Low-cost and high-benefit cultivation method for multiple cropping and crop rotation of peas and broom corn millet

Abstract

The invention discloses a low-cost and high-benefit cultivation method for multiple cropping and rotation of peas and broom corn millet, which relates to the technical field of agricultural cultivation and comprises the following steps: selecting a crop variety to be cultivated, sowing peas and performing field management, harvesting peas and sowing broom corn millet, harvesting broom corn millet and preparing soil and sunning upturned soil for sowing peas again. The problem of low utilization rate of traditional crop cultivation land resources can be well solved through multiple cropping and crop rotation planting of peas and broom corn millet, leguminous and gramineous food crops can be harvested in a natural year, the crop yield and the economic benefit of unit land area are both improved, meanwhile, nitrogen fixation can be achieved through planting of peas, and the yield of crops can be increased. The method is beneficial to reducing nitrogen fertilizer input for later-period broom corn millet cultivation and lowering the cultivation cost, meanwhile, cultivation soil is adjusted through the composite base fertilizer, the soil environment can be effectively improved, meanwhile, a certain fertilizer slow release effect is achieved, sufficient nutrients are provided for cultivation and growth of pea and broom corn millet crops, and the application amount of chemical fertilizers is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural cultivation, and particularly relates to a low-cost and high-benefit cultivation method for pea-millet multiple cropping and rotation. Background Art

[0002] Agricultural cultivation refers to the process of taking a series of technical measures in agricultural production according to the growth and development laws of crops and their requirements for environmental conditions to obtain high-yield, high-quality, and efficient crop products. Agricultural cultivation covers the entire production cycle from seed treatment, sowing, field management to harvesting, involving various aspects of technology and management practices. Modern agricultural cultivation pays more and more attention to sustainability. By adopting methods such as organic agriculture, precision agriculture, and ecological agriculture, the use of chemicals is reduced, the ecological environment is protected, and the economic and social benefits of agricultural production are improved.

[0003] Multiple cropping and rotation cultivation is a planting method in which different types of crops are planted in sequence on the same piece of land in a planned manner to achieve multiple harvests in a year. Its basic principle is to balance the utilization of soil nutrients, improve soil structure, increase biodiversity, reduce pests and diseases, improve crop yield and quality, and combine land use and land conservation by rotating different crops. Through multiple cropping and rotation, time and space are fully utilized to achieve multiple harvests in a year, which can improve land use efficiency and crop yield.

[0004] Pea is a common edible leguminous plant belonging to the genus Pisum in the legume family. It is not only rich in nutrients but also plays an important role in crop production. It is suitable for planting in well-drained, fertile sandy loam or loam soil. Millet, also known as broomcorn millet or panicled millet, is an annual herbaceous plant of the genus Panicum in the grass family. It was once known as the "king of the five grains" and has the characteristics of drought tolerance and poor soil tolerance. It is suitable for dry farming with rainfed conditions.

[0005] The yield of single-season crops in the traditional cultivation modes of pea and millet is not high. And long-term single cropping of crops in the same family will lead to excessive consumption of specific nutrient elements in the soil, and it is necessary to rely on chemical fertilizers for supplementation, which cannot maintain soil fertility and ecological balance. To a certain extent, it increases the cost of crop cultivation. In addition, there are also waste of light, heat, and land resources, and the production capacity per unit area is not fully exploited, resulting in low land use efficiency, single and volatile income, and weak risk resistance ability, unable to bring good economic benefits. Therefore, the present invention proposes a low-cost and high-benefit cultivation method for pea-millet multiple cropping and rotation to solve the problems existing in the prior art. Summary of the Invention

[0006] In view of the above problems, the object of the present invention is to provide a low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation, which solves the problems existing in the traditional agricultural cultivation modes of peas and millet, such as the low yield of single-season crops, the inability to maintain soil fertility and ecological balance, as well as the waste of light, heat and land resources and the low land use efficiency.

