Grass prevention cultivation method for interplanting origanum vulgare and selfheal

Abstract

According to the method, origanum vulgare stops growing in winter and grows slowly in spring, selfheal grows on the ground surface in a rosette shape in winter and grows rapidly in spring, harvesting can be completed in late May, at the moment, origanum vulgare begins to enter a rapid growth period, and the yield of the origanum vulgare is increased. Due to the fact that the growth states of the origanum vulgare and the selfheal are inconsistent in different seasons, the maximum coverage of the land is achieved, the weed growth space is compressed, use of herbicides is avoided, and green prevention and control of weeds are achieved; according to the method, different growing periods of the origanum vulgare and the selfheal are utilized at the same time, the utilization rate of land is increased, natural resources such as light energy, air, moisture and heat can be fully utilized, the marginal effect and the mutual benefit effect between plants are exerted, the comprehensive benefit of double harvest is achieved, the income is increased, and the economic value is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oregano planting, and particularly relates to a weed-proof cultivation method of oregano interplanted with selfheal. Background Art

[0002] Oregano (Origanum vulgare L.) is a perennial herb or semi-shrub of the Lamiaceae family. It is distributed in Henan, Jiangsu, Zhejiang, Anhui, Jiangxi, Fujian, Taiwan, Hubei, Hunan, Guangdong, Guizhou, Sichuan, Yunnan, Shaanxi, Gansu, Xinjiang and Tibet in China; it grows on roadsides, hillsides, under forests and grasslands. The whole herb of oregano is used as medicine. It has a strong smell and high essential oil content. It has the effects of relieving exterior symptoms, regulating qi and removing dampness. The essential oil contained in oregano has five anti-bacterial, anti-fungal, anti-viral, antioxidant and anti-pathogen effects and improves immunity. It is one of the most effective natural plant antibiotics. Oregano is widely used in veterinary medicine, feed additives, high-end daily chemicals, and biomedicine because it is rich in unique essential oils and its broad-spectrum bactericidal effect. The market demand is large.

[0003] However, oregano seeds are small, with a thousand-grain weight of 0.05 to 0.08g, and they grow slowly during the seedling stage. Weed control during the planting process has always been a problem. Oregano is a perennial herb that generally germinates in spring, grows vigorously in summer and autumn, and withers above ground in winter. Oregano grows slowly in the early stage, has a low layer in the seedling stage, and has poor field closure, making it extremely vulnerable to weeds. Weeds compete with oregano for resources such as water, fertilizer, light, and heat, resulting in poor growth, reduced yield, and reduced quality of oregano. In severe cases, it can cause large-scale death of oregano. Traditional manual weeding is time-consuming and labor-intensive. As labor costs rise, more and more chemical weeding is used. However, frequent use of herbicides will remain in the soil and oregano plants, polluting the environment, reducing the quality of oregano, and endangering the health of consumers. Long-term use may also induce resistant weeds, falling into a vicious cycle of more and more herbicides. Therefore, it is particularly important to find a weeding method that can effectively inhibit weed growth and is environmentally friendly. Summary of the invention

[0004] In view of the defects and problems existing in the existing oregano cultivation, the present invention provides a weed control cultivation method of oregano interplanted with selfheal. The invention achieves land coverage throughout the year by interplanting oregano with selfheal, reduces weed growth, avoids the use of herbicides, improves land utilization and economic benefits, and protects the ecological environment. The solution adopted by the present invention to solve its technical problems is: 1. A weed control cultivation method of oregano interplanted with selfheal, comprising the following steps:

[0005] Step 1: Select sunny and well-drained land as the planting area, and fertilize the land in the planting area from October to November.

