a small plot of land of 0.1 mu, and irrigate it thoroughly.

[0047] (2) Seed treatment

[0048] Select Haloxylon ammodendron seeds harvested from healthy mother trees in mid-October of the previous autumn / winter season. The seeds should be round and plump, with few impurities, a purity of over 85%, and a germination rate of over 90%. Soak the seeds in a 0.1% potassium permanganate solution for 30 minutes. After soaking, drain and mix with sand to obtain the treated Haloxylon ammodendron seeds for later use.

[0049] (3) Sowing and irrigation

[0050] Seedling raising in furrows: In April of the following year, fill the leveled plots with water. When the water level drops and the soil is semi-dry, sow the seeds in east-west furrows according to the terrain. The row spacing is 14cm, the furrow depth is 3cm, and the sowing width is 10cm. Evenly scatter the treated Haloxylon ammodendron seeds in the furrows at a rate of 20kg / mu, yielding 70,000 seedlings / mu. Then cover with a 0.5cm layer of soilless sand. After sowing, irrigate slowly and lightly. If the soil crusts up after the water dries, causing seedlings to be crushed, manually roll the crust with a roller to release the seedlings until all seedlings have emerged. If seedlings emerge unevenly, replant as soon as possible. Irrigate lightly every 1.5 months thereafter, avoiding flooding. June and July are the rapid growth period for seedlings, so management should be strengthened. If the seedlings are not transplanted in autumn, irrigate thoroughly before and after the soil freezes in November.

[0051] (4) Seedling tending and management

[0052] After sowing, cover the seedlings with straw in time during windy early spring, and spray water as needed. When the seedlings are 5cm tall, loosen the soil and remove weeds in time to keep the topsoil loose, well-aerated, and weed-free. Thin the seedlings once in late May, leaving 15% more seedlings per unit area than the planned yield. Make a second and third thinning based on the seedling growth. For row sowing, leave 800 seedlings evenly per 1m in the sowing row, keep the seedling spacing at 6cm, and control the yield to 80,000 seedlings per mu.

[0053] (5) Disease prevention and control

[0054] To control powdery mildew, spray lime sulfur solution once every 7 days starting in early July during the disease period, for a total of 3 sprays. To control root rot of Haloxylon ammodendron, first remove dead seedlings, then drench the roots with a 1% ferrous sulfate solution, once in late June, once in early July, and once in late July.

[0055] (6) Emergence

[0056] When lifting seedlings, keep the root system of Haloxylon ammodendron intact, with a root length of more than 30cm and a root spread of more than 20cm;

[0057] (7) Implantation

[0058] Choose a cool, loose, moist, well-drained and well-aerated sandy soil. Dig a planting trench 30cm deep for temporary planting. Bury the roots of the seedlings completely in the moist sand, tamp it down, and make sure the roots are not exposed or exposed to air. Arrange the seedlings neatly, one row on top of the other, and make sure that each row of temporary plantings is the same type of tree. Example 2

[0059] The seedling cultivation method for Haloxylon ammodendron includes the following steps:

[0060] (1) Nursery site selection and land preparation

[0061] Choose well-drained sandy soil as the nursery site; before sowing, spread a small amount of base fertilizer and then plow deeply, apply short-acting herbicide and then rake the soil level, remove weed roots, prepare a small plot of land of 0.1 mu, and irrigate it thoroughly.

[0062] (2) Seed treatment

[0063] Select Haloxylon ammodendron seeds harvested from healthy mother trees in late October of the previous autumn / winter season. These seeds should be round, plump, have few impurities, a purity of over 85%, and a germination rate of over 90%. Soak the seeds in a 0.3% potassium permanganate solution for 30 minutes. After soaking, drain and mix with sand to obtain the treated Haloxylon ammodendron seeds for later use.

