Saline-alkali land original soil raw water double-micro-flooding root-promoting technology

Abstract

The invention discloses a saline-alkali soil raw water double-micro-flooding root-promoting technology. According to the method, 150-1500 kg of a soil conditioner, 30-150 kg of a soil remediation agent and 450-1500 kg of a soil biological conditioning fertilizer are added into per hectare of original soil according to the actual salinity condition of farmland soil. According to the actual condition of crop cultivation, ditching, ridging or bedding, drip irrigation tape laying, irrigation and seeding are carried out; and the halophilic bacteria agent is conveyed and applied through a drip irrigation belt after being uniformly stirred. By synergistically promoting metabolism of halophilic microorganisms to remove salt and improve rhizosphere microenvironment of crops, root growth is facilitated, saline-alkaline resistance of the crops is improved, and high yield and high quality of the crops are achieved. The technology does not need soil dressing, needs to consume a large amount of fresh water resources, does not have complex treatment engineering, and saves cost investment. The saline-alkali soil is improved gradually and effectively while the yield and economic benefits are obtained freely through saline-alkali soil planting, and a breakthrough positive contribution is made to planting crops on the saline-alkali soil.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of environmental remediation, and relates to a saline-alkali soil original soil and original water double-micro-drive salt root-promoting technology, in particular to an original soil and original water improvement planting method based on the use of fresh water, salt water or bitter water and other water resources on saline-alkali soil. BACKGROUND

[0002] Soil salinization, as a global ecological problem, causes a chain of effects such as decline of agricultural production, deterioration of soil structure, reduction of water resource efficiency and decrease of biodiversity, resulting in serious environmental risks and ecological hazards.

[0003] Currently, scientific research institutions are actively exploring various improvement technologies. Sand mulching can quickly improve soil physical structure, promote the formation of granular structure, enhance permeability, and effectively inhibit the upward movement of salt in the soil surface through capillary tubes. A research team conducted a sand mulching experiment in the Songnen Plain, which showed that sand mulching had a significant impact on crop growth and yield, and within a certain range, the thicker the sand mulching, the better the yield increase effect, and the soil indicators could also be significantly improved. In terms of engineering technology, a research team proposed a winter saltwater freezing irrigation technology system based on the water and salt migration law of "salt follows water and salt goes with water". This technology effectively utilizes regional cold energy and underground saltwater resources, combined with field tests in typical regions such as the Hebei Coastal Plain, based on the difference between salt and water during the freezing process, and the water-salt separation characteristics during the melting stage of the ice layer, to achieve efficient leaching of soil salt, while taking advantage of the abundant rainfall in the summer monsoon climate region, forming a multi-technology coordinated saline-alkali soil improvement mechanism.

[0004] Chemical management measures mainly achieve soil remediation through the addition of modifiers and the application of new fertilizers. The main mechanisms include adjusting soil physical and chemical properties to enhance salt leaching efficiency based on acid-base neutralization principles, and regulating soil salt-based ion composition through ion exchange processes. For example, the application of desulfurized gypsum-furfural residue-cow manure composite modifier combined with a salt drainage system effectively inhibits soil secondary salinization; and the application of aluminum sulfate promotes the formation of soil aggregates, significantly improving soil permeability coefficient and hydraulic conductivity characteristics. The silicate mineral, fly ash, pyrite ash and humic acid-microbial agent silicon calcium iron potassium magnetization fertilizer system can optimize the double electric layer structure of soil colloids, regulate soil solution ion activity, and increase the yield of crops such as rice and wheat by 8.1% to 10.2%.

[0005] Biological management measures include planting salt-tolerant crops and using microbial fertilizers. Halophytes have significant economic value; cultivating them in arid western regions, combined with water-saving drip irrigation technology, can create a low-salt environment for seedling establishment. Microbial fertilizers are beneficial for improving soil salinity. Research teams have used halophilic microbial fertilizers and scientific planting methods to improve saline-alkali land in Lanzhou New Area, enhancing soil permeability and aeration. The combined application of bio-fertilizers and chemical fertilizers has significantly increased winter wheat yields.