[0006] Step 2: After fertilization, the land in the planting area is leveled and raked, the tillage depth is 25cm to 30cm, and then a raised ridge is built; the ridge surface of the raised ridge is 100cm to 120cm wide, the furrow depth of the raised ridge is 20cm to 30cm, the furrow bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface;

[0007] Step 3: transplant the cultivated oregano seedlings into the land of the planting area by wide and narrow row planting, and then water them fully (to ensure that the soil is moist, which helps the roots of the seedlings to be in close contact with the soil, thereby promoting rooting and survival);

[0008] Step 4: Check the survival of the oregano seedlings one week after planting, and replant the oregano seedlings that have not survived;

[0009] Step 5: sow Prunella vulgaris seeds in the middle of the wide row. The sowing time of Prunella vulgaris seeds is 15 to 20 days after the oregano seedlings are planted in the narrow row;

[0010] Step 6: Weed in time when the oregano and prunella vulgaris have not completely covered the land;

[0011] Step 7: After the oregano sprouts in the early spring of the second year and the Prunella vulgaris is harvested in the second year, topdress the land in the planting area;

[0012] Step 8: During the growth period of oregano, irrigate according to the soil moisture conditions and drain in time;

[0013] Step nine, harvesting oregano and selfheal according to their actual maturity.

[0014] Furthermore, in the step 1, organic fertilizer or compound fertilizer is used for fertilization, and the organic fertilizer compound meets the requirements of NY / T525, and the compound fertilizer should meet the requirements of NY / T 496.

[0015] Furthermore, in step three, the row spacing of wide rows in wide-narrow row planting is 40 cm to 50 cm, the row spacing of narrow rows in wide-narrow row planting is 20 cm to 25 cm, and the plant spacing in wide-narrow row planting is 20 cm to 30 cm.

[0016] Furthermore, in step seven, 5kg to 10kg of urea is applied per mu when the oregano sprouts in the early spring of the second year, and 5kg to 10kg of urea is applied per mu when the selfheal is harvested in the second year.

[0017] Furthermore, in the step 5, the sowing amount of the selfheal seeds is 1kg to 1.5kg per mu, and the sowing width of the selfheal seeds is 10cm to 20cm.

[0018] Furthermore, in step eight, the irrigation water quality must comply with the requirements of GB 5084.

[0019] Beneficial effects of the invention: The weed prevention cultivation method of oregano interplanted with selfheal provided by the invention has the following beneficial effects:

[0020] 1. The weed control cultivation method of oregano interplanted with selfheal provided by the present invention utilizes the different growth rhythms of oregano and selfheal to achieve year-round land coverage, suppress weed growth, avoid the use of herbicides, and achieve green weed control. Oregano mainly grows in summer and autumn, while selfheal grows in winter and spring. The two complement each other and make full use of the land.

[0021] 2. The weed prevention cultivation method of oregano interplanted with selfheal provided by the present invention improves the land utilization rate, realizes the double harvest of oregano and selfheal on the same land, and obtains higher economic benefits. Traditional planting usually only plants one crop on a piece of land, and the land is idle most of the time. Interplanting can make full use of resources such as land, light, and water.

[0022] 3. In the weed prevention cultivation method of oregano interplanted with selfheal provided by the present invention, selfheal can be used as a natural cover for oregano, maintain soil moisture, and improve soil structure. After the selfheal is harvested, its root stubble can also increase the organic matter content of the soil, allowing the oregano to grow better.

[0023] 4. Compared with single planting, the weed prevention cultivation method of oregano intercropped with selfheal provided by the present invention can better play the role of mutual benefit between plants, such as the root system is distributed in different soil layers to reduce nutrient competition; some secretions may have a promoting effect on another plant, etc.

[0024] 5. The weed-proof cultivation method of oregano intercropped with selfheal provided by the present invention reduces the risk of disease and insect pests through diversified planting, increases farmland biodiversity, is conducive to forming a virtuous ecological cycle, promotes sustainable agricultural development, and also saves manual weeding costs, reduces herbicide residues, produces safer and healthier oregano and selfheal products, and improves product quality and added value. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with embodiments.