[0064] (3) Sowing and irrigation

[0065] Trench seedling raising: In April of the following year, fill the leveled plots with water. When the water level drops and the soil is semi-dry, sow in east-west trenches according to the terrain, with a row spacing of 15cm, a trench depth of 4cm, and a sowing width of 12cm. Evenly scatter the treated Haloxylon ammodendron seeds in the trenches at a rate of 22kg / mu, yielding 80,000 seedlings / mu. Then cover with a 1cm layer of soilless sand. Irrigate slowly and lightly after sowing. If the soil crusts up after the water dries, causing seedlings to be crushed, manually roll the crust with a roller to release the seedlings until all seedlings emerge. If seedlings emerge unevenly, replant as soon as possible. Irrigate lightly every two months thereafter, avoiding flooding. June and July are the rapid growth period for seedlings, so management should be strengthened. If the seedlings are not transplanted in autumn, irrigate thoroughly before and after the soil freezes in November.

[0066] (4) Seedling tending and management

[0067] After sowing, cover the seedlings with straw in time during windy early spring, and spray water as needed. When the seedlings are 8cm tall, loosen the soil and remove weeds in time to keep the topsoil loose, well-aerated, and weed-free. Thin the seedlings once in late May, leaving 15% more seedlings per unit area than the planned yield. Make a second and third thinning based on the seedling growth. For row sowing, leave 900 seedlings evenly per 1m in the sowing row, keep the seedling spacing at 5cm, and control the yield to 90,000 seedlings per mu.

[0068] (5) Disease prevention and control

[0069] To control powdery mildew, spray lime sulfur mixture once every 7 days starting in early July during the disease period, for a total of 3 sprays. To control root rot of Haloxylon ammodendron, first remove dead seedlings, then drench the roots with a 5% root rot control solution once in late June, once in early July, and once in late July.

[0070] (6) Emergence

[0071] When lifting seedlings, keep the root system of Haloxylon ammodendron intact, with a root length of more than 30cm and a root spread of more than 20cm;

[0072] (7) Implantation

[0073] Choose a cool, loose, moist, well-drained and well-aerated sandy soil. Dig a planting trench 35cm deep for temporary planting. Bury the roots of the seedlings completely in the moist sand, tamp it down, and make sure the roots are not exposed or exposed to air. Arrange the seedlings neatly, one row on top of the other, and make sure that each row of temporary plantings is the same type of tree. Example 3

[0074] The seedling cultivation method for Haloxylon ammodendron includes the following steps:

[0075] (1) Nursery site selection and land preparation

[0076] Choose well-drained light sandy loam soil as the nursery site; before sowing, spread a small amount of base fertilizer and then plow deeply, apply short-acting herbicide and then rake level, remove weed roots, prepare a small plot of land of 0.1 mu, and irrigate it thoroughly.

[0077] (2) Seed treatment

[0078] Select Haloxylon ammodendron seeds harvested from healthy mother trees in late October of the previous autumn / winter season. These seeds should be round, plump, have few impurities, a purity of over 85%, and a germination rate of over 90%. Soak the seeds in a 0.3% copper sulfate solution for 30 minutes. After soaking, drain and mix with sand to obtain the treated Haloxylon ammodendron seeds for later use.

[0079] (3) Sowing and irrigation

[0080] Seedbed cultivation: In April of the following year, prepare seedbeds 30cm wide and 5cm high. First, thoroughly water the leveled seedbed. When the water level drops but the soil surface is still moist, loosen the surface soil with a wire rake and evenly sow the seeds. Gently press the seeds into the soil with your palm, then cover with loose sand, just enough to cover the seeds. After sowing, irrigate slowly and lightly. If the soil crusts up after the water dries, causing seedlings to be crushed, manually use a roller to break up the crust and release the seedlings until all seedlings have emerged. If emergence is uneven, replant as soon as possible. Irrigate lightly every 1.5 months thereafter, avoiding waterlogging. June and July are the rapid growth period for seedlings, requiring strengthened management. If seedlings are not transplanted in autumn, irrigate thoroughly before and after the soil freezes in November.

[0081] (4) Seedling tending and management

[0082] After sowing, cover the seedlings with straw in time during windy early spring, and spray water as needed. When the seedlings are 10cm tall, loosen the soil and remove weeds in time to keep the topsoil loose, well-aerated, and weed-free. Thin the seedlings once in early June, leaving 15% more seedlings per unit area than the planned yield. Make a second and third thinning based on the seedling growth. For row sowing, leave 1,000 seedlings evenly per 1m in the sowing row, keep the seedling spacing at 3cm, and control the yield to 100,000 seedlings per mu.

