Method for improving productivity of degraded grazing grassland

Abstract

The invention provides a method for improving the productivity of degraded grazing grassland, and belongs to the technical field of grassland restoration. The method comprises the following steps that water and fertilizer automatic management devices are installed on the grazing grassland needing to be repaired every 2 m; the gramineous forage grass is sown in ditches, then the two kinds of leguminous forage grass are evenly mixed, and the mixed forage grass and the gramineous forage grass are sown in a cross mode; a wireless sensor system is arranged in the automatic water and fertilizer management device, the soil moisture content, the soil nutrient content and the vegetation growth condition are monitored through the wireless sensor system, and precise irrigation and precise fertilization are conducted according to monitoring data. By means of the measures of intelligent fertilization irrigation and no-tillage reseeding, the productivity of the degraded grassland is improved. The fertilization time, the use amount and the field moisture capacity of the grass on the grassland are strictly controlled, so that the absorption of the grass on the grassland to nutritional ingredients can be promoted, and the productivity of the grassland and the yield of the grass are further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of grassland restoration, and in particular relates to a method for improving the productivity of degraded grazing grassland. Background Art

[0002] Grassland is an important part of the terrestrial ecosystem. Due to unreasonable development and utilization such as overgrazing and continuous mowing, the nutrients in grassland soil are rapidly consumed, the vegetation is seriously degraded, the grass yield of grassland is reduced, and the carrying capacity of livestock is reduced, which seriously affects agricultural and animal husbandry production and restricts the sustainable use of land resources. If certain measures are not taken to restore and improve the productivity of degraded grassland, it will not only seriously affect the healthy development of grassland animal husbandry, but also the ecological service function of grassland will continue to decline. Rapidly improving the productivity of degraded grassland is a difficult task. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a method for improving the productivity of degraded grazing grassland, which can promote the absorption of nutrients by grassland forage and improve the productivity of the grassland and the yield of forage.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] A method for improving the productivity of degraded grazing grassland comprises the following steps:

[0006] Install an automatic water and fertilizer management device every 2 meters on the grazing grassland that needs to be repaired; carry out no-tillage grass sowing: sow grass in furrows, then mix the two legume grasses evenly and sow them crosswise with the grass grass;

[0007] A wireless sensor system is provided in the automatic water and fertilizer management device, and the wireless sensor system is used to monitor the soil moisture content, soil nutrient content and vegetation growth status, and precise irrigation and precise fertilization are performed according to the monitoring data.

[0008] Preferably, the wireless sensor system performs irrigation when the soil moisture content is lower than 60% of the field water holding capacity; and the irrigation is stopped when the soil moisture content is higher than 80% of the field water holding capacity.

[0009] Preferably, when the wireless sensor system monitors the soil nutrient content and finds that the available phosphorus is lower than 10 mg / kg, the available nitrogen is lower than 15 mg / kg and the available potassium is lower than 100 mg / kg, topdressing is performed.

[0010] Preferably, the topdressing is: when the coverage ratio of leguminous forage in the vegetation is 30% to 70%, topdressing organic fertilizer 8 to 10 kg / mu + nitrogen fertilizer 8 to 10 kg / mu + P2O5 5 kg / mu;

[0011] When the coverage ratio of leguminous grass in vegetation is greater than 70%, apply 8-10kg / mu of organic fertilizer + 10.4-15kg / mu of nitrogen fertilizer + 55kg / mu of P2O;

[0012] When the coverage ratio of leguminous forage in vegetation is less than 30%, apply 8-10kg / mu of organic fertilizer + 8-10kg / mu of nitrogen fertilizer + 6.5-7.5kg / mu of P2O5.

[0013] Preferably, the grass is any one of oats, Elymus dahliae, Bromus sinensis, Triticale and Agropyron truncatum.

[0014] Preferably, the leguminous forage grass is any two of: sainfoin, red clover, Medicago truncatula, Lotus japonica and hairy vetch.

[0015] Preferably, the sowing rate of the gramineous grass is 7-9 kg / mu, and the sowing rate of the two leguminous grasses is 2-4 kg / mu.

