CN109122074B - Method for treating Hulun lake sand - Google Patents
Method for treating Hulun lake sand Download PDFInfo
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- CN109122074B CN109122074B CN201810975063.7A CN201810975063A CN109122074B CN 109122074 B CN109122074 B CN 109122074B CN 201810975063 A CN201810975063 A CN 201810975063A CN 109122074 B CN109122074 B CN 109122074B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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Abstract
The invention relates to the field of sand control, in particular to a method for controlling Hulun lake sand. The method for treating the Hulun lake sand comprises the following steps: at least two non-biological sand barriers are arranged on the sand, seedlings of splendid achnatherum, lysimachia and several of bauhinia are planted in the sand surrounded by the non-biological sand barrier on the innermost layer, and caragana microphylla seeds are planted between the non-biological sand barrier and the non-biological sand barrier. The combination of biological sand barriers and non-biological sand barriers formed by planting caragana microphylla can effectively prevent sand wind and fix drift sand, and meanwhile, planting a plurality of bauhinia, lysimachia and splendid achnatherum in the sand barriers can further inhibit desertification and prevent grassland degeneration.
Description
Technical Field
The invention relates to the field of sand control, in particular to a method for controlling Hulun lake sand.
Background
The river basin of the Hulun lake has 3.33 km2The grass of (2) occupies 80.13% of the total area. The grassland ecosystem has important ecological functions of conserving water and soil, preventing wind and fixing sand, keeping biological diversity and the like, simultaneously provides grassland resources for animal husbandry, and according to 2013 remote sensing image analysis, the grassland of the river basin of the Hulun lake degenerates by 2.03 km2, occupies 60.73 percent of the area of the grassland of the lake region, and occupies 1553 mu of sandy grassland. The river lake basin is continuously arid, and the coastal grazing of the lake area is excessive, so that the wetland area is shrunk, and the biodiversity is continuously reduced. The resources of the river basin of the Hulun lake are protected, and a large amount of manpower and material resources are invested by national and local governments to implement the method in key areas, and the method is implemented by banning grazing, balancing grasses and livestock, enclosing and raising fences and preventing sand and forestation, so that the river basin of the Hulun lake is improved to a certain extent. However, the desertification grassland treatment has the problems of single means, random method, inadaptation of sand control varieties, slow effect, poor persistence, no normative standard of sand control and the like. The forage and the balance of the grasses and the livestock are not achieved to the expected effect, and the degradation and the desertification of the grassland are continued. Therefore, a method for effectively treating the sand is urgently needed.
Disclosure of Invention
The invention provides a method for treating the Hulun lake sand, which has good treatment effect on the Hulun lake sand and effectively inhibits desertification and grassland degradation.
The invention is realized by the following steps:
a method for governing Hulun lake sand comprises the following steps:
at least two non-biological sand barriers are arranged on the sand, seedlings of splendid achnatherum, lysimachia and several of bauhinia are planted in the sand surrounded by the non-biological sand barrier on the innermost layer, and caragana microphylla seeds are planted between the non-biological sand barrier and the non-biological sand barrier.
The invention has the beneficial effects that: the Hulunhu sand land treatment method provided by the invention can effectively prevent weathering and fix quicksand by combining biological sand barriers and non-biological sand barriers formed by planting caragana microphylla, and can further inhibit desertification and prevent grassland degeneration by planting several kinds of Artemisia, Lysimachia capillaris and several kinds of splendid achnatherum in the sand barriers.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The method for harnessing the Hulun lake sand of the embodiment of the present invention will be specifically described below.
The embodiment of the invention provides a method for treating Hulun lake sand, which comprises the following steps:
firstly, the locusts are killed on the sand, specifically, a medicament is sprayed on the sand 6 to 7 days before sowing, the sprayed medicament is a matrine medicament, and the matrine is a plant-source pesticide, has the characteristics of specificity and naturalness, can be rapidly decomposed in nature, reduces the influence of the medicament on the ecological environment, is not easy to generate drug resistance, and is a very green and environment-friendly pesticide. Specifically, each kilogram of matrine corresponds to 280-330 kilograms of water to prepare a corresponding medicament, and each mu of sandy land corresponds to 0.45-0.55 kilogram of medicament. The medicament and the application proportion can ensure that the matrine can effectively exert the drug effect and the locust killing effect.
