A wheat planting method based on large-flow wide-spacing drip irrigation tape

Abstract

This invention discloses a wheat planting method based on high-flow, wide-spacing drip irrigation tape, belonging to the field of agricultural technology. By increasing the row spacing of the drip irrigation tape, setting a six-row, one-pipe layout, and calculating a high-flow-rate irrigation of 3L / h, this invention effectively reduces the workload of pipeline laying and recycling, lowers material input, labor costs, and the harmful effects of plastic pollution on farmland. Simultaneously, it achieves wide coverage by increasing the intensity of point source water supply. This avoids excessively high soil temperatures in the topsoil layer caused by traditional irrigation methods, creating a suitable temperature and humidity environment for the roots, delaying aging, and increasing yield. It solves the problems of high material input and labor costs, extremely narrow and deep underground wetlands, and excessively high soil temperatures in the main root layer of wheat caused by dense pipeline laying, emphasis on low-flow irrigation, and poor irrigation methods in existing technologies. It has the potential to be applied to the planting of various crops in arid regions.

Description

Technical Field

[0001] This invention relates to the field of agricultural technology, specifically to a wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape. Background Technology

[0002] Currently, the traditional spring wheat planting method in the Hexi Corridor mostly uses a four-row drip irrigation system. This method requires a huge amount of drip irrigation tape, typically 600-800 meters per acre. This results in a large workload for laying and recycling, especially in areas with low levels of mechanization, where recycling used drip irrigation tape is time-consuming and labor-intensive. Furthermore, if the large amount of plastic pipes is not thoroughly recycled, it can easily cause plastic pollution in farmland. Therefore, optimizing the layout of drip irrigation tape to significantly reduce material input and labor costs is crucial.

[0003] Traditional water-saving irrigation emphasizes small flow rates, but the water from small-flow drip irrigation infiltrates rapidly and vertically, forming a very narrow and deep wet body. In addition, during the wheat grain-filling period, hot and dry winds and high temperatures are often encountered. Mulching irrigation and surface irrigation can lead to excessively high soil temperatures in the topsoil, accelerating root respiration and aging, resulting in a shortened grain-filling period and a decrease in grain weight.

[0004] Therefore, there is an urgent need for a planting model that optimizes the layout of drip irrigation tapes and controls irrigation flow to solve the problems of high cost and low grain weight in traditional wheat cultivation. Summary of the Invention

[0005] Therefore, this invention provides a wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape to solve the problems in the prior art, such as high material input and labor costs due to dense pipeline laying, emphasis on low-flow irrigation, and poor irrigation methods, as well as the problems of extremely narrow and deep underground wet bodies and excessively high ground temperature leading to decreased grain weight.

[0006] To achieve the above objectives, the present invention provides the following technical solution: According to a first aspect of the present invention, a method for wheat cultivation based on high-flow-rate, wide-spacing drip irrigation tape is provided, specifically including the following steps: S1. Level the land and divide it into residential areas: Before sowing, apply 30 kg / mu of 18-18-18 compound fertilizer, which is equivalent to 81 kg / ha of pure nitrogen, pure phosphorus, and pure potassium. Topdressing is carried out at the jointing stage, with a pure nitrogen application rate of 100 kg / ha. Pure phosphorus and pure potassium are calculated as P2O5 and K2O, respectively. S3. Set the drip irrigation method and lay drip irrigation tape with built-in drippers based on the drip irrigation method; S4. Ridging: Set the wheat sowing row spacing. The row spacing is set to a one-pipe six-row mode, that is, one drip irrigation belt is responsible for irrigating six rows of wheat, and wheat is sown based on this row spacing. S5. Set the dripper flow rate and wheat irrigation amount for drip irrigation tape, and manage water volume accordingly.

[0007] Preferably, the drip irrigation method described in step S3 is shallow buried drip irrigation.