[0016] Another object of the present invention is to provide an automatic water and fertilizer management device, comprising a solar panel (1), a camera (2), a wireless signal device (3), a fertilization system, an irrigation system and a sensor system;

[0017] The fertilization system comprises a fertilization pipe (5), a fertilizer storage device (7) and a fertilizer intelligent switch (11); the fertilizer storage device (7) is connected to the fertilization pipe (5); the fertilizer intelligent switch (11) is arranged on the fertilization pipe (5); the data of soil nutrient content monitored by the sensor system is fed back to the central control system through the wireless signal device (3); and the central control system controls the opening and closing of the fertilizer intelligent switch (11) through the wireless signal device (3);

[0018] The irrigation system comprises a micro-spraying pipe (4), a water storage device (6) and a micro-spraying intelligent switch (10); the water storage device (6) is connected to the micro-spraying pipe (4); the micro-spraying intelligent switch (10) is arranged on the micro-spraying pipe (4); the data of soil moisture content monitored by the sensor system is fed back to the central control system through the wireless signal device (3); and the central control system controls the opening and closing of the micro-spraying intelligent switch (10) through the wireless signal device (3).

[0019] Preferably, the sensor system comprises a soil detection sensor system, and the soil detection sensor system is located within a 0-10 cm soil layer of the grazing grassland soil.

[0020] Preferably, the water storage tank (6) and the fertilizer storage tank (7) are detachably connected to form an integrated structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides a method for improving the productivity of degraded grazing grassland. The present invention utilizes the supplementary irrigation water-fertilizer coupling technology to achieve scientific and rational use of grassland and increase the carrying capacity of grassland. The present invention improves the productivity of degraded grassland through intelligent fertilization irrigation and no-tillage reseeding measures. The fertilization time, amount and field water holding capacity of the grass on the grassland are strictly controlled, which can promote the absorption of nutrients by the grassland grass, thereby improving the productivity of the grassland and the yield of the grass. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an automatic water and fertilizer management device, including: 1. solar panel; 2. camera; 3. wireless signal device; 4. micro spray tube; 5. fertilizer tube; 6. water storage tank; 7. fertilizer storage tank; 8. soil moisture monitoring; 9. soil nutrient monitoring; 10. micro spray intelligent switch; 11. fertilizer intelligent switch;

[0024] Figure 2 The grazing grassland restored by the method provided in Example 1;

[0025] Figure 3 The grazing grassland restored by the method provided in Comparative Example 1;

[0026] Figure 4 is the aboveground biomass after treatment with different methods, different lowercase letters indicate significant differences (P<0.05);

[0027] Figure 5 The vegetation coverage of the communities after treatment with different methods. Different lowercase letters indicate significant differences (P<0.05). DETAILED DESCRIPTION

[0028] The present invention provides a method for improving the productivity of degraded grazing grassland, comprising the following steps: installing an automatic water and fertilizer management device every 2m on the grazing grassland that needs to be repaired; performing no-tillage grass sowing: furrow sowing of gramineous grass, then mixing two legume grasses evenly, and cross-sowing with gramineous grass; a wireless sensor system is arranged in the automatic water and fertilizer management device, and the wireless sensor system is used to monitor soil moisture content, soil nutrient content and vegetation growth status, and precise irrigation and precise fertilization are performed according to the monitoring data.

[0029] In the present invention, the grass is selected from any one of oats, Elymus davidianus, Bromus arvense, Triticale and Agropyron truncatum, and the sowing rate of the grass is 7-9 kg / mu, preferably 8 kg / mu; the leguminous grass is selected from any two of pea, red bean grass, Medicago truncatula, Lotus japonica and Vetch, and when the leguminous grass is sown, the sowing rate of each leguminous grass is 2-4 kg / mu, preferably 3 kg / mu. As an practicable method, the present invention uses an "inverted T" type furrow opener to sow grass seeds.

[0030] The present invention sows grass and legume grass in a cross-cross manner, which can improve the ventilation and air permeability of the grassland during the grass growing season, and can ensure that the legume grass has sufficient light to avoid the shading effect of the grass. At the same time, the present invention selects two legume grasses for mixed sowing, which can improve soil fertility, increase biodiversity and enhance stress resistance.

[0031] After the forage grass is sown, 3-6 kg / mu of diammonium phosphate is spread, preferably 5 kg / mu of diammonium phosphate is spread.

