CN114747435A

CN114747435A - Arid region side slope herbaceous plant snow moisture sowing method

Info

Publication number: CN114747435A
Application number: CN202210446545.XA
Authority: CN
Inventors: 宋春武; 徐新文; 蒋进; 王立新
Original assignee: Xinjiang Institute of Ecology and Geography of CAS
Current assignee: Xinjiang Institute of Ecology and Geography of CAS
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-15
Anticipated expiration: 2042-04-26
Also published as: ZA202205967B; CN114747435B

Abstract

The invention discloses a snow moisture sowing method for herbaceous plants on side slopes in arid regions, which belongs to the technical field of desertification control, and comprises the steps of collecting capsules with plump seeds and good maturity on withered plants in the complete maturity stage of Lepidium sambuciformis and Lepidium sambuciformis, respectively obtaining clean Lepidium sambuciformis seeds and clean Lepidium sambuciformis seeds, and storing for later use; finishing the soil on the slope surface of the side slope; uniformly mixing the clean Leaman pitaya seeds and the clean Lepidium samarangense seeds to obtain mixed seeds, mixing the mixed seeds with dry fine sandy soil, and uniformly stirring to obtain mixed seed soil; adding clear water into the mixed seed soil to obtain wet seed soil; sowing the wetted seed soil; covering the slope surface with a straw curtain and fixing; after heavy snow falls in winter, uniformly spreading the snow on the flat ground above the slope surface onto a slope surface straw curtain, and lightly pressing and smoothing; in spring of the next year, the grass curtain is removed after the grass seeds germinate. The invention creates conditions for the successful establishment and planting of plants on the side slope of the arid region, so as to realize the continuity of water and soil conservation of the side slope of the arid region.

Description

Arid region side slope herbaceous plant snow moisture sowing method

Technical Field

The invention relates to the technical field of desertification control, in particular to a method for sowing herbaceous plants on side slopes in arid regions in a snow moisture mode.

Background

In recent years, due to the large-scale construction of diversion main canals, high-grade roads and railways, a large number of slopes are required to be excavated and filled frequently. The phenomena of scouring erosion, sand blown erosion, water and soil loss and shallow local landslide commonly exist in a plurality of bare slopes. Taking the slope of the water supply channel of Clarity as an example, the observation and research of 20 years of slope protection by engineering measures shows that the natural recovery of the vegetation on the slope cannot be realized only by the measures of the engineering concrete grid beams and the natural recovery, but serious wind erosion and desertification occur, and the phenomena of water and soil loss and slope collapse caused by the erosion of snow melt, flood and summer rainstorm occur.

The side slope in the arid region has less case of successful construction of artificial vegetation due to the influence of severe environmental conditions such as less regional rainfall, more salinization and desertification of soil, more wind (easily causing surface soil to air dry and influencing seed germination) in early spring planting season, and the like, and the existing artificial vegetation construction method comprises the following steps: grass seeds are sown and planted based on the technique of irrigating, and the grass seeds comprise Poa, Festuca, Agropyron, Lolium, Cynodon, and the like; based on the grass and shrub species sowing technology under the low irrigation condition, the grass and shrub species comprise halophytic grass, alkali broom cypress fruit, artemisia desertorum, stipa glauca, chenopodium camellii, siberian nitraria etc. The arid region side slope artificial vegetation construction technology based on the species has the following defects: 1) based on the grass seed sowing and planting technology under the irrigation condition, a certain amount of pre-irrigation and multiple pre-irrigation are needed to ensure the normal germination and growth of seeds. However, in many arid and semiarid desert regions, no irrigation condition exists when the engineering side slope passes through the region, water sources are lacked in the spring planting period, and artificial grass planting and tree planting are difficult; 2) based on the grass and shrub species sowing technology under the low irrigation condition, the method does not need too much irrigation, but the species grow slowly in the early stage, the coverage of surface vegetation is low, and the water and soil loss is serious on the slope terrain in the snow melting period in spring and the rainstorm period in summer.