[0006] There are also various comprehensive management measures. Chitosan-containing soil conditioners can improve the properties of low-lying saline soils and achieve original soil greening; in shallow water level areas with heavily saline soils, original soil planting can be achieved by constructing isolation zones, controlling microcirculation systems, and leaching salt with fresh water; coastal areas with heavily saline soils can be improved by mixing materials, through steps such as spreading coarse sand and other materials, deep plowing, fertilization, ridging and planting, and drip irrigation; soil conditioner fertilizers containing zeolite powder can be used for original soil greening in low-lying saline soils, as well as for planting cherry blossoms and controlling pests and diseases.

[0007] In summary, the current ecological restoration technology system for saline-alkali land is becoming increasingly diversified, forming a multi-dimensional technical path encompassing physical improvement, chemical conditioning, biological restoration, and comprehensive regulation. However, the existing technology system still has significant limitations. Although the dominance of water washing as the core method for controlling salinity is weakening, it remains the primary approach at present. These technologies generally rely on the supply of high-quality freshwater resources, and their application is severely constrained in arid and semi-arid regions and coastal saline areas where freshwater resources are scarce. Therefore, developing innovative agricultural governance models for saline-alkali land that break through traditional freshwater dependence, and developing in-soil and in-water planting technology systems based on the synergistic utilization of freshwater resources and brackish / brackish water resources, is of significant scientific value and practical guiding significance for expanding the agricultural development and utilization of saline-alkali land. Summary of the Invention

[0008] The purpose of this invention is to address the aforementioned shortcomings of existing technologies by providing a dual-micro salt-dissipation and root-promoting technology for saline-alkali land using both soil and water. This technology is based on halophilic / salt-tolerant microbial agents, developing a soil conditioner for targeted treatment of severely saline-alkali land. It improves the rhizosphere microenvironment by synergistically promoting the metabolic salt-dissipation of halophilic / salt-tolerant microorganisms, thus promoting robust root growth, enhancing crop salt tolerance, and achieving high yields and quality. Using this method, crops can be irrigated on saline-alkali land using flowing freshwater, brackish water, or bitter water, and a certain amount of agricultural products can be harvested.

[0009] The objective of this invention can be achieved through the following technical solutions:

[0010] A method for improving planting in saline-alkali land using original soil and water, characterized by comprising the following steps:

[0011] Step 1: Level the land to ensure smooth irrigation and drainage and prevent waterlogging;

[0012] Step 2: Based on the actual crop cultivation conditions, dig furrows and ridges or make beds. Apply 150-1500 kg of mineral conditioner, 30-150 kg of soil repair agent and 450-1500 kg of soil biological conditioner per hectare, according to the degree of soil salinity and its salt composition. Then rake the soil level.

[0013] Step 3: Lay drip irrigation tape, irrigate, and sow seeds. The water used for irrigation should be fresh water, slightly brackish water, or bitter water.

[0014] Step 4: Apply 15-45 kg / hm² of undiluted halophilic / salt-tolerant bacterial agent stock solution each time. 2 For the first application, dilute the bacterial agent stock solution to water at a ratio of 1:100 to 300. For subsequent applications, dilute the stock solution to water at a ratio of 1:200 to 600. Stir well and apply the diluted solution through a drip irrigation belt.

[0015] Preferably, the salinity and salt content of farmland soil are obtained by conducting on-site investigations before land preparation and collecting soil samples according to the technical requirements of HJ / T 166-2004. The collected soil samples are then tested and analyzed according to conventional soil physicochemical property indicators.