[0026] Example 1

[0027] The present embodiment provides a weed prevention cultivation method of oregano interplanted with selfheal, comprising the following steps:

[0028] Step 1, select sunny land with good drainage and irrigation as the planting area, and fertilize the land in the planting area from October to November. When selecting the planting area, you can choose hills, barren slopes or forest edge plots, so as to directly avoid the crops in the planting area from competing with food crops for land and prevent the growth space of food crops from being squeezed out; when applying fertilizer, 100 kg of compound fertilizer is applied per mu. In principle, organic fertilizer is used in this embodiment, and the organic fertilizer compound meets the requirements of NY / T 525. If compound fertilizer is used, the compound fertilizer should meet the requirements of NY / T496.

[0029] Step 2: After fertilization, level and harrow the land in the planting area, plow to a depth of 25cm to 30cm, and then build raised ridges; the ridge surface of the raised ridge is 100cm wide, the ditch depth of the raised ridge is 20cm to 30cm, the ditch bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface.

[0030] Step 3, adopt wide and narrow row planting, transplant the cultivated oregano seedlings into the land of the planting area, the wide row spacing is 40 cm in the wide and narrow row planting, the narrow row spacing is 20 cm in the wide and narrow row planting, the plant spacing is 30 cm in the wide and narrow row planting, and 4 rows of wide and narrow rows are planted, and then watered sufficiently to ensure that the soil is moist, which helps the root system of the seedlings to be in close contact with the soil, thereby promoting rooting and survival;

[0031] Step 4: Check the survival of oregano seedlings one week after planting, and replant the oregano seedlings that have not survived or died. Step 5: Sow Prunella vulgaris seeds in the middle of the wide row. The sowing time of Prunella vulgaris seeds is 15 to 20 days after the oregano seedlings are planted in the narrow row, and the sowing amount of Prunella vulgaris seeds is 1kg per mu, and the sowing width of Prunella vulgaris seeds is 15cm. Step 6: When the oregano and Prunella vulgaris do not completely cover the land, weed in time according to the growth of weeds; Step 7: After the oregano sprouts in the early spring of the second year and the Prunella vulgaris is harvested in the second year, the land in the planting area is topdressed once. When the oregano sprouts in the early spring of the second year, 10kg of urea is applied per mu, and when the Prunella vulgaris is harvested in the second year, 5kg of urea is applied per mu.

[0032] Step 8. During the growth period of oregano, irrigate according to the soil moisture conditions and drain in time. By irrigating according to the soil moisture conditions, it can be ensured that oregano and selfheal have sufficient water supply during the growth period. Timely drainage in rainy seasons can prevent the soil from being too wet, thereby protecting the crop root system and promoting healthy growth.

[0033] Step nine, harvesting oregano and selfheal according to their actual maturity. Selfheal is harvested when it is mature in late May of the second year, and oregano is harvested when it is mature in early July of the second year.

[0034] Example 2

[0035] The present embodiment provides a weed prevention cultivation method of oregano interplanted with selfheal, comprising the following steps:

[0036] Step 1, select sunny, well-drained and well-irrigated land as the planting area, and fertilize the land in the planting area from October to November. Oregano is relatively resistant to barrenness and drought. When selecting the planting area, you can choose hills, barren slopes or forest edge plots, so as to directly avoid crops in the planting area from competing with food crops for land and prevent the growth space of food crops from being squeezed out; when fertilizing, apply 100 kg of compound fertilizer per mu. In principle, organic fertilizer is used in this embodiment, and the organic fertilizer compound meets the requirements of NY / T 525. If compound fertilizer is used, the compound fertilizer should meet the requirements of NY / T 496.

[0037] Step 2: After fertilizing, level and harrow the land in the planting area, plow to a depth of 25cm to 30cm, and then build raised ridges; the ridge surface of the raised ridge is 120cm wide, the ditch depth of the raised ridge is 20cm to 30cm, the ditch bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface.