Disclosure of Invention

Aiming at the problems, the invention provides a method for sowing herbaceous plants on side slopes in arid regions in a soil-moisture manner. The method is completed by the steps of seed collection and storage, slope surface arrangement, artificial sowing, grass curtain and snow covering and the like, and the method fully utilizes natural resources of the desert to accumulate technical reserve for vegetation on engineering side slopes in arid regions. The method creates conditions for the successful planting of the plants on the side slope of the arid region by collecting the wild grass seeds suitable for the side slope, a sowing method for simulating the scattering and germination characteristics of the wild seeds, and the technical combination of moderate water supplement of snow moisture, heat preservation and moisture preservation covered by a grass curtain and the like, so as to realize the continuity of water and soil conservation of the side slope of the arid region.

The invention aims to provide a method for sowing herbaceous plants on side slopes in arid regions in a soil moisture manner, which comprises the following steps:

s1, in the complete mature period of the Leamangwang and the Alexandrium sambucifolia, respectively collecting capsules with plump seeds and good maturity on the withered plants to obtain a Leamangwang seed and a Alexandrium sambucifolia seed, and storing for later use;

s2, before freezing the soil in the middle ten days of 11 months, carrying out slope soil conditioning, wherein the slope soil is required to be smooth and uniform, and larger soil blocks and stones are removed;

S3, mixing the clean Leaman pitaya seeds and the clean Leaman pitaya seeds uniformly to obtain mixed seeds, mixing the mixed seeds with dry fine sandy soil, and stirring uniformly to obtain mixed seed soil;

s4, adding clear water into the mixed seed soil to a degree that the clear water is kneaded into a ball by hand and falls into a loose state to obtain wet seed soil;

s5, uniformly sowing the wetted seed soil to a slope surface, and uniformly raking and scattering; beating, pressing and smoothing soil raked and scattered on the slope surface;

s6, covering the flattened slope surface with a straw curtain and fixing;

s7, after heavy snow appears in winter, uniformly spreading the snow on the flat ground above the slope surface to the grass curtains on the slope surface, and lightly pressing and smoothing;

s8, in spring of the next year, uncovering the grass curtain after the grass seeds germinate.

Preferably, in S1, naturally drying Leamanga lingnanensis capsules in the shade for 3-5 days, spreading the capsules on the ground, tapping with a bar until the cracked seeds are exposed, screening peel impurities to obtain Leamanga lingnanensis seeds, naturally drying the Leamanga lingnanensis seeds in the shade for 3-5 days, then pouring the Leamanga lingnanensis into a breathable cloth bag, and storing the Leamanga lingnanensis in a shade room at normal temperature;

the collection method of the pterocarpus heterophyllus king seeds is the same as that of the Leyman overlord seeds.

Preferably, in S2, the slope gradient of the side slope is less than 25 degrees, and the slope soil is sandy loam or light clay loam.

Preferably, in S3, the volume ratio of the Liemann pitaya absolute seed to the pterocarpus anabrosus absolute seed in the mixed seeds is 2-3: 1;

in the mixed seed soil, the volume ratio of the mixed seeds to the dry fine sand soil is 1: 3-4.

Preferably, in S5, the net seeding amount per square meter is 5-8 g.

Preferably, in S5, uniformly raking and scattering by using a rake, wherein the raking and scattering depth is 3-5 cm, the soil on the surface layer of the soil is loosened, and the soil is uniformly mixed with the seed soil.

Preferably, in S6, when covering with the grass curtains, the grass curtains are laid line by line along the contour line sequence from the toe to the top of the slope, the grass curtain in the previous line is to be covered and crossed on the grass curtain in the next line, and the width of the covered and crossed area between the grass curtains is 10-20 cm;

fixing by U-shaped iron wires, wherein the depth of the U-shaped iron wires inserted into the soil is more than or equal to 15 cm.

Preferably, in S7, the thickness of the snow covering the grass curtain is 5-10 cm.