[0008] Preferably, the depth of laying the drip irrigation tape in step S3 is 5cm ± 0.1cm underground.

[0009] Preferably, the spacing of the drip irrigation tape laid in step S3 is 90cm ± 1cm.

[0010] Preferably, the spacing between the droppers in step S3 is 30cm ± 0.5cm.

[0011] Preferably, the wheat sowing row spacing in step S4 is 15cm ± 0.5cm.

[0012] Preferably, the dripper flow rate in step S5 is 3L / h.

[0013] Preferably, the irrigation amounts for wheat in step S5 are as follows for each growth stage: 30mm each time during the seedling stage, for a total of 2 irrigations; 40mm each time during the jointing stage, for a total of 2 irrigations; 40mm each time during the heading and flowering stage, for a total of 2 irrigations; and 3 times during the grain-filling stage, with irrigation amounts of 40mm, 30mm and 20mm respectively, decreasing gradually with each irrigation.

[0014] The present invention has the following advantages: 1. This invention optimizes the layout of drip irrigation tape, changing the traditional one-pipe four-row surface drip irrigation mode for spring wheat in the Hexi Corridor to one-pipe six-row shallow buried drip irrigation. This can effectively reduce the workload of pipeline laying and recycling, reduce material input and labor costs, and effectively alleviate farmland plastic pollution caused by the incomplete recycling of a large amount of plastic pipes.

[0015] 2. This invention abandons the traditional water-saving irrigation approach that emphasizes low flow rates (<2L / h) and innovatively introduces high flow rates (3L / h). By increasing the intensity of point source water supply, exceeding the instantaneous steady-state infiltration rate of the local soil below the dripper, a transient saturated high-pressure zone is artificially created on the surface, forcing gravity water to undergo significant lateral diffusion before infiltration, thereby creating a wide and shallow moist body in the upper soil layer and achieving wide coverage.

[0016] 3. When wheat encounters hot and dry winds and high temperatures during the grain-filling stage, this invention utilizes a dripper flow rate of 3L / h to significantly reduce the soil temperature of the wheat root system (an average reduction of 1-3℃), avoiding the excessively high soil temperature in the tillage layer caused by traditional irrigation methods, creating a cool environment for the roots, delaying aging, and increasing yield. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This invention provides a schematic diagram illustrating the layout and differences of shallow buried drip irrigation methods for spring wheat. Figure 2 A bar chart showing the yield per mu of spring wheat under different treatments provided by this invention; Figure 3 Bar graphs showing the content of branched and amylose in spring wheat grains under different treatments provided by the present invention; Figure 4 The soil temperature change curve of the 0-25cm root activity layer of spring wheat in group DT at May 19th, provided by this invention; Figure 5 The soil temperature change curve of the 0-25cm root activity layer of spring wheat in the FT group provided by this invention; Figure 6 The soil temperature change curve of the 0-25cm root activity layer of ST group spring wheat on May 19th is provided by the present invention. Figure 7 This invention provides a soil temperature variation curve of the 0-25cm root activity layer of spring wheat in the DT group during the jointing stage; Figure 8 The soil temperature variation curve of the 0-25cm root activity layer of spring wheat in the FT group during the jointing stage provided by the present invention; Figure 9 The soil temperature variation curve of the 0-25cm root activity layer of ST group spring wheat during the jointing stage is provided by the present invention. Figure 10 This invention provides a soil temperature variation curve of the 0-25cm root activity layer of spring wheat in the DT group during the grain-filling stage; Figure 11 The soil temperature variation curve of the 0-25cm root activity layer of spring wheat in the FT group during the grain-filling stage provided by the present invention; Figure 12 The soil temperature variation curve of the 0-25cm root activity layer of ST group spring wheat during the grain-filling stage provided by the present invention; Figure 13 A cross-sectional view of the spatial distribution of water at a depth of 20cm-80cm during a typical irrigation cycle in sandy loam soil in the embodiments and Comparative Example 1 provided by the present invention. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] According to a first aspect of the present invention, a method for wheat cultivation based on high-flow-rate, wide-spacing drip irrigation tape is provided, specifically including the following steps: S1. Level the land and divide it into residential areas: Before sowing, apply 30 kg / mu of 18-18-18 compound fertilizer, which is equivalent to 81 kg / ha of pure nitrogen, pure phosphorus, and pure potassium. Topdressing is carried out at the jointing stage, with a pure nitrogen application rate of 100 kg / ha. Pure phosphorus and pure potassium are calculated as P2O5 and K2O, respectively. S3. Set the drip irrigation method and lay drip irrigation tape with built-in drippers based on the drip irrigation method; S4. Ridging: Set the wheat sowing row spacing. The row spacing is set to a one-pipe six-row mode, that is, one drip irrigation belt is responsible for irrigating six rows of wheat, and wheat is sown based on this row spacing. S5. Set the dripper flow rate and wheat irrigation amount for drip irrigation tape, and manage water volume accordingly.