The pH value of the sand land is tested to ensure that the pH value of the sand land of the area to be planted is between 7.1 and 8.6, thereby providing better growth conditions for the growth of the subsequent seeds and seedlings.
After locust is killed, a non-biological sand barrier is arranged, the adopted non-biological sand barrier is grass square grids woven by reeds, namely, dry reeds (without vital characteristics) are woven into the grass square grids with the specification of 1m multiplied by 1m ═ 2 square meters by utilizing the existing weaving process, the reeds have toughness and can keep water sources, and the grass square grids woven by the reeds can fix quicksand.
Specifically, at least two layers of non-biological sand barriers are arranged on the sand, namely at least two layers of grass squares are arranged on the sand, and specifically, the grass squares are planted on the sand with the depth of 30-40 cm, so that shifting sand can be prevented from moving, and the effect of fixing shifting sand is achieved. Furthermore, caragana lobular seeds are planted between the non-biological sand barriers and the non-biological sand barriers, the caragana lobular can well prevent wind and fix sand to form biological sand barriers, and then the effect of pulling the front rail and the back rail can be achieved through the combination of the biological sand barriers and the non-biological sand barriers, so that quicksand is further fixed, and the desertification and the duration of grassland degradation are inhibited.
Specifically, at least 2 rows of caragana lobular seeds are planted between the non-biological sand barriers and the non-biological sand barriers. At least 2 rows of caragana microphylla seeds are planted to ensure the effect of the formed biological sand barrier and the sand fixing effect.
Further, the caragana microphylla seeds are planted in sand after being mixed with a fertilizer. Specifically, the fertilizer comprises urea and diamine, wherein the dosage of the urea is 13-14 kg per mu of sandy land, and the dosage of the diamine is 10-12 kg per mu of sandy land. The seeds and the fertilizer are mixed, so that the germination of the seeds can be promoted, and the plant diseases and insect pests can be prevented. Due to the fact that the sand contains rich elements such as iodine, zinc, copper and phosphorus and only contains low nitrogen, complete and balanced nutrient elements required by growth of caragana microphylla seeds can be ensured by planting caragana microphylla seeds with fertilizers attached to the surfaces after seed dressing, growth of caragana microphylla seeds is further ensured, and formation of biological and non-biological sand barriers is ensured.
The seeding depth of the caragana lobular seeds is 2-4 cm, and the row spacing is 30-45 cm. The planting conditions can ensure that the caragana microphylla has enough growth space, and the root system of the caragana microphylla can well act on the sand to fix the sand.
Then irrigate water to sand, plant the caragana lobula seed rapidly under the moist condition of assurance sand, and irrigate permeable water again at once after planting for the adnexed fertilizer in seed surface can dissolve, then get into the sand, and the proportion and the kind of nutrient composition in the balanced sand are then guaranteed that the seed can absorb balanced nutrition, guarantee the normal growth of seed. And the sand land is watered thoroughly at intervals, so that the seeds are prevented from being died due to water shortage and drought.
Finally, seedlings of splendid achnatherum, lysimachia and several of artemisia are planted in the sand surrounded by the non-biological sand barriers at the innermost layer, the 3 kinds of grass can interact with each other, the sand in each area can not flow, and the desertification and the grassland degradation are effectively inhibited.
Specifically, the seedlings of splendid achnatherum, rice plant and several of Artemisia capillaris are planted in different regions, i.e. the splendid achnatherum is planted in a low-lying region, several of Artemisia capillaris are planted in a gentle region, and the rice plant is planted in a tuyere region. When the planting area is equipped with a low-lying area, several kinds of bauhinia are planted in the gentle area, and when the gentle area is equipped with a tuyere area, several kinds of grass are planted in the tuyere area.