Preferably, 5 to 10 strains/m in S8²After the grass seeds sprout, the grass curtain is uncovered.

The invention provides a method for sowing herbaceous plants on a side slope in a arid region in snow moisture, which is characterized by comprising the following steps:

and (3) selecting species: sowing grass seeds and selecting the short-living, fast-sprouting, high-coverage, super-drought, barren-resistant and short-lived plant-like phenological herbaceous plants; two types of life type plants (annual and perennial) are adopted, the annual herbs realize quick germination and growth and high coverage, the perennial herbs grow slowly and gradually take over the coverage space of the annual herbs in the later period, and the space-time matching planting of the two types of life type herb species and the slope protection effect which is continuous in the current year are realized;

Manual sowing: the Liemann overlord and the pterocarya seeds are small, and after capsules crack, the seeds are spread along the terrain with wind, buried in the surface layer of soil, and rapidly germinate and grow after snow melts in spring. Therefore, sowing on the side slope of the arid region with stable accumulated snow in an applicable sowing mode is the guarantee of survival of two kinds of overlord plants. The method is characterized in that the method comprises the following steps of removing wings of two herbaceous plants (the wings can be removed to improve the seed germination rate), uniformly sowing mixed fine sandy soil on the surface layer of soil (1 part of seeds is mixed with 3 parts of fine sandy soil (a mixture of sandy soil and loam), the seeds are not easy to freeze into clusters, and simultaneously, accumulated snow can effectively store water when melting), wherein the thickness of the seeds is not more than 5cm, and the measures are light in weight, and are the key of seed germination in early spring;

covering the straw curtain: the straw mat is used for covering, so that slope runoff is prevented from being formed after the covered snow layer is melted, and a slope is protected. On one hand, the straw-seed cultivation method can well play a role in preserving heat and moisture and improve the germination rate of the straw seeds. By adopting the mode, the proper accumulated snow water replenishing condition is ensured once every 4 months in the year, and the emergence rate of the zygophyllum herbaceous plant is kept at 8 plants/m on average²The coverage of the planted plant in the current year within 7 months can reach 15-20%, and shrubs are planted on the basis of coverage of the prohibitions herbaceous plants in the current autumn, so that the side slope protection effect is more stable.

Snow cover: the accumulated snow is utilized for covering, on one hand, the seeds are sowed before the snow, the seeds are well contacted with soil bottom moisture, and the seedlings grow strongly and are sturdy after sprouting. On one hand, good water supplement is provided for seed germination in early spring during snow melting. The snow layer with the thickness of 5-10 cm is used for supplementing key water from seedling to strong seedling.

The pterocarpus heterophyllus king (Zygophyllumpterocarpus Bge) is a perennial herb of Zygophyllaceae in early spring, and has woody root, multiple head and 10-20 cm high stem. The capsule has a round and oval shape, a length of 10-20 mm, a width of 10-12 mm, a wing width of 2-3 mm, and 5 wings. The seeds are in the shape of long round ovals, the length of the seeds is 3-4 mm, and the width of the seeds is 2-2.5 mm. The flowering period is 6-7 months, and the fruit period is 7-9 months. Leymanbang (Zygophyllum lehmannianum Bge.) is an early-spring annual herbaceous plant of Zygophyllaceae, with thin and single root and 6-18 cm high. The capsule is elliptical, and the Changlian overlord and the pterocarpus heterophyllus have the characteristics of strong adaptability, drought resistance, salt and alkali resistance and rapid germination, belong to the plant types of escaping from drought and severe habitats, and have the characteristic of short-lived plant-like phenology. Snow in the northern spring of Xinjiang is ablated, a suitable habitat is provided for the propagation and growth of short-lived plants in early spring, and Leymanbangwang rapidly sprouts, buds and fruits in the short suitable growth time, so that better surface vegetation coverage is realized. And in 6 and 7 months, the temperature rises rapidly, and when the soil and the atmosphere are obviously dried, Liemann overlord finishes the life cycle, thereby effectively avoiding high death risk caused by the dry and hot climate in the desert environment to the germination, growth, development and reproduction of seeds, and achieving the successful reproduction. The pterocarpus heterophyllus slowly grows and develops in the period until 8 and 9 months, the life cycle is ended, and water and soil loss and wind erosion aggravation caused by bare land increase (rainstorm in summer in 7 and 8 months) after the Leymanwang withers are avoided. The two species combine the snow moisture sowing technology to well finish the mission of the pioneer plants on the side slope, quickly cover the slope in the growing season, and achieve the effect of preventing the water and soil loss of the slope. The method provides a 'transition period' of the first year for slope greening by using plant species (drought-tolerant, saline-alkali-tolerant shrub species and herbaceous species which generally grow slowly and cannot play a role in protecting the slope rapidly on the slope with serious water and soil loss) with drought tolerance in the later period, and provides important slope protection for slope greening in the first year. Practical methods and technical approaches are provided for vegetation restoration of the engineering side slopes around the quasi-songorian basin. Therefore, the method has important application value.