[0038] Step 3, adopt wide and narrow row planting, transplant the cultivated oregano seedlings into the land of the planting area, the wide row spacing in the wide and narrow row planting is 40 cm, the narrow row spacing in the wide and narrow row planting is 30 cm, the plant spacing in the wide and narrow row planting is 20 cm, and the wide and narrow row planting is 6 rows, and then watering is sufficient to ensure that the soil is moist, which helps the root system of the seedlings to be in close contact with the soil, thereby promoting rooting and survival;

[0039] Step 4: Check the survival of the oregano seedlings one week after planting, and replant those that have died. Step 5: Sow selfheal seeds in the middle of the wide rows. The sowing time of selfheal seeds is 15 to 20 days after the oregano seedlings are planted in the narrow rows. The sowing rate of selfheal seeds is 1.2 kg per mu, and the sowing width of selfheal seeds is 15 cm. Step 6: When the oregano and selfheal have not completely covered the land, weed in time according to the growth of weeds;

[0040] Step seven, after the oregano sprouts in the early spring of the second year and the selfheal is harvested in the second year, the land in the planting area should be topdressed with 8kg of urea per mu when the oregano sprouts in the early spring of the second year, and after the selfheal is harvested in the second year, 8kg of urea per mu should be topdressed.

[0041] Step 8. During the growth period of oregano, irrigate according to the soil moisture conditions and drain in time. By irrigating according to the soil moisture conditions, it can be ensured that oregano and selfheal have sufficient water supply during the growth period. Timely drainage in rainy seasons can prevent the soil from being too wet, thereby protecting the crop root system and promoting healthy growth.

[0042] Step nine, harvesting oregano and selfheal according to their actual maturity. Selfheal is harvested when it is mature in late May of the second year, and oregano is harvested when it is mature in early July of the second year.

[0043] Example 3

[0044] The present embodiment provides a weed prevention cultivation method of oregano interplanted with selfheal, comprising the following steps:

[0045] Step 1, select sunny, well-drained and well-irrigated land as the planting area, and fertilize the land in the planting area from October to November. Oregano is relatively resistant to barrenness and drought. When selecting the planting area, you can choose hills, barren slopes or forest edge plots, so as to directly avoid crops in the planting area from competing with food crops for land and prevent the growth space of food crops from being squeezed out; when fertilizing, apply 100 kg of compound fertilizer per mu. In principle, organic fertilizer is used in this embodiment, and the organic fertilizer compound meets the requirements of NY / T 525. If compound fertilizer is used, the compound fertilizer should meet the requirements of NY / T 496.

[0046] Step 2: After fertilizing, level and harrow the land in the planting area, plow to a depth of 25cm to 30cm, and then build raised ridges; the ridge surface of the raised ridge is 110cm wide, the ditch depth of the raised ridge is 20cm to 30cm, the ditch bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface.

[0047] Step 3, adopt wide and narrow row planting, transplant the cultivated oregano seedlings into the land of the planting area, the wide row spacing in the wide and narrow row planting is 50 cm, the narrow row spacing in the wide and narrow row planting is 30 cm, the plant spacing in the wide and narrow row planting is 20 cm, and the wide and narrow row planting is 4 rows, and then fully watered to ensure that the soil is moist, which helps the root system of the seedlings to be in close contact with the soil, thereby promoting rooting and survival;

[0048] Step 4: Check the survival of the oregano seedlings one week after planting, and replant those that have died. Step 5: Sow selfheal seeds in the middle of the wide rows. The sowing time of selfheal seeds is 15 to 20 days after the oregano seedlings are planted in the narrow rows. The sowing rate of selfheal seeds is 1.5 kg per mu, and the sowing width of selfheal seeds is 20 cm. Step 6: When the oregano and selfheal have not completely covered the land, weed in time according to the growth of weeds;

[0049] Step seven, after the oregano sprouts in the early spring of the second year and the selfheal is harvested in the second year, the land in the planting area should be topdressed with 10kg of urea per mu when the oregano sprouts in the early spring of the second year, and after the selfheal is harvested in the second year, 5kg of urea per mu should be topdressed with 5kg of urea per mu.