[0083] (5) Disease prevention and control

[0084] To control powdery mildew, spray with carbendazim every 7 days starting in early July during the disease period, for a total of 4 times. To control root rot of Haloxylon ammodendron, first remove dead seedlings, and then spray with a 5% potassium permanganate solution.

[0085] (6) Emergence

[0086] When lifting seedlings, keep the root system of Haloxylon ammodendron intact, with a root length of more than 30cm and a root spread of more than 20cm;

[0087] (7) Implantation

[0088] Choose a cool, loose, moist, well-drained and well-aerated sandy loam soil. Dig a planting trench 40cm deep for temporary planting. Bury the roots of the seedlings completely in the sandy loam soil, tamp it down, and make sure the roots are not exposed or exposed to air. Arrange the seedlings neatly, one row on top of the other, and make sure that each row of temporary plantings is the same type of tree.

[0089] In 2022, seedling cultivation experiments of Haloxylon ammodendron were conducted in an experimental field in Urad Rear Banner, Bayannur City, Inner Mongolia Autonomous Region, using both the methods described in Examples 1-3 and conventional methods. The germination rate, seedling height, drought resistance, and disease resistance of Haloxylon ammodendron were investigated, and average values ​​were taken. The results are shown in Table 1.

[0090] Table 1. Germination rate, seedling height, drought resistance, and disease resistance of Haloxylon ammodendron seedlings in Examples 1-3

[0091] Seedling raising methods Emergence rate / % Seedling height / cm drought resistance Disease resistance conventional methods 95.2 8.9 powerful powerful Example 1 95.8 9.2 powerful powerful Example 2 95.5 9.1 powerful powerful Example 3 79.4 7.5 weak weak

[0092] As shown in Table 1, the emergence rate, seedling height, drought resistance and disease resistance of Haloxylon ammodendron seedlings in Examples 1-3 were significantly higher than those of conventional methods.

[0093] The above experiments show that the present invention, by treating the seeds of Haloxylon ammodendron collected in autumn and winter and then sowing them in spring, significantly improves the seed germination rate. Furthermore, the seedlings after spring sowing are uniform, vigorous, and germinate earlier, with stronger drought and disease resistance, and can better cope with soil moisture conditions.