[0007] To achieve the object of the present invention, the present invention is realized through the following technical solutions: A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation, comprising the following steps:

[0008] Step 1: Select early-maturing, high-yielding, and pest-resistant pea varieties as the pea seeds to be rotationally cultivated, and reserve them after pretreatment. Select drought-tolerant and barren-tolerant millet varieties as the millet seeds to be rotationally cultivated and reserve them after pretreatment.

[0009] Step 2: Sow the selected pea seeds in the field in early spring by strip sowing or hole sowing, and regularly conduct field management including intertillage and weeding, irrigation and watering, and pest control after the pea seeds are sown.

[0010] Step 3: After the peas are mature, harvest them by mechanical harvesting. After harvesting, plow and apply the pre-prepared compound base fertilizer. After plowing, sow the selected millet seeds in the field by strip sowing or broadcasting, and regularly conduct field management including thinning and final singling, topdressing, and pest control after sowing.

[0011] Step 4: After the millet is mature, harvest it by mechanical harvesting.

[0012] Step 5: After harvesting, deeply plow and sun the field soil. After deep plowing and land preparation are completed, apply the pre-prepared compound base fertilizer, and prepare the land and sun it for sowing peas again the next year.

[0013] Further improvement lies in: In the above Step 1, the pretreatment steps for pea seeds and millet seeds are as follows: First, use water selection to remove impurities and inferior seeds in the seeds, then disinfect the seeds with a 1% potassium permanganate solution, and then dry the seeds.

[0014] Further improvement lies in: In the above Step 2, the sowing depth of the pea seeds is 2-3 cm, the sowing row spacing is 30-35 cm, and the sowing plant spacing is 8-12 cm.

[0015] Further improvement lies in: In the above Step 2, the specific steps for field management after the pea seeds are sown are as follows: Conduct intertillage and soil loosening and combine with weeding operations during the seedling stage of the pea seeds, water regularly according to the soil moisture in the field, and control aphids and powdery mildew of the peas.

[0016] A further improvement lies in that: in the third step, the sowing depth of the broomcorn millet seeds is 3 - 4 cm, the sowing row spacing is 25 - 30 cm, and the sowing plant spacing is 10 - 15 cm.

[0017] A further improvement lies in that: in the third step, the specific steps for field management after sowing the broomcorn millet seeds are as follows: thinning is carried out after the broomcorn millet seeds emerge, nitrogen fertilizer is topdressed according to the nitrogen content in the field soil during the jointing stage of the broomcorn millet, 10 - 15 kg per mu, and the broomcorn millet head smut and aphids of the broomcorn millet are controlled.

[0018] A further improvement lies in that: in the third step, the specific steps for preparing the compound base fertilizer are as follows: first, weigh organic fertilizer, inorganic fertilizer and synergist according to the weight ratio of 2000:20:0.01 respectively, then dry the organic fertilizer, crush the inorganic fertilizer, then mix and stir the dried organic fertilizer and the crushed inorganic fertilizer and add the synergist, send it to a granulator after mixing evenly, and carry out drying treatment after granulation to obtain the compound base fertilizer.

[0019] A further improvement lies in that: the organic fertilizer is prepared by mixing dry chicken manure, dry duck manure, dry rabbit manure, sorghum cake powder and peanut cake powder according to the mass ratio of 2:2:2:1:1, the inorganic fertilizer is prepared by mixing urea, diammonium phosphate, potassium sulfate, ferrous sulfate, manganese sulfate, copper sulfate and zinc sulfate according to the mass ratio of 10:10:10:1:1:1:1, and the synergist is sodium nitrophenolate

[0020] A further improvement lies in that: in the fifth step, the specific steps for deep plowing and sunning the field soil are as follows: first, remove the stubble and weeds in the field, then determine the plowing depth, use a deep plow to carry out deep plowing according to the predetermined depth to expose the underlying soil on the ground surface, after plowing, expose the soil to the sun, and backfill and level the soil after sunning.

[0021] A further improvement lies in that: in the fifth step, the specific steps for deep plowing and land preparation of the field soil are as follows: first, clean up the weeds and crop residues in the field, then detect the soil fertility and texture, then carry out deep plowing operations with a tractor equipped with a reversible plow, and finally use a harrowing machine to break up the soil clods to level the land.