[0050] Step 8. During the growth period of oregano, irrigate according to the soil moisture conditions and drain in time. By irrigating according to the soil moisture conditions, it can be ensured that oregano and selfheal have sufficient water supply during the growth period. Timely drainage in rainy seasons can prevent the soil from being too wet, thereby protecting the crop root system and promoting healthy growth.

[0051] Step nine, harvesting oregano and selfheal according to their actual maturity. Selfheal is harvested when it is mature in late May of the second year, and oregano is harvested when it is mature in early July of the second year.

[0052] Comparative Example 1

[0053] A method for cultivating oregano provided in this comparative example comprises the following steps:

[0054] Step 1, select sunny land with good drainage and irrigation as the planting area, and fertilize the land in the planting area from October to November. When selecting the planting area, you can choose hills, barren slopes or forest edge plots, so as to directly avoid the crops in the planting area from competing with food crops for land and prevent the growth space of food crops from being squeezed out; when applying fertilizer, 100 kg of compound fertilizer is applied per mu. In principle, organic fertilizer is used in this embodiment, and the organic fertilizer compound meets the requirements of NY / T 525. If compound fertilizer is used, the compound fertilizer should meet the requirements of NY / T496.

[0055] Step 2: After fertilization, level and harrow the land in the planting area, plow to a depth of 25cm to 30cm, and then build raised ridges; the ridge surface of the raised ridge is 100cm wide, the ditch depth of the raised ridge is 20cm to 30cm, the ditch bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface.

[0056] Step 3, adopt wide and narrow row planting, transplant the cultivated oregano seedlings into the land of the planting area, the wide row spacing is 40 cm in the wide and narrow row planting, the narrow row spacing is 20 cm in the wide and narrow row planting, the plant spacing is 30 cm in the wide and narrow row planting, and 4 rows of wide and narrow rows are planted, and then watered sufficiently to ensure that the soil is moist, which helps the root system of the seedlings to be in close contact with the soil, thereby promoting rooting and survival;

[0057] Step 4: Check the survival of oregano seedlings one week after planting, and replant those that have not survived or died. Step 5: Weed in time according to the growth of weeds;

[0058] Step six, after the oregano sprouts in the early spring of the second year and the selfheal is harvested in the second year, the land in the planting area is topdressed with 10kg of urea per mu when the oregano sprouts in the early spring of the second year, and after the selfheal is harvested in the second year, 5kg of urea per mu is applied when topdressing.

[0059] Step seven, during the growth period of oregano, irrigate according to the soil moisture conditions and drain in time. By irrigating according to the soil moisture conditions, it can be ensured that oregano and selfheal have sufficient water supply during the growth period. Timely drainage in rainy seasons can prevent the soil from being too wet, thereby protecting the crop roots and promoting healthy growth.

[0060] Step eight, harvest oregano and selfheal according to the actual maturity of oregano.

[0061] Comparative Example 2

[0062] A method for cultivating oregano provided in this comparative example comprises the following steps:

[0063] Step 1, select sunny, well-drained and well-irrigated land as the planting area, and fertilize the land in the planting area from October to November. Oregano is relatively resistant to barrenness and drought. When selecting the planting area, you can choose hills, barren slopes or forest edge plots, so as to directly avoid crops in the planting area from competing with food crops for land and prevent the growth space of food crops from being squeezed out; when fertilizing, apply 100 kg of compound fertilizer per mu. In principle, organic fertilizer is used in this embodiment, and the organic fertilizer compound meets the requirements of NY / T 525. If compound fertilizer is used, the compound fertilizer should meet the requirements of NY / T 496.

[0064] Step 2: After fertilizing, level and harrow the land in the planting area, plow to a depth of 25cm to 30cm, and then build raised ridges; the ridge surface of the raised ridge is 120cm wide, the ditch depth of the raised ridge is 20cm to 30cm, the ditch bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface.