[0022] In step S3, the drip irrigation method is shallow buried drip irrigation.

[0023] In step S3, the depth of laying the drip irrigation tape is 5cm ± 0.1cm underground.

[0024] In step S3, the spacing of the drip irrigation tape is 90cm ± 1cm.

[0025] In step S3, the spacing between the droppers is 30cm ± 0.5cm.

[0026] In step S4, the row spacing for wheat sowing is 15cm ± 0.5cm.

[0027] In step S5, the dripper flow rate is 3L / h.

[0028] In step S5, the amount of irrigation water for wheat at each growth stage is as follows: 30 mm each time during the seedling stage, for a total of 2 irrigations; 40 mm each time during the jointing stage, for a total of 2 irrigations; 40 mm each time during the heading and flowering stage, for a total of 2 irrigations; and 3 times during the grain-filling stage, with irrigation amounts of 40 mm, 30 mm and 20 mm respectively, decreasing gradually with each irrigation.

[0029] To better illustrate the inventiveness of this invention, the following embodiments and comparative examples are provided.

[0030] Example The experiment of this invention was conducted in 2024 at the Shiyanghe Experimental Station of China Agricultural University in Wuwei, Gansu Province (37°51'N, 102°52'E, altitude 1581m). The experimental area has a typical temperate continental arid climate with an average annual sunshine duration of over 3000 hours and solar radiation reaching 6000 MJ / m². 2 The frost-free period is 150 days, the average annual temperature is 7.2℃, the average annual accumulated temperature is 2985℃, the average annual precipitation is 222mm, the average annual evaporation is 2021mm, and the groundwater level is below 25m. The soil type in the experimental area is sandy loam, with a field water holding capacity (moisture content) of 20.11%. Yongliang No. 4 spring wheat, widely planted locally and with good adaptability, was selected as the experimental material. The specific steps included: S1. Level the land and divide it into residential areas: Before sowing, apply 30 kg / mu of 18-18-18 compound fertilizer, which is equivalent to 81 kg / ha of pure nitrogen, pure phosphorus, and pure potassium. Topdressing should be applied at the jointing stage, with 100 kg / ha of pure nitrogen. Pure phosphorus and pure potassium are calculated as P2O5 and K2O, respectively. S3. Set the drip irrigation method to shallow buried drip irrigation, lay drip irrigation tape based on the drip irrigation method, with a depth of 5cm underground and a spacing of 90cm, and set the dripper spacing to 30cm; S4. Ridging: Set the wheat sowing row spacing to 15cm, i.e., one pipe for six rows. One drip irrigation belt is responsible for irrigating six rows of wheat, and sowing wheat based on this row spacing. S5. Set the dripper flow rate and wheat irrigation volume for the drip irrigation tape, and manage water volume accordingly: The drip irrigation tape was set with a dripper flow rate of 3L / h. The irrigation amounts for wheat at each growth stage were as follows: seedling stage, 30mm each time, for a total of 2 irrigations; jointing stage, 40mm each time, for a total of 2 irrigations; heading and flowering stage, 40mm each time, for a total of 2 irrigations; grain filling stage, 3 irrigations in total, with irrigation amounts of 40mm, 30mm and 20mm respectively, decreasing gradually with each irrigation.