[0022] The beneficial effects of the present invention are as follows: Through the multiple cropping and rotation of peas and broomcorn millet, the present invention can well solve the problem of low utilization rate of land resources in traditional crop cultivation, realizing the harvest of two food crops of legumes and gramineous crops within a natural year, and doubling the crop yield and economic benefits per unit land area. At the same time, through the cultivation of peas, nitrogen can be fixed, which is beneficial to reducing the nitrogen fertilizer input in the later cultivation of broomcorn millet and lowering the cultivation cost. At the same time, by adjusting the cultivation soil with compound base fertilizer, the soil environment can be effectively improved, and a certain fertilizer slow-release effect can be achieved, providing sufficient nutrients for the cultivation and growth of pea and broomcorn millet crops, effectively reducing the application amount of chemical fertilizers, realizing the rotation of leguminous and gramineous crops, achieving the purpose of combining land use and land conservation. And in the process of rotation planting, by reasonably arranging the planting time and crop rotation sequence, selecting suitable varieties, and strengthening field management, the efficient utilization of land can be realized, the crop yield and economic benefits can be improved, and the soil fertility and ecological balance can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic flow chart of a low-cost and high-benefit cultivation method for multiple cropping and rotation of peas and broomcorn millet of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] Agricultural cultivation is a technical system for realizing high-efficient production of agricultural crops by scientifically managing elements such as soil, crops, water, and fertilizers. Its core lies in variety selection, environmental regulation, and resource optimization, ultimately achieving the goals of high yield, high quality, and sustainability. In the field of agricultural cultivation, through scientific and reasonable multiple cropping and rotation cultivation, high yield, high efficiency, and ecological friendliness of agriculture can be realized, promoting the sustainable development of agriculture. This mode can significantly increase the yield per unit area, improve the soil structure, and reduce pests and diseases, and is applicable to areas with warm climate and relatively long frost-free periods;

[0027] In traditional agricultural cultivation techniques, the cultivation methods for peas and broomcorn millet have problems such as low yields of single-season crops due to maturing once a year, inability to maintain soil fertility and ecological balance, insufficient excavation of production capacity per unit area, and inability to bring good economic benefits.

[0028] Example 1

[0029] See Figure 1 , this example provides a low-cost and high-benefit cultivation method for pea-broomcorn millet multiple cropping and rotation, including the following steps:

[0030] Step 1: Select the crop varieties to be cultivated

[0031] Select early-maturing, high-yielding, and pest-resistant pea varieties as the pea seeds to be cultivated in rotation. The pea variety selected in this example is Zhongwan No. 6. Select drought-tolerant and barren-tolerant broomcorn millet varieties as the broomcorn millet seeds to be cultivated in rotation and set them aside. The broomcorn millet variety selected in this example is Longmi No. 1. The selected pea seeds and broomcorn millet seeds are both set aside after pretreatment. The specific steps are as follows: First, use the water selection method to remove impurities and inferior seeds in the seeds. Then, disinfect the seeds with a 1% potassium permanganate solution to reduce the occurrence of pests and diseases. Then, dry the seeds to improve the seed vitality and promote rapid germination;

[0032] Step 2: Pea sowing and field management

[0033] Sow the pea seeds selected in Step 1 in the field in the early spring season (early March) by drill seeding. The seeding rate per mu is 8 kg, the seeding depth is 2 cm, the seeding row spacing is 30 cm, and the seeding plant spacing is 8 cm. After sowing the pea seeds, regularly carry out field management including intertillage and weeding, irrigation and watering, and pest and disease control. The specific steps are as follows: Carry out intertillage and soil loosening and combine with weeding operations during the seedling stage of the pea seeds. Water regularly according to the soil moisture in the field to keep the soil moist. Spray 2000-fold liquid of 10% imidacloprid wettable powder for aphids on peas, and spray 1500-fold liquid of 25% azoxystrobin suspension for powdery mildew on peas to achieve pest and disease control;