[0016] Preferably, the mineral conditioning and improving agent in step 2 is composed of organic matter and calcined mineral powder in a weight ratio of 1-5:1. The mineral powder includes the following components by weight fraction: 20-35 parts volcanic ash, 5-15 parts potassium feldspar, 20-30 parts maifanite, 8-12 parts zeolite, 5-15 parts diatomaceous earth, 5-10 parts Bianstone, 3-7 parts calcite, and 1-5 parts basalt. The soil remediation agent includes 20-40 g / L organic complexing agent, 0.3-0.8 g / L metalloproteinase, 1.0-3.0 g / L glutamic acid, 0.3-1.0 g / L biological coenzyme, and 150 million-300 million CFU / g of effective viable bacteria, namely Bacillus laterosporus (Shandong Yihao Biotechnology Co., Ltd.).

[0017] Preferably, the correspondence between the application amount of the mineral conditioner and soil remediation agent in step 2 and the degree of soil salinity and soil salinity content is shown in the following table:

[0018] Degree of salt injury Salt content (g / kg) Improving agent (kg / hm 2 )]]> Repairing agent (kg / hm 2 )]]> Ⅰ <1.0 — — Ⅱ 1.0～3.0 150～300 30 Ⅲ 3.0～5.0 300～600 60 Ⅳ 5.0～10.0 600～1050 90 Ⅴ ＞10.0 1050～1500 150 .

[0019] Preferably, the soil biological conditioning fertilizer in step 2 includes organic matter and effective live bacteria, wherein diatomaceous earth accounts for 25%, organic matter accounts for more than 40%, and the number of effective live bacteria is not less than 0.2 billion CFU / g; wherein the effective live bacteria are commercially available Bacillus subtilis (Shandong Yihao Biotechnology Co., Ltd.) and Bacillus spp. (Kunming Zichen Agricultural Biotechnology Co., Ltd.).

[0020] More preferably, the correspondence between the application of soil biological conditioning fertilizer and soil remediation agent in step 2 and the degree of soil salinity and soil salinity content is shown in the following table:

[0021] Degree of salt injury Salt content (g / kg) Conditioning fertilizer (kg / hm 2 )]]> Ⅰ <1.0 — Ⅱ 1.0～3.0 450～600 Ⅲ 3.0～5.0 600～750 Ⅳ 5.0～10.0 750～1050 Ⅴ ＞10.0 1050～1500 .

[0022] Preferably, the crops planted in step 2 are selected from food crops, cash crops, and vegetables.

[0023] Preferably, the relationship between the application rate of the halophilic bacteria agent, the dilution ratio for each application, and the degree of soil salinity and soil salinity content in step 4 is shown in the table below:

[0024]

[0025] More preferably, the application time points in step 5 are as follows: the first application is after the seedlings have emerged from the dripping water; the second application is on the 2nd to 3rd day after sowing; the third application is on the 7th to 10th day after sowing; the fourth application is on the 20th to 22nd day after sowing; and the fifth application is on the 35th to 37th day after sowing.

[0026] Preferably, the halophilic bacterial agent in step 4 is a halophilic / salt-tolerant microbial agent purchased from Fengda Saltwater Technology Development (Shandong) Co., Ltd.

[0027] Field management should follow the local routine operating procedures for this crop, and attention should be paid to timely prevention and control of diseases, pests and weeds.

[0028] Beneficial effects:

[0029] This invention utilizes a planting technique in saline-alkali land with its original soil and water, eliminating the need for imported soil and large amounts of freshwater resources. It also avoids complex remediation projects, thus saving on costs. While enabling farmers to freely obtain yields and economic benefits, it gradually and effectively improves saline-alkali land, making a positive contribution to solving the problems of crop cultivation on such land. Detailed Implementation

[0030] Example 1:

[0031] In July 2024, a 0.67-hectare saline-alkali land base in a certain industrial park in Kashgar City was planted with sunflowers (seeds were purchased from the local market). The implementation steps were as follows:

[0032] 1) Level the saline-alkali land where sunflowers need to be planted. No soil needs to be added. Just dig drainage ditches to ensure smooth irrigation and drainage and prevent water accumulation.