The invention provides a seeding method of herbaceous plants of overlord side slope overlord in arid area based on environmental characteristics of engineering side slope in arid area, according to the growth characteristics of the herbaceous plants of overlord with characteristics of short-lived plants in early spring, the seeding technology of herbaceous plants of overlord side slope in arid area is provided, through experimental research and field observation under various measures, the method is applied to the slope of Clarity engineering, and the emergence rate is kept at 8 strains/m on average in experimental demonstration of artificial vegetation construction of camels at the periphery of oasis in arid area by utilizing the method²Above, preserveThe ratio is 3/m²The coverage of the land can reach 15 to 20 percent after 7 months, and is close to the coverage of natural vegetation on the same-period flat land (25 to 30 percent) of the land. The successful application of the technology is beneficial to artificially planting the Bawang genus herbaceous plant as a pioneer plant on a slope for stabilizing the slope, playing a role in preventing water and soil loss, and solving the problems that shrub species grow slowly and cannot rapidly solve water and soil erosion of the slope. And plans to generalize the technique to other, conditionally similar areas.

Compared with the prior art, the invention has the following beneficial effects:

(1) compared with the traditional grass seed sowing strategy based on irrigation conditions, the scheme skillfully selects the Bawang herb species with the germination characteristics of the early spring type short-lived plants (the characteristics of rapid and large amount of germination, budding and fructification under the conditions of low water consumption in early spring and early summer), thereby solving the problem that the traditional slope protection plants are difficult to germinate and grow under the condition of drought side slope and water shortage;

(2) Compared with the traditional grass seed sowing strategy based on the low irrigation condition, the scheme only covers the grass curtain, the accumulated snow and other measures after sowing, the construction cost is low, the operation is simple and convenient, and meanwhile, the natural germination, budding and fructification growth process of the plants under the side slope condition is restored by artificially creating conditions to the maximum extent, so that the germination rate and the coverage of the plants under the side slope condition after sowing are greatly improved.

Drawings

FIG. 1 is a schematic view of grass seed sowing provided by the present invention;

FIG. 2 is a 2013 autumn slope surface sorting and sowing map;

fig. 3 shows the overall growth of the herbaceous plant of the genus tyrant in summer 2014, wherein fig. 3 (left) shows the overall growth at one shooting angle, and fig. 3 (right) shows the overall growth at another shooting angle;

FIG. 4 shows the growth of Liemannian overlord in summer 2014;

FIG. 5 shows the growth of samara in 2014 in summer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, in the following embodiments, there is a certain reasonable range of relevant data due to operation errors in the implementation process.

Example 1

This example was carried out in blocks in a small area field.

S1, respectively collecting seeds of the lingman and the pterocarpus paradisiacus in the full maturation period of the lingman seeds in late 7 months and the full maturation period of the pterocarpus paraiacus seeds from late 8 months to early 9 months.