[0034] Step 3: Pea harvest and broomcorn millet sowing

[0035] After the peas are mature (they mature 70 - 100 days after sowing, the pods change color and the seeds are plump), they are harvested by mechanical means. After harvesting, deep plowing is carried out and the pre-prepared compound base fertilizer is applied. The deep plowing depth is 20 cm. After deep plowing, the proso millet seeds selected in step one are sown in the field by drilling in summer. The seeding rate per mu is 1.5 kg, the seeding depth is 3 cm, the seeding row spacing is 25 cm, and the seeding plant spacing is 10 cm to make full use of the growing season. After the proso millet seeds are sown, field management including thinning and final thinning, topdressing, and pest and disease control is carried out regularly to keep the soil moist to promote crop growth. The specific steps of field management are as follows: After the proso millet seeds emerge, thinning treatment is carried out in a timely manner. During the jointing stage of proso millet, nitrogen fertilizer is topdressed according to the nitrogen content in the field soil, 10 kg per mu. For the head smut of proso millet, triadimefon fungicide is sprayed, and for the aphids of proso millet, 10% imidacloprid wettable powder 2000 times solution is used for spraying to achieve pest and disease control;

[0036] The specific steps for pre-preparing the compound base fertilizer are as follows: First, weigh the organic fertilizer, inorganic fertilizer, and synergist according to the weight ratio of 2000:20:0.01 respectively. Then, dry the organic fertilizer and crush the inorganic fertilizer. Then, mix and stir the dried organic fertilizer and the crushed inorganic fertilizer and add the synergist. After mixing evenly, send it to a granulator. After granulation and forming, drying treatment is carried out to obtain the compound base fertilizer. The organic fertilizer is prepared by mixing dry chicken manure, dry duck manure, dry rabbit manure, sorghum cake powder, and peanut cake powder according to the mass ratio of 2:2:2:1:1. The inorganic fertilizer is prepared by mixing urea, diammonium phosphate, potassium sulfate, ferrous sulfate, manganese sulfate, copper sulfate, and zinc sulfate according to the mass ratio of 10:10:10:1:1:1:1. The synergist is sodium nitrophenolate;

[0037] Step Four: Harvesting of Proso Millet

[0038] After the proso millet is mature (it matures 85 - 95 days after sowing, the ear turns yellow and the seeds harden), it is harvested by mechanical means;

[0039] Step Five: Multiple Cropping and Crop Rotation of Peas

[0040] After harvesting, deep plowing and sunning of the field soil are carried out to reduce soil-borne diseases. The compound base fertilizer is pre-prepared, and the pre-prepared compound base fertilizer is applied after deep plowing and land preparation are completed. After land preparation and sunning, peas are sown again the next year. The specific steps of deep plowing and sunning are as follows: First, remove the stubble, weeds, and other sundries in the field to ensure that the soil surface is clean for subsequent operations. Then, use agricultural machinery such as a deep plow or rotary tiller to determine the deep plowing depth of 20 cm according to the soil conditions and crop requirements. Then, start the agricultural machinery and carry out deep plowing according to the predetermined depth to ensure that the soil is completely turned over and the bottom soil is exposed on the surface. After deep plowing, let the soil be exposed to the sun for a period of time. After sunning, backfill and level the soil as needed to prepare for sowing peas the next year;

[0041] Select field soil that is fertile and well-drained for deep plowing and land preparation to a depth of 20 cm. The specific steps are as follows: First, clean up the weeds and crop residues in the field to avoid affecting the deep plowing effect. Then, conduct tests on soil fertility and texture to understand the soil conditions and provide a basis for fertilization and deep plowing depth. Next, use a tractor equipped with a reversible plow for deep plowing operations. During deep plowing, separate the topsoil and subsoil and push them aside to avoid confusion. Subsequently, backfill the topsoil into the ditch, then backfill the subsoil. Finally, use a harrowing machine to break up the soil clods to level the land. After deep plowing and land preparation, apply the pre-prepared compound base fertilizer to improve the soil fertility in the field. Adjust the fertilization amount according to the test results of soil fertility and texture in the field during fertilization;

[0042] The pea-proso millet multiple cropping and rotation technology can prevent the single consumption of soil nutrients and the accumulation of pests and diseases, improve the output efficiency of the land, and maintain the sustainable use of the soil. At the same time, it can improve the soil structure through rotation, reduce pests and diseases, and increase soil fertility.