Splendid achnatherum can grow on the low wet alkaline plain or the Tibet plateau of up to 5000 meters, then can be in the good growth of low-lying region, can promote the vegetation volume in low-lying region. The artemisia parvifolia is also called as the artemisia parvifolia, is drought-resistant, grows on the lower half of the windward slope of a semi-solid dune and a moving dune, has deep main roots and developed lateral roots, and ensures that the artemisia parvifolia roots can fully extend in gentle zones, so that the artemisia parvifolia can grow well in the gentle zones. The lysimachia is drought-resistant and cold-resistant, can endure slight salinization soil, can well grow in the tuyere zone, and then the lysimachia is planted in the tuyere zone, so that plants can be guaranteed in the tuyere zone. And the lysimachia can grow in sandy soil. Planting splendid achnatherum, artemisia longifolia and lysimachia herb in different areas can ensure that sand in each area can be fixed and prevent the persistence of desertification, and meanwhile, the 3 plants can well grow in the sand and arid areas, so that the growth of the plants can be ensured, and the degradation of grassland is further reduced.
Furthermore, the depth of the splendid achnatherum planted is 5-7 cm, the plant-row spacing is 13-17cm, the depth of the rice planted is 5-8 cm, the plant-row spacing is 18-22cm, the depth of the several Balaohao planted is 5-7 cm, and the plant-row spacing is 23-27 cm. The planting conditions of the 3 seedlings are controlled, so that the growth of the 3 plants is guaranteed, and then the sand fixation effect is realized.
Furthermore, the seedlings of splendid achnatherum planted were four-leaf one-heart seedlings at tillering stage, the seedlings of lysimachia were four-leaf one-heart seedlings at tillering stage and six-leaf one-heart seedlings at several-branch stage of Artemisia annua. Adopt the seedling of above-mentioned growth period, can promote the survival rate of seedling in sand, prevent to burn the seedling, if the period of the seedling of selection is too little, the seedling can't adapt to the environment in sand, causes the seedling to die by a large scale, is unfavorable for the growth of above-mentioned 3 kinds of grass, if the period of the seedling of selection is too big, has increased the cost of planting, and this seedling also can not good growth, and the seedling dies easily.
Specifically, the 3 kinds of seedlings are planted, namely caragana microphylla seeds are sown 1-2 days after locust killing is carried out for 7-8 days, sand surrounded by the abiotic sand barriers at the innermost layer is watered thoroughly, then the splendid achnatherum, lysimachia grass and artemisia longifolia are planted, planting is carried out in a mode of Chinese character 'pin', planting time ranges from middle ten days of June to early eighty months, at the moment, the 3 kinds of seedlings are in a rainy season, rainfall is relatively heavy, and humidity and air temperature are favorable for plant growth.
After planting, the sand land is watered thoroughly at intervals, the watering basis is to ensure that floating sand at least about 5cm away from the ground surface is wet, namely when the sand land about 5cm away from the ground is dry or lack of water, the water needs to be watered thoroughly, so that the seedlings are ensured to have sufficient water to absorb, and the growth of the seedlings is ensured.
The seedlings of splendid achnatherum, lysimachia and several of Artemisia capillaris are planted, urea is applied after a seedling delay period of 13-15 days, the urea is directly applied to the surface of a sand ground, then water is permeated, so that the urea is dissolved in water and permeates into the sand ground, and then the fertilizer is absorbed by the root system of the seedlings, thereby ensuring the growth of the seedlings. The urea is required to be invisible on the surface of the sand land after the water is thoroughly poured, namely, the urea is completely dissolved and then is melted into the sand land, the applied urea is completely utilized by the sand land and seedlings, and the fertility of the sand land is improved.
Meanwhile, the sand is discontinuously watered thoroughly, so that floating sand with the surface of at least 5cm is guaranteed to be wet.
Then regularly observe the root system of planting the variety and extend and prick the condition, specifically, select 10 appearance points, then study the root system of the plant of every appearance point, 5 appearance points are the random selection among 10 appearance points, and 5 appearance points select respectively in the highest place, the lowest, middle, wind gap and the place next to the vegetation in addition, guarantee the comprehensiveness of detection. And the extension condition and the downward-binding condition of the root system are observed, and the length of the main root, the length of the lateral roots, the distribution area and the like are measured by removing sandy soil around the root system. And simultaneously detecting the physiological indexes of the overground part.