The acquisition method comprises the following steps: collecting Leamantan and Alternaria laevigata capsules with full seeds and good maturity on dried plants respectively, naturally drying the capsules in the shade for 5 days, spreading the capsules on the ground, tapping with a bar until the cracked seeds are exposed, screening peel impurities to obtain Leamantan seeds and Alternaria laevigata seeds, naturally drying the Leamantan seeds and the Alternaria laevigata seeds in the shade for 5 days, pouring the Leamantan seeds and the Alternaria laevigata seeds into a breathable cloth bag, and storing the Leamantan and Alternaria laevigata seeds in the shade room at normal temperature;

s2, before the soil is frozen in the middle ten days of 11 months, the soil on the slope of the side slope is finished, the soil on the slope is required to be smooth and uniform, and larger soil blocks and stones are removed; the slope of the side slope is less than 25 degrees, and the slope soil is sandy loam.

S3, mixing the Liemann overlord clean seeds and the pterocarpus heterophyllus clean seeds according to the volume ratio of 2: 1, uniformly mixing to obtain mixed seeds. And mixing the mixed seeds with dry fine sand soil according to a volume ratio of 1: 3, mixing and uniformly stirring to obtain mixed seed soil;

S4, slightly mixing the uniformly stirred mixed seed soil with clear water, wetting and uniformly stirring the mixture until the wetting degree reaches the degree of kneading into a ball by hand and dropping and scattering to obtain the wetted seed soil;

s5, wetting the seed soil according to2 bundles/m²About 3/m²The sowing quantity is uniformly sowed on the slope, namely the net sowing quantity per square meter is 5-8 g; uniformly raking and scattering the wet seed soil by using a rake, wherein the raking and scattering depth is 3-5 cm, the soil on the surface layer of the soil is required to be loosened, and the soil is uniformly mixed with the seed soil; beating, pressing and smoothing soil scattered on the slope by using tools such as shovels and the like;

s6, covering the pressed and smoothed slope surface with a straw curtain, and fixing with U-shaped iron wires, wherein the depth of the U-shaped iron wires inserted into the soil is more than or equal to 15 cm; paving the straw curtains line by line along the contour line sequence from the toe to the top of the slope, wherein the straw curtains in the upper line are covered and crossed on the straw curtains in the lower line; the cross width of the straw curtains is 10-20 cm;

s7, after heavy snow in winter, uniformly spraying the snow on the flat land above the slope onto a slope grass curtain, and lightly pressing and smoothing; the thickness of the snow covered on the straw curtain is 5-10 cm. As shown in fig. 1, 1 refers to a mixed seed soil layer, 2 refers to a straw curtain layer, and 3 refers to a snow layer.

S8, 5-10 plants/m in spring of the next year ²After the grass seeds sprout, the grass curtain is gradually uncovered.

Example 2

The embodiment is implemented in a slope greening test demonstration area of a water diversion canal of the Clamayy, namely the large-area popularization demonstration, the area is larger than 50 mu, and the specific operation is carried out according to the following steps:

s1, collecting seeds of the Lepidium ramosissimum and the Rhpidium samarangense respectively in the complete maturity period of the Lepidium ramosissimum seeds in late 7 months and the complete maturity period of the Lepidium samarangense seeds from late 8 months to early 9 months.

The acquisition method comprises the following steps: collecting the capsules of Lemanyaowang and Alternaria laevigata with plump seeds and good maturity on the dried plants respectively, and naturally drying the capsules in shade for 5 days. Spreading capsule on ground, tapping with a bar until cracked seed is exposed, sieving to remove peel impurities to obtain Leyman overlord clean seed and Pterocarpus heterophyllus clean seed, naturally drying Leyman overlord clean seed and Pterocarpus heterophyllus clean seed in shade for 5 days, pouring into a breathable cloth bag, and storing at room temperature in a cool room;

s2, before the soil is frozen in the middle ten days of 11 months, the slope soil is finished, the slope soil is required to be smooth and uniform, and larger soil blocks and stones are removed; the slope soil is sandy loam.