[0065] Step 3, adopt wide and narrow row planting, transplant the cultivated oregano seedlings into the land of the planting area, the wide row spacing in the wide and narrow row planting is 40 cm, the narrow row spacing in the wide and narrow row planting is 30 cm, the plant spacing in the wide and narrow row planting is 20 cm, and the wide and narrow row planting is 6 rows, and then watering is sufficient to ensure that the soil is moist, which helps the root system of the seedlings to be in close contact with the soil, thereby promoting rooting and survival;

[0066] Step 4: Check the survival of oregano seedlings one week after planting, and replant those that have not survived or died. Step 5: Weed in time according to the growth of weeds;

[0067] Step six, after the oregano sprouts in the early spring of the second year and the selfheal is harvested in the second year, the land in the planting area is topdressed with 8 kg of urea per mu when the oregano sprouts in the early spring of the second year, and after the selfheal is harvested in the second year, 8 kg of urea per mu is topdressed.

[0068] Step seven, during the growth period of oregano, irrigate according to the soil moisture conditions and drain in time. By irrigating according to the soil moisture conditions, it can be ensured that oregano and selfheal have sufficient water supply during the growth period. Timely drainage in rainy seasons can prevent the soil from being too wet, thereby protecting the crop roots and promoting healthy growth.

[0069] Step eight, harvest oregano and selfheal according to the actual maturity of oregano.

[0070] Comparative Example 3

[0071] A method for cultivating oregano provided in this comparative example comprises the following steps:

[0072] Step 1, select sunny, well-drained and well-irrigated land as the planting area, and fertilize the land in the planting area from October to November. Oregano is relatively resistant to barrenness and drought. When selecting the planting area, you can choose hills, barren slopes or forest edge plots, so as to directly avoid crops in the planting area from competing with food crops for land and prevent the growth space of food crops from being squeezed out; when fertilizing, apply 100 kg of compound fertilizer per mu. In principle, organic fertilizer is used in this embodiment, and the organic fertilizer compound meets the requirements of NY / T 525. If compound fertilizer is used, the compound fertilizer should meet the requirements of NY / T 496.

[0073] Step 2: After fertilizing, level and harrow the land in the planting area, plow to a depth of 25cm to 30cm, and then build raised ridges; the ridge surface of the raised ridge is 110cm wide, the ditch depth of the raised ridge is 20cm to 30cm, the ditch bottom width of the raised ridge is 20cm to 25cm, and 4 to 6 rows can be planted on the ridge surface.

[0074] Step 3, adopt wide and narrow row planting, transplant the cultivated oregano seedlings into the land of the planting area, the wide row spacing in the wide and narrow row planting is 50 cm, the narrow row spacing in the wide and narrow row planting is 30 cm, the plant spacing in the wide and narrow row planting is 20 cm, and the wide and narrow row planting is 4 rows, and then fully watered to ensure that the soil is moist, which helps the root system of the seedlings to be in close contact with the soil, thereby promoting rooting and survival;

[0075] Step 4: Check the survival of oregano seedlings one week after planting, and replant those that have not survived or died. Step 5: Weed in time according to the growth of weeds;

[0076] Step six, after the oregano sprouts in the early spring of the second year and the selfheal is harvested in the second year, the land in the planting area is topdressed with 10kg of urea per mu when the oregano sprouts in the early spring of the second year, and after the selfheal is harvested in the second year, 5kg of urea per mu is applied when topdressing.

[0077] Step seven, during the growth period of oregano, irrigate according to the soil moisture conditions and drain in time. By irrigating according to the soil moisture conditions, it can be ensured that oregano and selfheal have sufficient water supply during the growth period. Timely drainage in rainy seasons can prevent the soil from being too wet, thereby protecting the crop roots and promoting healthy growth.

[0078] Step eight, harvest oregano and selfheal according to the actual maturity of oregano.