[0033] 2) Mixed soil samples were collected on-site according to the technical requirements of HJ / T 166-2004, and the soil salinity was measured to be 14.15 g / kg after air drying, grinding, and sieving, with a salt damage level of V and a pH value of 8.11.

[0034] 3) Dig trenches, 15cm deep and 15cm wide at the bottom, with row spacing of 100cm and 40cm respectively;

[0035] 4) Based on the results, apply 1425 kg of soil conditioner, 150 kg of soil remediation agent, and 1425 kg of soil conditioning fertilizer evenly per hectare. The soil conditioner consists of 70% organic matter and 30% mineral powder, with the mineral powder comprising the following components by weight: 30 parts volcanic ash, 15 parts potassium feldspar, 20 parts maifanite, 10 parts zeolite, 10 parts diatomaceous earth, 5 parts Bianstone, 7 parts calcite, and 3 parts basalt. The soil remediation agent consists of the following components: 30 g / L humic acid, 0.5 g / L cellulase, 200 million CFU / g of viable bacteria, Bacillus laterosporus (Shandong Yihao Biotechnology Co., Ltd.), 2.0 g / L glutamic acid, and 0.5 g / L coenzyme A. The soil conditioner contains 25% diatomaceous earth, 40% organic matter, with an effective live bacteria count of no less than 0.2 billion / g, a moisture content of no more than 30%, and all heavy metals in the soil are within normal standards. It also contains Bacillus subtilis (Shandong Yihao Biotechnology Co., Ltd.) and Bacillus spp. (Kunming Zichen Agricultural Biotechnology Co., Ltd.).

[0036] 5) Lay drip irrigation tape; irrigate with local well water, sow seeds in furrows at a spacing of 20cm, and thin out seedlings to maintain a plant spacing of 40cm when seedlings reach 25cm in height. When sowing, ensure the pointed end of the seed is facing down into the soil. The well water should have a salt content of 0.3%. Sunflower seeds should be sun-dried for 1-2 days before sowing to improve germination rate.

[0037] 6) Subsequently, apply a diluted solution of salt-tolerant / halophilic bacteria agent by drip irrigation. Dilute 45 kg of the stock solution of salt-tolerant / halophilic bacteria agent with well water 100 times per hectare each time and apply by drip irrigation. On the 3rd, 9th, 20th and 36th days, apply a diluted solution of salt-tolerant / halophilic bacteria agent 200 times. Keep the soil in the furrow moist during the sunflower growing season, and pay attention to timely weeding and prevention and control of diseases and pests.

[0038] The sunflower seed yield was 2610 kg / hm² 2 The soil salinity was measured to be 4.36 g / kg, and the pH value was 7.66.

[0039] Example 2:

[0040] In 2021, a rice planting experiment was conducted on 0.167 hectares of land at the Dongying District base in Dongying City, Shandong Province, with sowing in mid-April.

[0041] 1) Level the land on-site and ensure proper drainage and irrigation ditches to prevent waterlogging. Collect mixed soil samples on-site according to the technical requirements of HJ / T 166-2004. The local soil salinity was measured to be 5.46 g / kg, the salinity level was IV, and the pH value was 8.2. Irrigate with brackish water from local ditches, with a salinity between 0.3% and 1.5%.

[0042] 2) Make furrows and ridges, with furrows 30cm wide and 30cm deep, and ridges 120cm wide. Plant 4 rows of rice, with row spacing of 30cm and plant spacing of 18cm.