The embodiment also provides a method for governing the Hulun lake sand, which comprises the following steps:
planting between late middle of June and early of August, firstly, preparing matrine medicament, wherein each kilogram of matrine is prepared into corresponding medicament by corresponding to 280 kilograms of water. Then spraying the pesticide to the sand 6 days before sowing, and correspondingly using 0.450 kg of pesticide per mu of sand.
The pH value of the sand is tested to ensure that the pH value of the sand in the area to be planted is between 7.1 and 8.6.
Planting 3 layers of non-biological sand barriers on the sand, wherein the non-biological sand barriers are formed by grass grids, the planting depth of each layer of grass grid is 30cm, and the specification of each grass grid is 1m multiplied by 1 m-2 square meters.
The caragana microphylla seeds are mixed with urea and diamine, wherein the dosage of the urea is 13 kilograms per mu of sandy land, and the dosage of the diamine is 10 kilograms per mu of sandy land.
Then, the sandy land is watered thoroughly, and caragana microphylla seeds are planted, wherein the seeding depth of the caragana microphylla seeds is 2cm, and the row spacing is 30 cm. And 2 lines of caragana microphylla seeds are planted between the non-biological sand barriers and the non-biological sand barriers, and water is sprayed once again after planting.
Finally, 1 day after planting caragana microphylla seeds, watering the sand surrounded by the abiotic sand barriers at the innermost layer to permeate water, and then planting splendid achnatherum, seedling of the splendid achnatherum and several tens of artemisia capillaris in the sand surrounded by the abiotic sand barriers at the innermost layer, wherein the seedlings of the splendid achnatherum planted are seedlings of four-leaf one-heart at tillering stage, the seedlings of the splendid achherum planted are seedlings of four-leaf one-heart at tillering stage and strong seedlings of six-leaf one-heart at branch seedling stage of the several hundreds of artemisia capillaris, and the planting is carried out in a shape like a Chinese character 'pin'. The depth of the planted splendid achnatherum is 5cm, the plant-row spacing is 13cm, the depth of the planted lysimachia is 5cm, the plant-row spacing is 18cm, the depth of the planted artemisia longipedunculata is 5cm, and the plant-row spacing is 23 cm. Splendid achnatherum is planted in a low-lying area, several Ba-Ga-Hao are planted in a gentle area, and grass is planted in a tuyere area. After planting, watering at intervals to ensure that the floating sand on the ground surface is at least about 5cm wet. And then applying urea to the surface of the sand after 15 days of seedling revival period, and then watering thoroughly. Then, the sand is discontinuously watered thoroughly to ensure that the floating sand with at least 5cm of ground surface is wet.
Example 2
The embodiment also provides a method for governing the Hulun lake sand, which comprises the following steps:
planting in the middle ten days of June to the beginning of August, firstly, preparing matrine medicament, wherein each kilogram of matrine is prepared into corresponding medicament by corresponding to 330 kilograms of water. Then spraying the pesticide to the sand 6 days before sowing, and correspondingly using 0.55 kg of pesticide per mu of sand.
The pH value of the sand is tested to ensure that the pH value of the sand in the area to be planted is between 7.5 and 8.2.
Planting 3 layers of non-biological sand barriers on the sand, wherein the non-biological sand barriers are formed by grass grids, the planting depth of each layer of grass grid is 40 cm, and the specification of each grass grid is 1m multiplied by 1 m-2 square meters.
Caragana microphylla seeds were mixed with urea in an amount of 14 kg per acre of sandy land and diamine in an amount of 12 kg per acre of sandy land.
Then, the sandy land is watered thoroughly, and caragana microphylla seeds are planted, wherein the seeding depth of the caragana microphylla seeds is 4cm, and the row spacing is 45 cm. And 2 lines of caragana microphylla seeds are planted between the non-biological sand barriers and the non-biological sand barriers, and water is sprayed once again after planting.