[0031] For ease of distinction, the example group is named ST1 group.

[0032] Comparative Example 1 This comparative example is based on the embodiment, the difference being that the drip irrigation tape laying mode is one pipe for four rows, that is, one drip irrigation tape is responsible for irrigating four rows of wheat. Specifically, the drip irrigation tape spacing is 60cm, the dripper flow rate is 2L / h, and the other specific parameters are the same as those in the embodiment. It is named ST0 group.

[0033] Comparative Example 2 S1. Level the land and divide it into residential areas: Before sowing, apply 30 kg / mu of 18-18-18 compound fertilizer, which is equivalent to 81 kg / ha of pure nitrogen, pure phosphorus, and pure potassium. Topdressing is carried out at the jointing stage, with a pure nitrogen application rate of 100 kg / ha. Pure phosphorus and pure potassium are calculated as P2O5 and K2O, respectively. S3. After land preparation and fertilization, evenly lay drip irrigation tape with built-in drippers along the planting rows, ensuring that the dripper spacing is consistent, the pipeline is unobstructed and undamaged, the depth is 5cm underground, the spacing is 60cm, and the dripper spacing is 30cm. S4. Immediately cover with plastic film, press the edges of the film firmly with soil, so that the plastic film is close to the ground, without wrinkles or air leaks, to prevent the drip irrigation tape from shifting. S5. Ridging: Set the wheat sowing row spacing to 15cm, i.e., one pipe for four rows. One drip irrigation tape is responsible for irrigating four rows of wheat, and sowing wheat based on this row spacing. S6. Set the dripper flow rate and wheat irrigation volume for the drip irrigation tape, and manage water volume accordingly: The drip irrigation tape was set with a dripper flow rate of 2L / h. The irrigation amounts for wheat at each growth stage were as follows: seedling stage, 30mm each time, for a total of 2 irrigations; jointing stage, 40mm each time, for a total of 2 irrigations; heading and flowering stage, 40mm each time, for a total of 2 irrigations; grain filling stage, 3 irrigations in total, with irrigation amounts of 40mm, 30mm and 20mm respectively, decreasing successively. S7. After harvesting, promptly collect and centrally process waste plastic film and drip irrigation tape to reduce farmland residue.

[0034] The irrigation method used in this comparative example is drip irrigation with mulch film. The drip irrigation tape is laid in a one-pipe-four-row pattern, meaning that one drip irrigation tape is responsible for irrigating four rows of wheat. Specifically, the drip irrigation tape spacing is 60cm, and the dripper flow rate is 2L / h. This is named the FTO group.

[0035] Comparative Example 3 This comparative example is based on Comparative Example 2, the difference being that the irrigation method is drip irrigation with mulch, the drip irrigation tape is laid in a one-pipe-six-row pattern, that is, one drip irrigation tape is responsible for irrigating six rows of wheat, the specific drip irrigation tape spacing is 90cm, the dripper flow rate is 3L / h, and the other specific parameters are the same as those in the example, and it is named FT1 group.