[0043] 3) Apply 645 kg of soil conditioner, 90 kg of soil remediation agent, and 780 kg of soil conditioning fertilizer evenly per hectare. The soil conditioner consists of 70% organic matter and 30% mineral powder, with the mineral powder comprising the following components by weight: 20 parts volcanic ash, 15 parts potassium feldspar, 30 parts maifanite, 10 parts zeolite, 5 parts diatomaceous earth, 10 parts Bianstone, 7 parts calcite, and 3 parts basalt. The soil remediation agent includes 30 g / L humic acid, 0.5 g / L cellulase, 200 million CFU / g of viable bacteria, Bacillus laterosporus (Shandong Yihao Biotechnology Co., Ltd.), 2.0 g / L glutamic acid, and 0.5 g / L coenzyme A. The soil conditioner contains 25% diatomaceous earth, 40% organic matter, with an effective live bacteria count of no less than 0.2 billion CFU / g, a moisture content of no more than 30%, and all soil heavy metals are within normal standards. It also contains Bacillus subtilis (Shandong Yihao Biotechnology Co., Ltd.) and Bacillus spp. (Kunming Zichen Agricultural Biotechnology Co., Ltd.).

[0044] 4) Lay out drip irrigation tape, irrigate, and then sow 2-3 seeds per hole at a depth of about 1cm, and then cover with a thin layer of soil;

[0045] 5) Subsequently, take 30 kg of salt-tolerant / halophilic bacteria agent and 4500 kg of brackish water per hectare, mix and dilute them, and apply them by drip. Similarly, on the 3rd, 10th, 20th and 36th days, take 30 kg of salt-tolerant / halophilic bacteria agent and 9000 kg of brackish water, mix and dilute them, and apply them by drip. During this period, follow the principle of alternating between dry and wet conditions for rice, ensure water supply during the water-sensitive period, and pay attention to timely weeding and prevention and control of diseases and pests.

[0046] Harvested on September 18th, yielding a yield of 4677 kg / hm². 2 The soil salinity was measured to be 1.75 g / kg, and the pH value was 7.7.

[0047] Example 3:

[0048] In November 2023, the rapeseed planting cooperative base in Potou District, Zhanjiang City, Guangdong Province, planted 5.33 hectares of rapeseed.

[0049] 1) After leveling the land, the mixed soil was taken. According to the standard, the soil salt content was measured in the laboratory to be 8.64 g / kg, the salt damage level was IV, the pH value was 3.8, and the water source was general farmland irrigation water.

[0050] 2) Create raised beds, 90cm wide and 20cm high, planting 4 rows per bed with wide rows 40cm apart and narrow rows 22cm apart, with a plant spacing of 18-20cm. 3) Apply 930kg of soil conditioner, 90kg of soil remediation agent, and 1120kg of soil conditioning fertilizer per hectare. The soil conditioner consists of 70% organic matter and 30% mineral powder, with the following weight percentages: 25 parts volcanic ash, 15 parts potassium feldspar, 30 parts maifanite, 10 parts zeolite, 5 parts diatomaceous earth, 5 parts Bianstone, 5 parts calcite, and 5 parts basalt. The soil remediation agent includes 30g / L humic acid, 0.5g / L cellulase, 200 million CFU / g of viable bacteria, Bacillus laterosporus (Shandong Yihao Biotechnology Co., Ltd.), 2.0g / L glutamic acid, and 0.5g / L coenzyme A. The soil conditioner contains 25% diatomaceous earth, 40% organic matter, with an effective live bacteria count of no less than 0.2 billion CFU / g, a moisture content of no more than 30%, and all soil heavy metals are within normal standards. It also contains Bacillus subtilis (Shandong Yihao Biotechnology Co., Ltd.) and Bacillus spp. (Kunming Zichen Agricultural Biotechnology Co., Ltd.).

[0051] 4) Lay drip irrigation tape between two narrow rows, irrigate, make shallow furrows about 2cm deep at the sowing site, mix the seeds and fine sand evenly and sow them, and cover with a thin layer of soil after sowing.