S3, after the step S2 is finished, mixing the Liemann overlord seeds and the pterocarpus sambucus seeds according to the volume ratio of 2: 1, mixing uniformly. And mixing the mixed seeds with dry fine sand soil according to a volume ratio of 1: 3, mixing and uniformly stirring; and mixing the seeds of other species with dry fine sand soil respectively according to the volume ratio of 1: 3, mixing and uniformly stirring;

S4, after the step S3 is finished, the evenly stirred seed soil is slightly mixed with clean water to be wetted and evenly stirred, and the wetting degree reaches the degree of kneading into a ball by hand and dropping to be scattered;

s5, wetting the seed soil of the step S4 according to the ratio of 2 seeds/m²About 3/m²The sowing quantity is uniformly sowed on the slope, namely the net sowing quantity per square meter is 5-8 g; as shown in fig. 2; uniformly raking and scattering the wet seed soil by using a rake, wherein the raking and scattering depth is 3-5 cm, the soil on the surface layer of the soil is required to be loosened, and the soil is uniformly mixed with the seed soil; beating, pressing and smoothing soil scattered on the slope by using tools such as shovels and the like;

s6, covering the pressed and smoothed slope surface with a straw curtain, and fixing with U-shaped iron wires, wherein the depth of the U-shaped iron wires inserted into the soil is more than or equal to 15 cm; paving straw curtains line by line along a contour line sequence from a toe to a top of a slope, wherein the straw curtains in the previous line are covered and crossed on the straw curtains in the next line;

s7, after heavy snow in winter, uniformly spraying the snow on the flat land above the slope onto a slope grass curtain, and lightly pressing and smoothing; the thickness of the snow covered on the straw curtain is 5-10 cm.

And S8, in spring of the next year, gradually uncovering the straw mat after the grass seeds germinate.

Fig. 3 is the overall growth condition of the herbaceous plants of the prohibitions in 2014, fig. 4 and 5 are the growth condition diagrams of the Leyman prowana and the pterocarya prowana respectively, and as can be seen from fig. 3-5, the herbaceous plants of the prowana grow well under the condition of a side slope.

Example 3

The acquisition method comprises the following steps: collecting Leamantan and Alternaria laevigata capsules with full seeds and good maturity on dried plants respectively, naturally drying the capsules in the shade for 3 days, spreading the capsules on the ground, tapping with a bar until the cracked seeds are exposed, screening peel impurities to obtain Leamantan seeds and Alternaria laevigata seeds, naturally drying the Leamantan seeds and the Alternaria laevigata seeds in the shade for 4 days, pouring the Leamantan seeds and the Alternaria laevigata seeds into a breathable cloth bag, and storing the Leamantan and Alternaria laevigata seeds in the shade room at normal temperature;

s2, before freezing the soil in the middle ten days of 11 months, carrying out slope soil conditioning, wherein the slope soil is required to be smooth and uniform, and larger soil blocks and stones are removed; the slope of the side slope is less than 25 degrees, and the slope soil is light clay loam.

S3, mixing the Liemann pitaya seed and the samara pitaya seed according to the volume ratio of 3: 1, uniformly mixing to obtain the mixed seeds. And mixing the mixed seeds with dry fine sand soil according to a volume ratio of 1: 3.5, mixing and uniformly stirring to obtain mixed seed soil;

s4, slightly mixing the uniformly stirred mixed seed soil with clear water, wetting and uniformly stirring, wherein the wetting degree reaches the degree of kneading into clusters by hands and dropping and scattering to obtain the wetted seed soil;