Finally, 2 days after planting caragana microphylla seeds, watering the sand surrounded by the abiotic sand barriers at the innermost layer to permeate water, and then planting splendid achnatherum, seedling of the splendid achnatherum and several of the artemisia capillaris in the sand surrounded by the abiotic sand barriers at the innermost layer, wherein the seedlings of the splendid achnatherum planted are seedlings of four leaves and one heart at the tillering stage, the seedlings of the splendid achherum planted are seedlings of four leaves and one heart at the tillering stage and strong seedlings of six leaves and one heart at the branch seedling stage of the artemisia capillaris, and the planting is carried out in a shape like a Chinese character 'pin'. The depth of the planted splendid achnatherum is 7cm, the plant-row spacing is 17cm, the depth of the planted lysimachia is 8cm, the plant-row spacing is 22cm, the depth of the planted artemisia capillaris is 7cm, and the plant-row spacing is 27 cm. Splendid achnatherum is planted in a low-lying area, several Ba-Ga-Hao are planted in a gentle area, and grass is planted in a tuyere area. After planting, watering at intervals to ensure that the floating sand on the ground surface is at least about 5cm wet. And applying urea to the surface of the sand after 13 days of seedling recovering period, and then watering thoroughly. Then, the sand is discontinuously watered thoroughly to ensure that the floating sand with at least 5cm of ground surface is wet.
Example 3
The embodiment also provides a method for governing the Hulun lake sand, which comprises the following steps:
planting in the middle ten days of June to the beginning of August, firstly, preparing matrine medicament, wherein each kilogram of matrine is prepared into corresponding medicament by corresponding to 300 kilograms of water. Then spraying the pesticide on the sand land 7 days before sowing, wherein 0.50 kg of pesticide is correspondingly used in each mu of sand land.
The pH value of the sand is tested to ensure that the pH value of the sand in the area to be planted is between 7.7 and 8.1.
Planting 3 layers of non-biological sand barriers on the sand, wherein the non-biological sand barriers are formed by grass grids, the planting depth of each layer of grass grid is 35cm, and the specification of each grass grid is 1m multiplied by 1 m-2 square meters.
The caragana microphylla seeds are mixed with urea and diamine, wherein the dosage of the urea is 13.5 kilograms per mu of sandy land, and the dosage of the diamine is 11 kilograms per mu of sandy land.
Then, the sandy land is watered thoroughly, and caragana microphylla seeds are planted, wherein the seeding depth of the caragana microphylla seeds is 3cm, and the row spacing is 35 cm. And 2 lines of caragana microphylla seeds are planted between the non-biological sand barriers and the non-biological sand barriers, and water is sprayed once again after planting.
Finally, 1 day after planting caragana microphylla seeds, watering the sand surrounded by the abiotic sand barriers at the innermost layer to permeate water, and then planting splendid achnatherum, seedling of the splendid achnatherum and several tens of artemisia capillaris in the sand surrounded by the abiotic sand barriers at the innermost layer, wherein the seedlings of the splendid achnatherum planted are seedlings of four-leaf one-heart at tillering stage, the seedlings of the splendid achherum planted are seedlings of four-leaf one-heart at tillering stage and strong seedlings of six-leaf one-heart at branch seedling stage of the several hundreds of artemisia capillaris, and the planting is carried out in a shape like a Chinese character 'pin'. The depth of the planted splendid achnatherum is 6cm, the plant-row spacing is 15cm, the depth of the planted lysimachia is 7cm, the plant-row spacing is 20cm, the depth of the planted artemisia longipedunculata is 6cm, and the plant-row spacing is 25 cm. Splendid achnatherum is planted in a low-lying area, several Ba-Ga-Hao are planted in a gentle area, and grass is planted in a tuyere area. After planting, watering at intervals to ensure that the floating sand on the ground surface is at least about 5cm wet. And applying urea to the surface of the sand after 14 days of seedling recovering period, and then watering thoroughly. Then, the sand is discontinuously watered thoroughly to ensure that the floating sand with at least 5cm of ground surface is wet.