[0052] 5) Subsequently, mix and dilute 30 kg of salt-tolerant / halophilic bacteria agent and 4500 kg of irrigation water per hectare and apply by drip irrigation. Similarly, on days 3, 10, 20 and 36, apply 30 kg of salt-tolerant / halophilic bacteria agent and 9000 kg of irrigation water by drip irrigation. Keep the soil moist during this period and ensure the necessary water supply during the water-sensitive period. At the same time, pay attention to thinning, timely weeding and prevention and control of diseases and pests.

[0053] At harvest, the rapeseed yield was 2742 kg / hm². 2 The soil salinity is 2.89 g / kg, and the pH value is 5.46.

[0054] Example 4:

[0055] On October 12, 2024, 0.467 hectares of winter wheat variety "Jimai 22" were sown at the Binzhou National High-tech Agricultural Science and Technology Park in Shandong Province.

[0056] 1) After leveling the land, ensure proper drainage and irrigation ditches to prevent waterlogging. According to the technical requirements of HJ / T 166-2004, mixed soil samples were collected on-site. The local soil salinity was measured to be 5.6–8.2 g / kg, with a salinity level of IV, and a pH of 8.0. The irrigation water was a mixture of local river and canal water, with a salinity of 0.65%–0.89%.

[0057] 2) Make flat beds, 1.5m wide, and sow in rows with a row spacing of 15cm.

[0058] 3) Apply 930 kg of soil conditioner, 90 kg of soil remediation agent, and 1120 kg of soil conditioning fertilizer per hectare. The soil conditioner consists of 70% organic matter and 30% mineral powder, with the following weight percentages of mineral powder: 25 parts volcanic ash, 15 parts potassium feldspar, 30 parts maifanite, 10 parts zeolite, 5 parts diatomaceous earth, 5 parts Bianstone, 5 parts calcite, and 5 parts basalt. The soil remediation agent includes 30 g / L humic acid, 0.5 g / L cellulase, 200 million CFU / g of viable bacteria, Bacillus laterosporus (Shandong Yihao Biotechnology Co., Ltd.), 2.0 g / L glutamic acid, and 0.5 g / L coenzyme A. The soil conditioner contains 25% diatomaceous earth, 40% organic matter, with an effective live bacteria count of no less than 0.2 billion CFU / g, a moisture content of no more than 30%, and all soil heavy metals are within normal standards. It also contains Bacillus subtilis (Shandong Yihao Biotechnology Co., Ltd.) and Bacillus spp. (Kunming Zichen Agricultural Biotechnology Co., Ltd.).

[0059] 4) Drip irrigation tape should be laid simultaneously with sowing. One tape should be laid for every four rows of wheat, with a spacing of 60cm between tapes. Irrigate promptly after sowing.

[0060] 5) Subsequently, mix and dilute 30 kg of halophilic / salt-tolerant bacteria agent with 4500 kg of irrigation water per hectare and apply by drip irrigation. Similarly, apply 30 kg of halophilic / salt-tolerant bacteria agent and 9000 kg of irrigation water by drip irrigation on days 3, 10, 22, and 37, respectively. During the water-sensitive stages of crop growth, ensure the necessary amount of irrigation water is provided, while avoiding irrigation when the temperature is below zero to prevent damage to seedlings from ground freezing. Except for irrigation during overwintering, each irrigation should follow the principle of ensuring complete infiltration of water on the same day and preventing surface runoff. At the same time, timely weeding should be carried out, and measures should be taken to control pests and diseases.

[0061] Yield measurement and acceptance were conducted, yielding an equivalent dry weight of 5806.5 kg / hm² for wheat. 2 The soil salinity is 3.83 g / kg, and the pH value is 7.78.