[0036] Comparative Example 4 This comparative example is based on the embodiment, the difference being that the irrigation method is surface drip irrigation, the drip irrigation tape laying pattern is one pipe for four rows, that is, one drip irrigation tape is responsible for irrigating four rows of wheat, specifically the drip irrigation tape spacing is 60cm, the dripper flow rate is 2L / h, and the other specific parameters are the same as the embodiment, named DTO group; The specific operating steps for surface drip irrigation are as follows: S1. After land preparation and fertilization, lay drip irrigation branch pipes and capillary pipes along the crop planting rows, adjust the dripper spacing and laying density to ensure tight pipe connection and smooth water delivery. S2. Sow or transplant according to the designed plant spacing. After transplanting, drip irrigate in time to help the seedlings recover and ensure that the roots are in close contact with the soil. S3. During the growing season, water should be supplied in a timely and appropriate manner through the drip irrigation system according to soil moisture, weather conditions and crop water requirements. Water-soluble fertilizers can be used in conjunction to achieve precise water and fertilizer integration. S4. When irrigation is finished or during agricultural operations, take care to protect the drip irrigation tape to prevent it from being trampled or crushed, which could cause damage and blockage. After harvest, collect the drip irrigation equipment and store or dispose of it properly.

[0037] Comparative Example 5 This comparative example is based on the embodiment, the difference being that the irrigation method is surface drip irrigation, the drip irrigation tape laying pattern is one pipe for six rows, that is, one drip irrigation tape is responsible for irrigating six rows of wheat, specifically the drip irrigation tape spacing is 90cm, the dripper flow rate is 3L / h, and the other specific parameters are the same as the embodiment, named DT1 group.

[0038] The planting treatment methods of the embodiments and comparative examples of the present invention are shown in Table 1.

[0039] Table 1 Planting treatment methods for each group

[0040] Among them, the layout methods and differences of shallow buried drip irrigation for spring wheat are as follows: Figure 1 As shown, both the one-pipe-six-row and one-pipe-four-row drip irrigation tape layouts use a 15cm wheat sowing row spacing to ensure effective coverage of all wheat while reducing the amount of drip tape used. The dripper spacing is 30cm and the shallow burial depth is 5cm to ensure the formation of a continuous and uniform moist body in the soil. The difference between the two lies in the number of wheat rows irrigated by one drip tape and the dripper flow rate. Compared to the one-pipe-four-row model, the one-pipe-six-row model can save on pipeline costs; the dripper flow rate is increased from 2L / h to 3L / h, which can actively construct a wide and shallow moist body in the soil to match the wide row spacing layout, while reducing soil temperature by increasing the soil moisture content in the root zone and delaying root senescence.

[0041] Test Example 1 To better illustrate the inventiveness of the irrigation method described in the embodiments of the present invention, the present invention verified the yield of spring wheat in the embodiments and comparative groups.

[0042] The spring wheat yield per mu under different treatments provided by this invention is as follows: Figure 2 As shown, the yields of shallow-buried drip irrigation, mulched drip irrigation, and surface drip irrigation with one pipe and six rows, and a dripper flow rate of 3L / h (i.e., T1 mode) are 4.7%, 3.3%, and 2.7% higher than those with one pipe and four rows, and a dripper flow rate of 2L / h (i.e., T0 mode), respectively. Compared to the commonly used traditional irrigation mode in the area, i.e., surface drip irrigation with one pipe and four rows and a dripper flow rate of 2L / h (DT0), the shallow-buried drip irrigation with one pipe and six rows and a dripper flow rate of 3L / h (ST1 mode) of this invention can increase the yield by an average of 81.1 kg per mu, an increase of 15.7%, demonstrating significant economic benefits.