S5, wetting the seed soil according to the ratio of 2 seeds/m²About 3/m²The sowing quantity is uniformly sowed on the slope, namely the net sowing quantity per square meter is 5-8 g; wetting the seed soil by using a rake, uniformly raking and scattering the seed soil, wherein the raking and scattering depth is 3-5 cm, loosening the soil on the surface layer of the soil, and uniformly mixing the soil with the seed soil; beating, pressing and smoothing soil raked and scattered on the slope surface by using tools such as shovels and the like;

s6, covering the pressed and smoothed slope surface with a straw curtain, and fixing with U-shaped iron wires, wherein the depth of the U-shaped iron wires inserted into the soil is more than or equal to 15 cm; paving the straw curtains line by line along the contour line sequence from the toe to the top of the slope, wherein the straw curtains in the upper line are covered and crossed on the straw curtains in the lower line; the crossing width of the grass curtains is 10-20 cm;

S8, 5-10 plants/m in spring of the next year²After the grass seeds sprout, the grass curtain is gradually uncovered.

Example 4

S1, respectively collecting seeds of the Leymanba king and the sambucus chinensis from late 7 to late 9 months.

The acquisition method comprises the following steps: collecting Lerman and Leanan capsules with plump seeds and good maturity on the dried plants in the complete maturation period of the above species, naturally drying the capsules in the shade for 4 days, spreading the capsules on the ground, tapping with a bar until the cracked seeds are exposed, screening peel impurities to obtain Leaman seeds and Leanan seeds, naturally drying the Leaman seeds and the Leanan seeds in the shade for 3 days, pouring into a breathable cloth bag, and storing at normal temperature in a shady and cool room;

S2, before freezing the soil in the middle ten days of 11 months, carrying out slope soil conditioning, wherein the slope soil is required to be smooth and uniform, and larger soil blocks and stones are removed; the slope of the side slope is less than 25 degrees, and the slope soil is sandy loam.

S3, mixing the Liemann pitaya seed and the pterocarpus anabrosus seed according to the volume ratio of 2.5: 1, uniformly mixing to obtain the mixed seeds. And mixing the mixed seeds with dry fine sandy soil according to the volume ratio of 1: 4, mixing and uniformly stirring to obtain mixed seed soil;

s5, wetting the seed soil according to the ratio of 2 seeds/m²About 3/m²The sowing quantity is uniformly sowed on the slope, namely the net sowing quantity per square meter is 5-8 g; uniformly raking and scattering the wet seed soil by using a rake, wherein the raking and scattering depth is 3-5 cm, the soil on the surface layer of the soil is required to be loosened, and the soil is uniformly mixed with the seed soil; beating, pressing and smoothing soil scattered on the slope by using tools such as shovels and the like;

S7, after heavy snow appears in winter, uniformly spraying the snow on the flat land above the slope surface onto the slope surface straw curtain, and lightly pressing and smoothing; the thickness of the snow covered on the straw curtain is 5-10 cm.

Comparative example 1

The same as in example 1, except that the seeds used were halophytic grass; mixing halophyte seeds with dry fine sand according to a volume ratio of 1: 3, mixing and uniformly stirring to obtain the mixed seed soil.

Comparative example 2

The same as example 1 except that the seeds used were stipa virgata; mixing the stipa capillata seeds with dry fine sandy soil according to a volume ratio of 1: 3, mixing and uniformly stirring to obtain the mixed seed soil.

Comparative example 3

The same as example 1, except that the seeds used were artemisia desertorum; mixing the sand sagebrush seeds with dry fine sand soil according to a volume ratio of 1: 3, mixing and uniformly stirring to obtain the mixed seed soil.

Comparative example 4

The same as in example 1, except that the seeds used were chenopodium camel; mixing the chenopodium hamatum seeds with dry fine sandy soil according to the volume ratio of 1: 3, mixing and uniformly stirring to obtain the mixed seed soil.

After the straw mat was removed at the beginning of 5 months in the next year, a sample survey was conducted on example 1 and comparative examples 1 to 4 in accordance with the different species sowing areas, as shown in table 1.

TABLE 1 emergence rate and preservation rate after sowing of different desert species

As can be seen from the table 1, the zygophyllum herbaceous plant adopted by the invention has good emergence rate and preservation rate under the condition of a side slope, and the problem that the traditional slope protection plant is difficult to germinate and grow under the condition of drought side slope water shortage is solved.