[0079] The comparative test of weed control cultivation method of oregano intercropping with Prunella vulgaris is as follows:

[0080] The experiment was divided into plots 1, 2, 3, 4, 5 and 6, each plot having a size of 66.7 m × 10 m; plots 1, 2 and 3 were respectively planted with oregano and selfheal using the weed prevention cultivation method of oregano intercropping with selfheal in the above-mentioned embodiments 1-3; plots 4, 5 and 6 were only planted with oregano, and the planting methods of plots 4, 5 and 6 were respectively planted with oregano using the oregano cultivation method in the above-mentioned comparative examples 1-3.

[0081] The first trial: On October 15, 2022, oregano was planted on plots 1, 2, 3, 4, 5, and 6. On October 30, 2022, Prunella vulgaris seeds were sown in the middle of the wide rows of oregano on plots 1, 2, and 3. Prunella vulgaris was not sown on plots 4, 5, and 6. During this period, normal field management was carried out and weeding hours were recorded. Prunella vulgaris was harvested on May 25, 2023, and oregano was harvested on July 10, 2022.

[0082] Second trial: On October 20, 2022, oregano was planted on plots 1, 2, 3, 4, 5, and 6. On November 5, 2022, Prunella vulgaris seeds were sown in the middle of the wide rows of oregano on plots 1, 2, and 3. Prunella vulgaris was not sown on plots 4, 5, and 6. During this period, normal field management was carried out and weeding hours were recorded. Prunella vulgaris was harvested on May 20, 2023, and oregano was harvested on July 5, 2022.

[0083] The test results are shown in the following table.

[0084] Table 1: Results of the weed control cultivation trial of oregano intercropping with Prunella vulgaris in 2022

[0085]

[0086] Table 2: Results of the weed control cultivation trial of oregano intercropping with Prunella vulgaris in 2023

[0087]

[0088]

[0089] As can be seen from Table 1, in 2022, the average yield of oregano per mu in Prunella vulgaris intercropped with oregano in Prunella vulgaris No. 1, Prunella vulgaris No. 2 and Prunella vulgaris No. 3 was 313.7 kg, 36.7 kg of Prunella vulgaris per mu, and 3.17 workers per mu on average. The average yield of oregano per mu in Prunella vulgaris No. 4, Prunella vulgaris No. 5 and Prunella vulgaris No. 6 was 340.1 kg, and 9.5 workers per mu on average. In 2023, the average yield of oregano per mu in Prunella vulgaris intercropped with oregano in Prunella vulgaris No. 1, Prunella vulgaris No. 2 and Prunella vulgaris No. 3 was 312.6 kg, 33.9 kg of Prunella vulgaris per mu, and 3.33 workers per mu on average. The average yield of oregano per mu in Prunella vulgaris No. 4, Prunella vulgaris No. 5 and Prunella vulgaris No. 6 was 339.2 kg, and 9.83 workers per mu on average. Only comparing the calculated output value and weed control costs, with oregano at 10 yuan / kg, Prunella vulgaris at 20 yuan / kg and 100 yuan / work-hour, the weed control cultivation benefits of oregano intercropped with Prunella vulgaris are as follows:

[0090] Table 3: Weed control benefits of intercropping oregano with Prunella vulgaris

[0091]

[0092] It can be found from Tables 1, 2 and 3 that although the oregano yield of the oregano intercropping method for weed prevention is lower than that of the method of planting oregano alone, the intercropped selfheal has a higher economic value. Overall, the oregano intercropping method for weed prevention will increase the value by 470 yuan per mu in 2022 and reduce the weeding cost by 633 yuan, and increase the value by 412 yuan per mu in 2022 and reduce the weeding cost by 650 yuan.