[0043] Test Example 2 S1. Preparation of standard solutions: a. Preparation of amylopectin standard solution: Weigh 100 mg of amylose standard into a small beaker using an analytical balance, add 1 mL of anhydrous ethanol and 9 mL of 1 mol / L NaOH solution, heat in a boiling water bath for 10 min to dissolve, cool, and make up to 100 mL for later use. b. Preparation of amylopectin standard solution: Weigh 100 mg of amylopectin standard into a small beaker using an analytical balance, add 1 mL of anhydrous ethanol and 9 mL of 1 mol / L NaOH solution, heat in a boiling water bath for 10 min to dissolve, cool, and make up to 100 mL for later use. S2. Draw the standard curve: Measure 0, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, and 1.5 mL of amylose standard solution and 0, 0.5, 1.0, 2.0, 3.0, 4.0, and 5.0 mL of amylopectin standard solution into 25 mL centrifuge tubes, respectively. Adjust the acidity to pH 3.8 with 0.1 mol / L glacial acetic acid. Add 0.5 mL of iodine reagent and make up to volume. Incubate for 15 min. Use 0 mL of starch standard solution as a blank and measure the absorbance A. Plot a standard curve with absorbance on the x-axis and concentration on the y-axis, and determine the standard linear equation. S3, Sample Measurement The sample was pulverized, sieved, and dried. 0.1 g was weighed into a dry 25 mL volumetric flask, and 0.5 mL of anhydrous ethanol and 2.5 mL of 1 mol / L NaOH solution were added. The mixture was heated in a boiling water bath for 10 min, cooled, and brought to a final volume. The sample extract was defatted three times with petroleum ether. 2 mL of the defatted sample was taken, the pH adjusted to 3.8, and the absorbance (A) was measured. The corresponding content was calculated using the standard linear equation. Specifically, the absorbance change of amylose was the difference between the absorbance of the sample solution at 570 nm and 480 nm; the absorbance change of amylopectin was the difference between the absorbance of the sample solution at 525 nm and 760 nm. The absorbance changes of amylose and amylopectin were substituted into the standard curve to calculate the concentration of the sample solution. The amylose / amylose content is expressed by the formula: Calculation. Where C is the starch content of the sample in the colorimetric tube obtained from the standard curve, in mg; Vt is the total volume of sample extraction, in mL; V is the volume of liquid taken for determination, in mL; and D is the dilution factor.

[0044] The content of amylopectin and amylose in spring wheat grains under different treatments, such as Figure 3 As shown, spring wheat grown using the ST1 method achieved an average amylopectin content of 436.6 mg / g and an average amylose content of 280.5 mg / g. Compared to the commonly used traditional irrigation method in the area (DT0: surface drip irrigation, four rows per pipe, 2 L / h dripper flow rate), the ST1 method of this invention increased the amylopectin and amylose content of spring wheat by 21.7% and 19.4%, respectively. Even compared to the control group (ST0: four rows per pipe, 2 L / h), which also uses shallow-buried drip irrigation but with traditional low flow rate and narrow row spacing, the ST1 method increased the amylopectin and amylose content by 9.3% and 5.5%, respectively. This indicates that the wheat planting method of this invention can effectively improve the quality of spring wheat.

[0045] Test Example 3 Select a representative measurement location in each community, specifically between the two locations. Avoid measurements in direct sunlight, near buildings, roads, or other heat sources or areas with abnormal moisture levels. Generally, choose an open, flat area with evenly distributed vegetation. Place the ground thermometer horizontally on the ground, half buried in the soil and half exposed, ensuring the sensing part is in close contact with the soil. The surrounding soil surface should be smooth, avoiding unevenness or gaps. If using a straight-tube ground thermometer, first drill a hole vertically downwards in the ground, matching the thermometer's diameter. Slowly lower the thermometer into the hole to the desired depth, then fill the hole with loose soil to ensure close contact between the thermometer and the soil. Take readings every other day at the same time of day.

[0046] The soil temperature change curves of the DT, FT, and ST groups of this invention at 0-25cm depth during the wheat jointing and grain-filling stages on May 29th are shown below. Figures 4-12 As shown, soil temperature monitoring data confirms that the high-flow-rate, wide-spacing drip irrigation tape mode (T1) of this invention has a cooling and root-protecting effect on the 0-25cm root zone throughout the entire growth period. Especially during the jointing and grain-filling stages, compared to the traditional STO mode, the ST1 mode reduces the average root zone soil temperature by 0.8℃-1.6℃, with a shallow layer temperature reduction of over 2.4℃ during the daytime high-temperature period. This significant improvement in the microenvironment effectively avoids the damage to root vitality caused by high-temperature heat damage and is the core mechanism for achieving extended grain-filling period, increased grain weight, and improved quality in wheat.