[0043] Example Two

[0044] See Figure 1 , this example provides a low-cost and high-benefit cultivation method for pea-proso millet multiple cropping and rotation, including the following steps:

[0045] Step 1: Select the crop varieties to be cultivated

[0046] Select early-maturing, high-yielding, and pest-resistant pea varieties as the pea seeds for rotation cultivation. The pea variety selected in this example is Zhongwan No. 6. Select drought-tolerant and barren-tolerant proso millet varieties as the proso millet seeds for rotation cultivation and set them aside. The proso millet variety selected in this example is Longmi No. 1. The selected pea seeds and proso millet seeds are all set aside after pretreatment. The specific steps are as follows: First, use the water selection method to remove impurities and inferior seeds from the seeds. Then, disinfect the seeds with a 1% potassium permanganate solution to reduce the occurrence of pests and diseases. Next, dry the seeds to improve seed vigor and promote rapid germination;

[0047] Step 2: Pea sowing and field management

[0048] Sow the pea seeds selected in Step 1 in the field in the early spring season (early March) by hole sowing. The seeding rate per mu is 10 kg, the sowing depth is 3 cm, the sowing row spacing is 35 cm, and the sowing plant spacing is 12 cm. After sowing the pea seeds, regularly conduct field management including intertillage and weeding, irrigation and watering, and pest and disease control. The specific steps are as follows: Conduct intertillage and soil loosening and combine with weeding operations during the seedling stage of the pea seeds. Water regularly according to the soil moisture in the field to keep the soil moist. Spray 2000-fold liquid of 10% imidacloprid wettable powder for aphids on peas, and spray 1500-fold liquid of 25% azoxystrobin suspension for powdery mildew on peas to achieve pest and disease control;

[0049] Step 3: Pea Harvesting and Millet Sowing

[0050] After the peas are mature (they mature 90 - 100 days after sowing, the pods change color and the grains are plump), they are harvested by mechanical means. After harvesting, the field is plowed and the pre-prepared compound base fertilizer is applied. The plowing depth is 30 cm. After plowing, the millet seeds selected in Step 1 are sown in the field by drilling in summer. The seeding rate per mu is 2 kg, the seeding depth is 4 cm, the seeding row spacing is 30 cm, and the seeding plant spacing is 15 cm to make full use of the growing season. After the millet seeds are sown, field management including thinning and final thinning, topdressing, and pest and disease control is carried out regularly to keep the soil moist to promote crop growth. The specific steps of field management are as follows: Thinning is carried out in a timely manner after the millet seeds emerge. Nitrogen fertilizer is topdressed according to the nitrogen content of the field soil during the jointing stage of millet, 15 kg per mu. Triadimefon fungicide is sprayed against the head smut of millet, and 10% imidacloprid wettable powder 2000-fold solution is used for spraying against aphids on millet to achieve pest and disease control;

[0051] The specific steps for pre-preparing the compound base fertilizer are as follows: First, organic fertilizer, inorganic fertilizer, and synergist are weighed according to a weight ratio of 2000:20:0.01. Then the organic fertilizer is dried, and the inorganic fertilizer is pulverized. Then the dried organic fertilizer and the pulverized inorganic fertilizer are mixed and stirred and the synergist is added. After mixing evenly, it is sent to a granulator. After granulation and forming, drying treatment is carried out to obtain the compound base fertilizer. The organic fertilizer is prepared by mixing dry chicken manure, dry duck manure, dry rabbit manure, sorghum cake powder, and peanut cake powder according to a mass ratio of 2:2:2:1:1. The inorganic fertilizer is prepared by mixing urea, diammonium phosphate, potassium sulfate, ferrous sulfate, manganese sulfate, copper sulfate, and zinc sulfate according to a mass ratio of 10:10:10:1:1:1:1. The synergist is compound nitrophenolate sodium;