Claims

1. A method for improving planting in saline-alkali land using original soil and water, characterized in that, Includes the following steps: Step 1: Level the land to ensure smooth irrigation and drainage and prevent waterlogging; Step 2: Based on the actual crop cultivation conditions, dig furrows and make ridges or furrows. Apply 150-1500 kg of mineral conditioner, 30-150 kg of soil repair agent, and 450-1500 kg of soil biological conditioner per hectare, according to the degree of soil salinity and salt content. Then rake the soil level. Step 3: Lay drip irrigation tape, irrigate, and sow seeds. The water used for irrigation should be fresh water, slightly brackish water, or bitter water. Step 4: Apply 15-45 kg / hm² of undiluted halophilic / salt-tolerant bacterial agent stock solution each time. 2 For the first application, dilute the bacterial agent stock solution to water at a ratio of 1:100 to 300. For subsequent applications, dilute the stock solution to water at a ratio of 1:200 to 600. Stir well and apply the diluted solution through a drip irrigation belt.

2. The method for improving and planting in saline-alkali land with original soil and water according to claim 1, characterized in that, The salinity and salt content of farmland soil were obtained by conducting on-site investigations before land preparation and collecting soil samples according to the technical requirements of HJ / T 166-2004. The collected soil samples were then tested and analyzed according to conventional soil physicochemical property indicators.

3. The method for improving and planting in saline-alkali land with original soil and water according to claim 1, characterized in that, The mineral conditioning and amendment agent mentioned in step 2 is composed of organic matter and mineral powder in a weight ratio of 1-5:

1. The mineral powder includes the following components by weight fraction: 20-35 parts volcanic ash, 5-15 parts potassium feldspar, 20-30 parts maifanite, 8-12 parts zeolite, 5-15 parts diatomaceous earth, 5-10 parts Bianstone, 3-7 parts calcite, and 1-5 parts basalt. The soil remediation agent includes 20-40 g / L organic complexing agent, 0.3-0.8 g / L metalloproteinase, 1.0-3.0 g / L glutamic acid, 0.3-1.0 g / L biological coenzyme, and 150 million-300 million CFU / g of effective live bacteria, wherein the effective live bacteria are commercially available Bacillus laterosporus.

4. The method according to claim 3, characterized in that, The following table shows the relationship between the application rates of the mineral conditioner and soil remediation agent mentioned in step 2 and the degree of soil salinity and soil salt content: 。 5. The method for improving and planting in saline-alkali land with original soil and water according to claim 1, characterized in that, The soil biological conditioning fertilizer mentioned in step 2 includes organic matter and effective live bacteria, of which 25% is diatomaceous earth, the proportion of organic matter is more than 40%, and the number of effective live bacteria is not less than 0.2 billion CFU / g; the effective live bacteria are commercially available Bacillus subtilis and Bacillus spp.

6. The method for improving and planting in saline-alkali land with original soil and water according to claim 5, characterized in that, The relationship between the application of soil biological conditioning fertilizer in step 2 and the degree of soil salinity and soil salinity content is shown in the table below: 。 7. The method for improving and planting in saline-alkali land with original soil and water according to claim 1, characterized in that, The crops planted in step 2 are selected from food crops, cash crops, and vegetables.

8. The method for improving and planting in saline-alkali land with original soil and water according to claim 1, characterized in that, In step 2, the organic complexing agent in the soil remediation agent is selected from humic acid, the metalloproteinase is selected from cellulase, and the biological coenzyme is selected from coenzyme A.

9. The method for improving and planting in saline-alkali land with original soil and water according to claim 1, characterized in that, The following table shows the correspondence between the application rate of the halophilic / tolerant bacterial agent, the dilution ratio for each application, and the degree of soil salinity and soil salinity content in step 4:

10. The method for improving and planting in saline-alkali land with original soil and water according to claim 8, characterized in that, The application times in step 4 are as follows: the first application is after the seedlings have emerged from the drip irrigation; the second application is on the 2nd to 3rd day after sowing; the third application is on the 7th to 10th day after sowing; the fourth application is on the 20th to 22nd day after sowing; and the fifth application is on the 35th to 37th day after sowing.

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