[0047] Furthermore, the high-flow-rate drip irrigation of 3L / h effectively reduced the soil temperature in the 0-25cm tillage layer during the wheat grain-filling stage, by an average of 1-3℃, creating a suitable cool environment for the roots. This improved microclimate effectively alleviated the high-temperature stress caused by hot and dry winds, delayed the premature aging of roots and leaves, and thus extended the grain-filling period, allowing more photosynthetic products to be fully transferred to the grains and converted into starch, ultimately achieving a double harvest of wheat yield and quality. The significant improvement in the quality of spring wheat in Test Example 2 further confirms the effectiveness of the high-flow-rate cooling theory of this invention.

[0048] Test Example 4 This invention involves taking soil samples at depths of 20cm, 40cm, 60cm, and 80cm from the bottom of the drip irrigation system and at the midpoint and quarter-point between the two drip irrigation systems. The soil moisture content is measured using the drying method to determine the irrigation time and amount for each planting group and to study the spatial distribution of soil moisture.

[0049] Figure 13 This is a cross-sectional view of the spatial distribution of moisture at a depth of 20cm-80cm in sandy loam soil during a typical irrigation cycle (May 3rd) for the embodiments and comparative groups provided by the present invention. As can be clearly seen from the figure, the two moisture content curves of the soil in the 20-40cm effective root layer of the embodiment group (ST1) of the present invention almost overlap, solving the problem of poor lateral moisture diffusion in the soil of the comparative group (ST0); at the same time, no surge in moisture content was observed at a depth of 80cm, overcoming the drawbacks of gravity-induced water leakage caused by traditional low-flow drip irrigation.

[0050] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape, characterized in that, Specifically, the following steps are included: S1. Level the land and divide it into residential areas: Before sowing, apply 30 kg / mu of 18-18-18 compound fertilizer, which is equivalent to 81 kg / ha of pure nitrogen, pure phosphorus, and pure potassium. Topdressing is carried out at the jointing stage, with a pure nitrogen application rate of 100 kg / ha. Pure phosphorus and pure potassium are calculated as P2O5 and K2O, respectively. S3. Set the drip irrigation method and lay drip irrigation tape with built-in drippers based on the drip irrigation method; S4. Ridging: Set the wheat sowing row spacing. The row spacing is set to a one-pipe six-row mode, that is, one drip irrigation belt is responsible for irrigating six rows of wheat, and wheat is sown based on this row spacing. S5. Set the dripper flow rate and wheat irrigation amount for drip irrigation tape, and manage water volume accordingly.

2. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The drip irrigation method described in step S3 is shallow buried drip irrigation.

3. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The depth of laying the drip irrigation tape in step S3 is 5cm ± 0.1cm underground.

4. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The spacing of the drip irrigation tape laid in step S3 is 90cm ± 1cm.

5. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The spacing between the droppers in step S3 is 30cm ± 0.5cm.

6. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The wheat sowing row spacing mentioned in step S4 is 15cm ± 0.5cm.

7. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The dripper flow rate mentioned in step S5 is 3L / h.

8. The wheat planting method based on high-flow-rate, wide-spacing drip irrigation tape as described in claim 1, characterized in that, The irrigation amounts for wheat at each growth stage in step S5 are as follows: 30mm each time during the seedling stage, for a total of 2 irrigations; 40mm each time during the jointing stage, for a total of 2 irrigations; 40mm each time during the heading and flowering stage, for a total of 2 irrigations; and 3 times during the grain-filling stage, with irrigation amounts of 40mm, 30mm and 20mm respectively, decreasing gradually with each irrigation.

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