[0093] Therefore, the weed prevention cultivation method of intercropping oregano with selfheal can be used to reduce the living space of weeds and the base number of weeds in the field by taking advantage of the staggered growth of oregano and selfheal, thereby achieving weed control. At the same time, it can make full use of natural resources such as land, light energy, air, water and heat, give play to marginal effects and mutual benefits between plants, achieve the comprehensive benefits of double harvests, and increase income. Specifically: oregano stops growing in winter and grows slowly in spring, selfheal grows on the ground in a rosette shape in winter and grows rapidly in spring, and can be harvested in late May. At this time, oregano begins to enter a rapid growth period. The inconsistent growth states of oregano and selfheal in different seasons can achieve maximum coverage of the land, thereby compressing the space for weed growth, avoiding the use of herbicides, and achieving green weed control. This method simultaneously utilizes the different growth periods of oregano and selfheal, improves the utilization rate of land, and at the same time, it can make full use of natural resources such as light energy, air, water and heat, give play to marginal effects and mutual benefits between plants, achieve the comprehensive benefits of double harvests, increase income, and realize the improvement of economic value.

[0094] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention, such as replacing Prunella vulgaris with economic plants such as Noodles, Shepherd's Purse, etc. that grow similarly to Prunella vulgaris, should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A weed control cultivation method of oregano intercropping with selfheal, characterized in that: The following steps are involved: Step 1: Select sunny and well-drained land as the planting area, and fertilize the land in the planting area from October to November. Step 2: After fertilization, the land in the planting area is leveled and raked, the tillage depth is 25 cm to 30 cm, and then a raised ridge is built; the ridge surface of the raised ridge is 100 cm to 120 cm wide, the furrow depth of the raised ridge is 20 cm to 30 cm, the furrow bottom width of the raised ridge is 20 cm to 25 cm, and 4 to 6 rows can be planted on the ridge surface; Step 3: Use wide and narrow row planting to transplant the cultivated oregano seedlings into the land in the planting area, and then water them sufficiently (to ensure that the soil is moist, which helps the roots of the seedlings to be in close contact with the soil, thereby promoting rooting and survival); Step 4: Check the survival of the oregano seedlings one week after planting, and replant the oregano seedlings that have not survived; Step 5: sow Prunella vulgaris seeds in the middle of the wide row. The sowing time of Prunella vulgaris seeds is 15 to 20 days after the oregano seedlings are planted in the narrow row; Step 6: Weed in time when the oregano and prunella vulgaris have not completely covered the land; Step 7: After the oregano sprouts in the early spring of the second year and the Prunella vulgaris is harvested in the second year, topdress the land in the planting area; Step 8: During the growth period of oregano, irrigate according to the soil moisture conditions and drain in time; Step nine, harvesting oregano and selfheal according to their actual maturity.

2. The weed control cultivation method of oregano interplanted with selfheal according to claim 1, characterized in that: In the step 1, organic fertilizer or compound fertilizer is used for fertilization. The organic fertilizer compound meets the requirements of NY / T 525, and the compound fertilizer meets the requirements of NY / T 496.

3. The weed control cultivation method of oregano interplanted with selfheal according to claim 1, characterized in that: In the step three, the wide row spacing in the wide-narrow row planting is 40 cm to 50 cm, the narrow row spacing in the wide-narrow row planting is 20 cm to 25 cm, and the plant spacing in the wide-narrow row planting is 20 cm to 30 cm.

4. The weed control cultivation method of oregano interplanted with selfheal according to claim 1, characterized in that: In the step seven, 5kg to 10kg of urea is applied per mu during the early spring when new buds of oregano sprout, and 5kg to 10kg of urea is applied per mu during the topdressing after the harvest of selfheal in the second year.

5. The weed control cultivation method of oregano interplanted with Prunella vulgaris according to claim 1, characterized in that: In the step 5, the sowing amount of the selfheal seeds is 1kg to 1.5kg per mu, and the sowing width of the selfheal seeds is 10 cm to 20 cm.

6. The weed control cultivation method of oregano interplanted with Prunella vulgaris according to claim 1, characterized in that: In step eight, the irrigation water quality must comply with the requirements of GB 5084.

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