It should be noted that, when the present invention relates to a numerical range, it should be understood that two endpoints of each numerical range and any value between the two endpoints can be selected, and since the steps and methods adopted are the same as those in the embodiment, in order to prevent redundancy, the present invention describes a preferred embodiment.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for sowing herbaceous plants on side slopes in arid regions in snow moisture is characterized by comprising the following steps:

s1, in the complete maturity period of the Leymangang and the Alternaria pterocarpa, respectively collecting capsules with plump seeds and good maturity on the withered plants to obtain a Leymanga net seed and an Alternaria pterocarpa net seed, and storing for later use;

s2, before the soil is frozen in the middle ten days of 11 months, the soil on the slope of the side slope is finished, the soil on the slope is required to be smooth and uniform, and larger soil blocks and stones are removed;

s3, uniformly mixing the clean seeds of the Leyman overlord and the clean seeds of the samara overlord to obtain mixed seeds, mixing the mixed seeds with dry fine sandy soil, and uniformly stirring to obtain mixed seed soil;

s4, adding clear water into the mixed seed soil to reach the degree that the seed soil is kneaded into lumps by hand and falls off to be scattered, and obtaining wet seed soil;

s5, uniformly sowing the wet seed soil to a slope surface, and uniformly raking and scattering; beating, pressing and smoothing soil raked on the slope;

s6, covering the pressed and smoothed slope surface with a straw curtain, and fixing;

s7, after heavy snow appears in winter, uniformly spreading the snow on the flat land above the slope surface onto a slope grass curtain, and lightly pressing and smoothing;

s8, in spring of the next year, after the grass seeds sprout, the grass curtain is removed.

2. The method for sowing herbaceous plants on the side slope of the arid area in snow moisture as claimed in claim 1, wherein in S1, Leymanba capsule is naturally dried in the shade for 3-5 days, the capsule is spread on the ground, and is tapped with a bar until the cracked seeds are exposed, peel impurities are screened out to obtain Leymanba clean seeds, the Leymanba clean seeds are naturally dried in the shade for 3-5 days, and then are poured into a breathable cloth bag and stored in a shady room at normal temperature;

3. The method for sown in soil moisture of herbaceous plants on side slopes of arid regions in the soil as claimed in claim 2, wherein in S2, the slope is less than 25 °, and the slope soil is sandy loam or light clay loam.

4. The method for sowing herbaceous plants on the side slopes of the arid regions in the snow field according to claim 3, wherein in S3, the volume ratio of the clean seeds of Leyman Bawang to the clean seeds of samara Bawang in the mixed seeds is 2-3: 1;

5. The method for sowing herbaceous plants on the side slopes of the arid regions in the snow field according to claim 4, wherein the net sowing amount per square meter in S5 is 5-8 g.

6. The method for sowing herbaceous plants on the side slope of the arid region in the snow moisture manner as claimed in claim 5, wherein in S5, raking is carried out uniformly with a rake, the raking depth is 3-5 cm, soil on the surface layer of the soil is loosened, and the soil is mixed uniformly with seed soil.

7. The method for sowing herbaceous plants on the side slopes of the arid regions in the snow field as claimed in claim 6, wherein in S6, when the grass curtains are covered, the grass curtains are laid line by line along the contour line sequence from the toe to the top of the slope, the grass curtains on the upper line are covered and crossed on the grass curtains on the lower line, and the width of the covered and crossed part between the grass curtains is 10-20 cm;

8. The method for sowed in the soil moisture of herbaceous plants on the side slopes of the arid regions in the soil moisture manner as claimed in claim 7, wherein in the step S7, the thickness of the snow covering the straw curtains is 5-10 cm.

9. The dry region side slope herbaceous plant snow moisture sowing method according to claim 8, characterized in that 5-10 plants/m in S8²After the grass seeds germinate, the grass curtain is uncovered.