[0052] Step 4: Millet Harvesting

[0053] After the millet is mature (it matures 85 - 95 days after sowing, the ear turns yellow and the grains harden), it is harvested by mechanical means;

[0054] Step 5: Pea Multiple Cropping and Crop Rotation

[0055] After harvesting, deeply plow and sun the field soil to reduce soil-borne diseases. Prepare the compound base fertilizer in advance and apply the prepared compound base fertilizer after deep plowing and land preparation. After land preparation and sunning, wait until the next year to sow peas again. The specific steps of deep plowing and sunning are as follows: First, remove the stubble, weeds, and other debris in the field to ensure the cleanliness of the soil surface for subsequent operations. Then, use agricultural machinery such as a deep plow or rotary tiller to determine the plowing depth of 30 cm according to the soil conditions and crop requirements. Next, start the agricultural machinery and conduct deep plowing according to the predetermined depth to ensure that the soil is completely turned over and the underlying soil is exposed on the surface. After plowing, let the soil be exposed to the sun for a period of time. After sunning, backfill and level the soil as needed to prepare for sowing peas in the next year;

[0056] Select field soil that is fertile and well-drained for deep plowing and land preparation with a depth of 2.5 cm. The specific steps are as follows: First, clean up the weeds and crop residues in the field to avoid affecting the deep plowing effect. Then, conduct tests on soil fertility and texture to understand the soil conditions and provide a basis for fertilization and deep plowing depth. Next, use a tractor equipped with a reversible plow for deep plowing operations. When deep plowing, separate the topsoil and subsoil and push them separately to avoid confusion. Subsequently, backfill the topsoil into the ditch, then backfill the subsoil, and finally use a harrowing machine to break up the soil clods to level the land. After deep plowing and land preparation, apply the prepared compound base fertilizer to improve the soil fertility of the field. Adjust the fertilization amount according to the test results of soil fertility and texture in the field during fertilization;

[0057] The pea-millet multiple cropping and rotation technology is used to prevent the single consumption of soil nutrients and the accumulation of pests and diseases, improve the output efficiency of the land, and at the same time maintain the sustainable use of the soil. At the same time, it improves the soil structure, reduces pests and diseases, and increases soil fertility through rotation.

[0058] During the implementation of Example 1 and Example 2, a multiple cropping and rotation mode of spring-sown peas and summer-sown millet was achieved. Compare the yields of traditional "one crop per year" peas and millet with the yields of the multiple cropping and rotation planting mode in the embodiments of this application. The multiple cropping and rotation yield is higher than the "one crop per year" yield. The specific planting yields are shown in Table 1 below. The crops planted are all the pea variety Zhongwan No. 6 and the millet variety Longmi No. 1. The results are shown in Table 1 below:

[0059] Table 1 Statistical table of planting test data for different planting modes and different varieties

[0060]

[0061] Among them, the calculation of the incidence of pests and diseases is calculated by the percentage of the area occupied by the occurrence range of pests and diseases in the total planting area;

[0062] As can be seen from Table 1 above, compared with the traditional planting mode, although the yield of millet has decreased, the yield of peas has increased significantly. Generally speaking, using the planting mode of this application can obtain higher yields;