[0032] The method provided by the present invention preferably repairs degraded grazing grassland during the grazing rest period; preferably, the grazing grassland that needs to be repaired is enclosed by a fence. As an implementable method, the present invention uses an electronic fence.

[0033] In the present invention, the wireless sensor system performs irrigation when the soil moisture content is lower than 60% of the field water holding capacity; the irrigation is stopped when the soil moisture content is higher than 80% of the field water holding capacity.

[0034] In the present invention, when the wireless sensor system monitors the soil nutrient content, the available phosphorus is lower than 10 mg / kg, the available nitrogen is lower than 15 mg / kg, and the available potassium is lower than 100 mg / kg, topdressing is performed. The topdressing is: when the coverage ratio of leguminous forage in the vegetation is 30% to 70%, topdressing organic fertilizer 8 to 10 kg / mu + nitrogen fertilizer 8 to 10 kg / mu + P2O5 5 kg / mu; when the coverage ratio of leguminous forage in the vegetation is greater than 70%, topdressing organic fertilizer 8 to 10 kg / mu + nitrogen fertilizer 10.4 to 15 kg / mu + P2O5 5 kg / mu; when the coverage ratio of leguminous forage in the vegetation is less than 30%, topdressing organic fertilizer 8 to 10 kg / mu + nitrogen fertilizer 8 to 10 kg / mu + P2O5 6.5 to 7.5 kg / mu.

[0035] In the present invention, the type of nitrogen fertilizer is conventional nitrogen fertilizer (N>46%), and as an implementable method, the conventional nitrogen fertilizer is urea (N>46%). The type of organic fertilizer is compound microbial fertilizer, with organic matter ≥40%, effective viable bacteria count ≥20 million / gram, and N2+P2O5+K2O ≥8%. The compound microbial fertilizer in the specific embodiment of the present invention is purchased from Ningxia Wufeng Agricultural Technology Co., Ltd.

[0036] The present invention can maintain the coverage ratio of leguminous forage grass to gramineous forage grass in vegetation at about 1:1 through topdressing, thereby optimizing nutrient utilization, increasing forage grass yield and quality, improving soil structure and enhancing stress resistance.

[0037] Another object of the present invention is to provide an automatic water and fertilizer management device, comprising a solar panel 1, a camera 2, a wireless signal device 3, a fertilization system, an irrigation system and a sensor system (such as Figure 1 The solar panel can provide power support for the automatic water and fertilizer management device of the present invention.

[0038] In the present invention, Figure 1 As shown, the fertilization system includes a fertilization pipe 5, a fertilizer storage 7 and a fertilizer intelligent switch 11. The fertilizer storage 7 is connected to the fertilization pipe 5, and the fertilizer intelligent switch 11 is arranged on the fertilization pipe 5. The data of soil nutrient content monitored by the sensor system is fed back to the central control system through the wireless signal device 3, and the central control system controls the opening and closing of the fertilizer intelligent switch 11 through the wireless signal device 3. During the growing season of forage, the present invention monitors the data of soil nutrient content in real time and transmits it to the central control system for analysis. When the soil nutrient content is lower than a preset threshold, the fertilizer intelligent switch 11 is controlled to be turned on through the wireless signal device 3 to carry out topdressing.

[0039] The present invention monitors the growth conditions of leguminous forage and gramineous forage by using a camera, obtains the coverage ratio of leguminous forage and gramineous forage by adopting a needle puncture method, and applies different types of fertilizers in a targeted manner according to the coverage ratio of leguminous forage and gramineous forage.

[0040] In the present invention, Figure 1 As shown, the irrigation system includes a micro-spraying pipe 4, a water reservoir 6 and a micro-spraying intelligent switch 10, wherein the water reservoir 6 is connected to the micro-spraying pipe 4, and the micro-spraying intelligent switch 10 is arranged on the micro-spraying pipe 4. The data of the soil moisture content monitored by the sensor system is fed back to the central control system through the wireless signal device 3, and the central control system controls the opening and closing of the micro-spraying intelligent switch 10 through the wireless signal device 3. The present invention collects the data of the soil moisture content in real time after the sowing of forage grass, and transmits it to the central control system for analysis. When the soil moisture content deviates from the optimum range, the micro-spraying intelligent switch 10 is controlled to be turned on through the wireless signal device 3 to irrigate.