[0094] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for raising Haloxylon ammodendron seedlings, characterized in that, Specifically, the following steps are included: (1) Nursery site selection and land preparation Choose well-drained sandy soil or light sandy loam as the nursery site; before sowing, spread a small amount of base fertilizer and then plow deeply, apply short-acting herbicide and then rake level, remove weed roots, and irrigate thoroughly. (2) Seed treatment Select Haloxylon ammodendron seeds that are harvested from healthy Haloxylon ammodendron mother trees in the previous autumn and winter, are round and plump, have few impurities, a purity of over 85%, and a germination rate of over 90%. Soak the seeds in potassium permanganate solution or copper sulfate solution, drain them, mix them with sand, and you will get the treated Haloxylon ammodendron seeds for later use. The autumn / winter season is from mid to late October; the mass percentages of the potassium permanganate aqueous solution and the copper sulfate aqueous solution are both 0.1%-0.3%; the soaking time is 30 minutes. (3) Sowing and irrigation Trench seedling raising: In April of the following year, fill the leveled small plots with water. When the water level drops and the soil is half dry, sow the seeds in furrows. Evenly scatter the treated Haloxylon ammodendron seeds in the furrows, and then cover them with soil-free sand. After sowing, irrigate slowly and lightly. During the trenching and seedling raising process, depending on the terrain, the trenching and row sowing can be done in east-west or north-south directions; the row spacing for trenching and row sowing is 14-16cm, the trench depth is 3-5cm, and the sowing width is 10-15cm; the sowing rate of Haloxylon ammodendron seeds is 20-25kg / mu; the soilless sand covering thickness is 0.5-1cm, or covering until the seeds are barely visible; if the soil crust hardens into small clumps after drying, causing seedlings to be crushed, it is necessary to manually roll and crush the crust with a roller to release the seedlings until all seedlings emerge. If the seedlings emerge unevenly, replanting should be done as soon as possible; the frequency of light irrigation is once every 1.5-2 months, and flood irrigation should be avoided; June and July are the rapid growth period for seedlings, and management should be strengthened; if the seedlings are not taken out of the nursery in autumn, sufficient winter water should be applied before and after the soil freezes in November; Alternatively, seedbed seedling raising: In April of the following year, first irrigate the leveled seedbed with sufficient water. When the water level drops but the soil surface is still moist, loosen the soil on the seedbed surface and sow the seeds evenly. Then cover with soil-free sand. After sowing, irrigate slowly and lightly. During the seedbed cultivation process, the seedbed should be 30-40cm wide and 5cm high. Loosen the surface soil of the seedbed with a wire rake before evenly sowing the seeds, and then gently press the seeds into the soil with your palm. The amount of soil-free sand should just cover the Haloxylon ammodendron seeds. If the soil crust hardens into small clumps after drying, causing seedlings to be crushed, manually roll the crust with a roller to release the seedlings until all seedlings have emerged. If seedlings emerge unevenly, replant as soon as possible. Irrigate lightly every 1.5-2 months, avoiding waterlogging in the seedbed. June and July are the rapid growth period for seedlings, requiring enhanced management. If seedlings are not transplanted in autumn, irrigate thoroughly before and after the soil freezes in November. (4) Seedling tending and management After sowing, cover the seedlings with straw in time during windy early spring, irrigate as needed, loosen the soil and remove weeds in time, and thin out the seedlings. The irrigation is carried out using micro-sprinkler irrigation; when the seedlings are 5-10cm tall, the soil is loosened and weeds are removed in time; the thinning operation is as follows: thinning is carried out once in late May or early June, and the number of seedlings retained per unit area is 15% more than the planned seedling yield. The second and third thinning are carried out according to the seedling growth. For row sowing, 800-1000 seedlings are evenly left per 1m of the sowing row, and the seedling spacing is maintained at 3-6cm. The seedling yield is controlled at 80,000-100,000 seedlings per mu. (5) Disease prevention and control When controlling powdery mildew, spray lime sulfur or triadimefon during the disease period; when controlling root rot of Haloxylon ammodendron, first remove dead seedlings, then drench the roots with ferrous sulfate solution or root rot control solution, or spray with potassium permanganate solution or Bordeaux mixture. The application frequency of the lime sulfur mixture or powdered rust inhibitor is once every 7 days starting from early July, for 3-4 consecutive sprays; the mass percentage of the ferrous sulfate aqueous solution is 1%-3%; the mass percentage of the root rot inhibitor solution is 5%; the mass percentage of the potassium permanganate aqueous solution is 5%; the dilution ratio of the Bordeaux mixture is 200 times; the frequency of root drenching is once in late June, once in early July, and once in late July; (6) Emergence Keep the root system of the Haloxylon ammodendron intact when lifting the seedlings; (7) Implantation Choose a cool, loose, moist, well-drained and well-aerated sandy or sandy loam soil. Dig planting trenches for temporary planting, burying the roots of the seedlings completely in the moist sandy or sandy loam soil, tamping it down, ensuring that the roots are not exposed and that there is no air leakage. Arrange the seedlings neatly, one row on top of the other, and ensure that each row of temporary plants is the same type.

2. The method for raising seedlings of Haloxylon ammodendron according to claim 1, characterized in that, In step (1), for nurseries with good irrigation conditions, seedbeds are preferred for seedling cultivation; for nurseries with poor irrigation conditions and little rainfall, trench seedling cultivation is sufficient.

3. The method for raising seedlings of Haloxylon ammodendron according to claim 1, characterized in that, In step (6), the root length of the Haloxylon ammodendron is more than 30cm and the root width is more than 20cm.

4. The method for raising seedlings of Haloxylon ammodendron according to claim 1, characterized in that, In step (7), the depth of the artificial planting trench is 30-40cm.