[0063] Ecological benefits of the multiple cropping and rotation planting mode in the embodiments of the present application: The nitrogen fixation of peas (about 5 kg of nitrogen fixation per mu) reduces the amount of chemical fertilizers used, and the return of broomcorn millet straw to the field improves the soil fertility.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-cost and high-benefit cultivation method for pea-millet multiple cropping and rotation, characterized in that, It includes the following steps: Step 1: Select pea varieties with early maturity, high yield and disease and pest resistance as the pea seeds to be cultivated by rotation, and reserve them after pretreatment. Select proso millet varieties that are drought-tolerant and barren-tolerant as the proso millet seeds to be cultivated by rotation and reserve them after pretreatment; Step 2: Sow the selected pea seeds in the field in early spring by drill seeding or hill-drop seeding. After sowing the pea seeds, conduct field management regularly, including intertillage and weed control, irrigation and watering, and disease and pest control; Step 3: After the peas are mature, harvest them by mechanical harvesting. After harvesting, plow and apply the pre-prepared compound base fertilizer. After plowing, sow the selected proso millet seeds in the field by drill seeding or broadcast seeding. After sowing, conduct field management regularly, including thinning and final singling, topdressing, and disease and pest control; Step 4: After the proso millet is mature, harvest it by mechanical harvesting; Step 5: After harvesting, deeply plow and sun the field soil. After deep plowing and land preparation are completed, apply the pre-prepared compound base fertilizer, and prepare the land and sun it for sowing peas again next year.

2. A low-cost and high-benefit cultivation method for pea-millet multiple cropping and rotation according to claim 1, characterized in that: In the said Step 1, the pretreatment steps for pea seeds and proso millet seeds are: first, remove impurities and inferior seeds in the seeds by water selection method, then disinfect the seeds with a 1% potassium permanganate solution, and then dry the seeds.

3. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 1, characterized in that: In the said Step 2, the sowing depth of the pea seeds is 2 - 3 cm, the sowing row spacing is 30 - 35 cm, and the sowing plant spacing is 8 - 12 cm.

4. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 1, characterized in that: In the said Step 2, the specific steps for field management after sowing the pea seeds are: conduct intertillage and soil loosening and combine with weed control operations during the seedling stage of the pea seeds, water regularly according to the soil moisture in the field, and control aphids and powdery mildew of the peas.

5. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 1, characterized in that: In the said Step 3, the sowing depth of the proso millet seeds is 3 - 4 cm, the sowing row spacing is 25 - 30 cm, and the sowing plant spacing is 10 - 15 cm.

6. A low-cost and high-benefit cultivation method for pea-millet multiple cropping and rotation, characterized in that: In the said Step 3, the specific steps for field management after sowing the proso millet seeds are: conduct thinning treatment after the proso millet seeds emerge, topdress nitrogen fertilizer according to the nitrogen content in the field soil during the jointing stage of the proso millet, 10 - 15 kg per mu, and control head smut and aphids of the proso millet.

7. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 1, characterized in that: In the said Step 3, the specific steps for preparing the compound base fertilizer are: first, weigh organic fertilizer, inorganic fertilizer and synergist according to the weight ratio of 2000:20:0.01 respectively, then dry the organic fertilizer, crush the inorganic fertilizer, then mix and stir the dried organic fertilizer and crushed inorganic fertilizer and add the synergist, send it to a granulator after mixing evenly, and conduct drying treatment after granulation to obtain the compound base fertilizer.

8. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 7, characterized in that: The organic fertilizer is prepared by mixing dry chicken manure, dry duck manure, dry rabbit manure, sorghum cake powder and peanut cake powder according to the mass ratio of 2:2:2:1:

1. The inorganic fertilizer is prepared by mixing urea, diammonium phosphate, potassium sulfate, ferrous sulfate, manganese sulfate, copper sulfate and zinc sulfate according to the mass ratio of 10:10:10:1:1:1:

1. The synergist is sodium nitrophenolate.

9. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 1, characterized in that: In the fifth step, the specific steps for deep plowing and sunning the field soil are as follows: First, remove the stubble and weeds in the field, then determine the plowing depth, use a deep plow to conduct deep plowing according to the predetermined depth to expose the underlying soil on the ground surface. After plowing, expose the soil to the sun, and after sunning, backfill and level the soil.

10. A low-cost and high-benefit cultivation method for pea-millet multiple cropping rotation according to claim 1, characterized in that: In the fifth step, the specific steps for deep plowing and land preparation of the field soil are as follows: First, clean up the weeds and crop stubble in the field, then conduct tests on the soil fertility and texture, then use a tractor equipped with a reversible plow to carry out deep plowing operations, and finally use a harrowing machine to break up the soil clods to level the land.

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