[0041] The central controller in the present invention is responsible for receiving and processing data and issuing control instructions. The data of the central controller can be monitored in real time by the client, and the central controller can be remotely controlled by the client after analyzing the monitoring data.

[0042] In the present invention, the sensor system includes a soil detection sensor system, and the soil detection sensor system is located in the 0-10 cm soil layer of the grazing grassland soil. In the specific embodiment of the present invention, the soil detection sensor is a Zhaotaisheng soil seven-in-one detector ZTS-3002-TR-ECTHNPKPH-N01, which can be used to monitor soil moisture, soil temperature, soil EC value, soil pH value and the content of available phosphorus, available potassium and available nitrogen in the soil in real time.

[0043] In the present invention, the water storage 6 and the fertilizer storage 7 are detachably connected to form an integrated structure.

[0044] The present invention utilizes intelligent monitoring, precise fertilization and irrigation, and scientific management strategies to achieve efficient management and ecological restoration of degraded grazing grasslands, which not only increases forage yields and soil fertility, but also promotes the healthy and stable development of agricultural ecosystems, providing an innovative and feasible solution to the problem of grassland degradation.

[0045] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0046] Example 1

[0047] A method for improving the productivity of degraded grazing grassland, comprising the following steps:

[0048] During the off-grazing period, the grazing grasslands that need to be repaired are identified, enclosed with electronic fences, and an automatic water and fertilizer management device is installed every 2 meters on the grazing grasslands that need to be repaired.

[0049] No-tillage sowing of pasture grass in grazing grassland: oats were sown with an "inverted T" type furrow opener at a sowing rate of 8kg / mu; after mixing arrow peas (3kg / mu) and red bean grass (3kg / mu), they were sown with oats in a cross pattern using an "inverted T" type furrow opener. After sowing pasture grass, 5kg / mu of diammonium phosphate was spread.

[0050] A wireless sensor system is set in the automatic water and fertilizer management device. When the wireless sensor system monitors that the soil moisture content is lower than 60% of the field water holding capacity, irrigation is carried out, and irrigation is stopped when the soil moisture content is higher than 80% of the field water holding capacity. During the forage growing season, when the wireless sensor system monitors that the soil nutrient content is lower than 10mg / kg for available phosphorus, lower than 15mg / kg for available nitrogen and lower than 100mg / kg for available potassium, topdressing is carried out: the coverage ratio of leguminous forage in vegetation is 30% When the coverage ratio of leguminous forage in vegetation is >70%, apply 10kg / mu of organic fertilizer + 9kg / mu of urea (N>46%) + 55kg / mu of P2O5 as topdressing; when the coverage ratio of leguminous forage in vegetation is >70%, apply 10kg / mu of organic fertilizer + 11.7kg / mu of urea (N>46%) + 55kg / mu of P2O5 as topdressing; when the coverage ratio of leguminous forage in vegetation is <30%, apply 10kg / mu of organic fertilizer + 9kg / mu of urea (N>46%) + 6.5kg / mu of P2O5 as topdressing.

[0051] 90 days after fencing, the vegetation growth on the restored grazing grassland is as follows: Figure 2 shown.

[0052] Example 2

[0053] A method for improving the productivity of degraded grazing grassland. The difference between this embodiment and embodiment 1 is that when the coverage ratio of leguminous forage in vegetation is greater than 70%, 10kg / mu of organic fertilizer + 13.5kg / mu of urea (N>46%) + 55kg / mu of P2O are applied; when the coverage ratio of leguminous forage in vegetation is less than 30%, 10kg / mu of organic fertilizer + 10kg / mu of urea (N>46%) + 7.5kg / mu of P2O are applied.

[0054] Example 3

[0055] A method for improving the productivity of degraded grazing grassland. The difference between this embodiment and embodiment 1 is that the grass forage is red fescue, and the leguminous forage is alfalfa and pea.

[0056] Comparative Example 1

[0057] The difference between this comparative example and Example 1 is that only the grazing grassland that needs to be repaired is enclosed by an electronic fence, no automatic water and fertilizer management device is installed, and no forage grass is reseeded.