Comparative example 1: the procedure of Hulun lake sand control as provided in example 1 was followed, except that the caragana microphylla seed area was replaced with a non-biological sand barrier.
Comparative example 2: the method of Hulun lake sand control provided in example 1 was followed, except that the area where the non-biological sand barriers were planted was changed to caragana microphylla seeds.
The root extension and the root binding of the plants of the examples 1 to 3 and the comparative examples 1 to 2 are detected, the physiological indexes of the overground part are observed, the planting time and the observation time are separated by 1 year, the phenolate splendid achnatherum herb and lysimachia herb phenolica are in the tillering stage, the phenolate stage of the artemisia longifolia is in the branching stage, and the specific detection observation results are shown in the table 1.
TABLE 1 results of observations
As can be seen from Table 1, in the method for controlling Hulun lake sand provided by the present invention, several bauxites, lysimachia and splendid achnatherum all grow well, and then weathering can be effectively prevented, quicksand can be fixed, desertification can be inhibited, and grassland degradation can be prevented.
In conclusion, the Hulunhu sand land treatment method provided by the invention can effectively prevent weathering and fix quicksand by planting caragana microphylla to form a combination of biological sand barriers and non-biological sand barriers, and meanwhile, planting the multiple Artemisia capillaris, the rice grass and the splendid achnatherum in the sand barriers can further inhibit desertification and prevent grassland degeneration.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for governing Hulun lake sand is characterized by comprising the following steps:
arranging at least two layers of non-biological sand barriers on the sand, planting splendid achnatherum, lysimachia and several-bauhinia seedlings in the sand surrounded by the non-biological sand barriers at the innermost layer, and planting caragana lobular seeds between the non-biological sand barriers and the non-biological sand barriers; arranging the non-biological sand barrier by planting grass squares in the sand, wherein the depth of the grass squares is 30-40 cm; the sowing depth of the caragana microphylla seeds is 2-4 cm, and the row spacing is 30-45 cm; planting splendid achnatherum in low-lying area, planting several of bauhinia, planting rice grass in tuyere area, planting splendid achnatherum, rice grass and several of bauhinia, and intermittently watering sand to ensure floating sand of at least 5 cm.
2. The method as claimed in claim 1, wherein the seedlings of splendid achnatherum, lysimachia and several of the bauhinia are planted in the sand within the non-biological sand barrier of the innermost layer by watering the sand between mid-late June and early Augussa and planting the seedlings of splendid achnatherum, lysimachia and several of the bauhinia at intervals after planting to ensure the surface to be wetted by the floating sand of at least 5 cm.
3. The method of controlling Hulun lake sand as claimed in claim 2, wherein urea is applied after 13-15 days of slow seedling stage after seedlings of splendid achnatherum, lysimachia and several of Artemisia.
4. The method of claim 1, wherein the seedlings of the planted splendid achnatherum are seedlings of four-leaf and one-heart at tillering stage, the seedlings of the lysimachia are seedlings of four-leaf and one-heart at tillering stage and strong seedlings of six-leaf and one-heart at several tillering stage.
5. The method as claimed in claim 1, wherein the depth of the planted splendid achnatherum is 5-7 cm, the plant-row spacing is 13-17cm, the depth of the planted lysimachia is 5-8 cm, the plant-row spacing is 18-22cm, the depth of the planted artemisia apiacea is 5-7 cm, and the plant-row spacing is 23-27 cm.
6. The method for treating Hulun lake sand as claimed in claim 1, wherein the caragana microphylla seeds are planted in sand after the caragana microphylla seeds are mixed with fertilizer.
7. The method of claim 6, wherein the fertilizer comprises urea and diamine, the urea is used in an amount of 13-14 kg per mu of sand, and the diamine is used in an amount of 10-12 kg per mu of sand.
8. The method of Hulun lake sand control of claim 1, wherein planting caragana lobular seeds between non-biological sand barriers and non-biological sand barriers is planting caragana lobular seeds between non-biological sand barriers and non-biological sand barriers in at least 2 rows.
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