[0058] 90 days after the enclosure, the vegetation growth status of the grazing grassland that needs to be restored is as follows: Figure 3 shown.

[0059] Comparative Example 2

[0060] The difference between this comparative example and Example 1 is that when the coverage ratio of leguminous forage in the vegetation is greater than 70%, 10 kg / mu of organic fertilizer + 9 kg / mu of urea (N>46%) + 55 kg / mu of P2O are applied.

[0061] Comparative Example 3

[0062] The difference between this comparative example and Example 1 is that when the coverage ratio of leguminous forage in the vegetation is less than 30%, 10 kg / mu of organic fertilizer + 9 kg / mu of urea (N>46%) + 55 kg / mu of P2O are applied as topdressing.

[0063] Comparative Example 4

[0064] The difference between this comparative example and Example 1 is that no urea was applied during topdressing.

[0065] Comparative Example 5

[0066] The difference between this comparative example and Example 1 is that no organic fertilizer was applied during topdressing.

[0067] Comparative Example 6

[0068] The difference between this comparative example and embodiment 1 is that no topdressing was performed.

[0069] Example 4

[0070] This example compares the effects of different methods on the productivity of degraded grazing grassland.

[0071] The methods in Examples 1 to 3 and Comparative Examples 1 to 6 were respectively used to repair the grazing grassland:

[0072] The test site is in the degraded grazing grassland of Zhaosu County, Xinjiang, and the test time is from May 2024 to August 2024.

[0073] The survey was conducted in mid-August when plants were growing vigorously. The plant survey method was to randomly select 3 plots from each plot for population survey. The plot area was 1m 2 (1m×1m), the survey content includes plant species composition, cover, height, and aboveground biomass. Among them, the needle puncture method is used to estimate the cover, and the natural height of each plant in each sample plot is measured with a steel tape measure. The aboveground biomass is collected by collecting each species in the sample plot at the ground level, and each species is classified and put into an envelope, and then brought back to the laboratory to be baked at 65℃ until constant weight is weighed. Grassland plants are divided into three different functional groups: Grass, Legume and Forb.

[0074] The vegetation growth condition on the grazing grassland restored by the method provided in Example 1 of the present invention is as follows: Figure 2 As shown, the vegetation growth condition on the grazing grassland restored by the method provided in Comparative Example 1 is as follows Figure 3 It can be seen that the present invention effectively promotes the growth of forage grass and increases the yield of forage grass.

[0075] After the grazing grassland was restored by different methods, the results of community vegetation coverage, height, density and aboveground biomass are shown in Table 1 and Figure 4-5 shown.

[0076] Table 1 Effects of different methods on restoration of grazing grassland

[0077] deal with Cover high density Aboveground biomass Example 1 100±0a 299.67±28.29a 248±49.03ab 13040.38±2590.33a Example 2 95.33±0.33bc 210.67±6.36b 256.33±5.84ab 12754.51±1956.76bc Example 3 98±1.15ab 222±17.93b 284.33±27.39a 10007.05±547.35ab Comparative Example 2 86.67±1.2d 218.67±20.8b 200±0.58b 8370.11±235.4bc Comparative Example 3 84.33±0.88d 190.67±5.21b 187.33±5.61b 7339.08±95.46bc Comparative Example 4 87.33±0.88d 214.33±8.09b 185±7.64b 9299.45±1042.1ab Comparative Example 5 86.33±0.33d 238.33±11.33b 279±18.15a 8497.05±514.11bc Comparative Example 6 91.67±1.67c 130±3.61c 186.33±24.26b 4997.7±907.91cd Comparative Example 1 85±2.89d 52.37±11.91d 209.67±28.81ab 2906.79±356.23d

[0078] Note: Data without letters or with the same letters indicate no significant difference (P>0.05), and data with different letters indicate significant difference (P<0.05)

[0079] After restoration of grazed grassland by different methods, aboveground biomass Figure 4 As shown in Figure 5 The aboveground biomass of Example 1 of the present invention reached the highest level, which was 13040 kg / hectare, which was 10134 kg / hectare higher than that of the control group 1. Figure 5 It can be seen that the coverage of Example 1 was 100%, which was 15% higher than that of Comparative Example 1. The coverage of Example 2 was 10% higher than that of Comparative Example 1, and the coverage of Example 3 was 13% higher than that of Comparative Example 1. The method provided by the present invention strictly controls the fertilization time, amount and field water holding capacity of the forage on the grassland, which can promote the absorption of nutrients by the grassland forage, thereby improving the productivity of the grassland and the yield of the forage.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for improving the productivity of degraded grazing grassland, characterized in that: The steps include: Install an automatic water and fertilizer management device every 2 meters on the grazing grassland that needs to be repaired; carry out no-tillage grass sowing: sow grass in furrows, then mix the two legume grasses evenly and sow them crosswise with the grass grass; A wireless sensor system is provided in the automatic water and fertilizer management device, and the wireless sensor system is used to monitor the soil moisture content, soil nutrient content and vegetation growth status, and precise irrigation and precise fertilization are performed according to the monitoring data.

2. The method according to claim 1, characterized in that The wireless sensor system monitors that the soil moisture content is lower than 60% of the field water holding capacity and performs irrigation; the irrigation is stopped when the soil moisture content is higher than 80% of the field water holding capacity.

3. The method according to claim 1, characterized in that When the wireless sensor system monitors the soil nutrient content and finds that the available phosphorus is lower than 10 mg / kg, the available nitrogen is lower than 15 mg / kg and the available potassium is lower than 100 mg / kg, topdressing is performed.

4. The method according to claim 3, characterized in that The topdressing is: when the coverage ratio of leguminous forage in the vegetation is 30% to 70%, apply 8 to 10 kg / mu of organic fertilizer + 8 to 10 kg / mu of nitrogen fertilizer + 55 kg / mu of P2O; When the coverage ratio of leguminous grass in vegetation is greater than 70%, apply 8-10kg / mu of organic fertilizer + 10.4-15kg / mu of nitrogen fertilizer + 55kg / mu of P2O; When the coverage ratio of leguminous forage in vegetation is less than 30%, apply 8-10kg / mu of organic fertilizer + 8-10kg / mu of nitrogen fertilizer + 6.5-7.5kg / mu of P2O5.

5. The method according to claim 1, characterized in that The grass is any one of oats, Elymus dahliae, Bromus sinensis, Triticale and Agropyron truncatum.

6. The method according to claim 1, characterized in that The leguminous forage grass is any two of the following: sainfoin, sainfoin, lucerne, lotus root, and hairy vetch.

7. The method according to claim 1, characterized in that The sowing amount of the gramineous grass is 7-9 kg / mu, and the sowing amount of the two leguminous grasses is 2-4 kg / mu.

8. An automatic water and fertilizer management device as claimed in claim 1, characterized in that: It includes a solar panel (1), a camera (2), a wireless signal device (3), a fertilization system, an irrigation system and a wireless sensor system; The fertilization system comprises a fertilization pipe (5), a fertilizer storage device (7) and a fertilizer intelligent switch (11); the fertilizer storage device (7) is connected to the fertilization pipe (5); the fertilizer intelligent switch (11) is arranged on the fertilization pipe (5); the data of soil nutrient content monitored by the sensor system is fed back to the central control system through the wireless signal device (3); and the central control system controls the opening and closing of the fertilizer intelligent switch (11) through the wireless signal device (3); The irrigation system comprises a micro-spraying pipe (4), a water storage device (6) and a micro-spraying intelligent switch (10); the water storage device (6) is connected to the micro-spraying pipe (4); the micro-spraying intelligent switch (10) is arranged on the micro-spraying pipe (4); the data of soil moisture content monitored by the sensor system is fed back to the central control system through the wireless signal device (3); and the central control system controls the opening and closing of the micro-spraying intelligent switch (10) through the wireless signal device (3).

9. The automatic water and fertilizer management device according to claim 8, characterized in that: The wireless sensor system comprises a soil detection sensor system, and the soil detection sensor system is located in a 0-10 cm soil layer of grazing grassland soil.

10. The automatic water and fertilizer management device according to claim 8, characterized in that: The water storage (6) and the fertilizer storage (7) are detachably connected to form an integrated structure.

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