A year-round planting method for interplanting watermelon with pepper

Abstract

The invention discloses a year-round planting method of watermelon interplanting pepper, which specifically comprises the following steps: step 1, step 1, spring field management: when the melon vine is 45-50cm long, fertilizing the watermelon and the pepper at the same time, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2, fertilizing the watermelon and the pepper at the same time during the watermelon fruit swelling period, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 13:2, topdressing the watermelon and the pepper at the same time after the first batch of watermelons are picked, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2, and fertilizing only the pepper 3-4d before each harvest of the pepper, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2; step 2, autumn field management: repeating the fertilization method in step 1; the planting placement disclosed by the invention can realize two crops a year, and effectively improves the yield of watermelon and pepper.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural farming methods, and particularly relates to a year-round planting method for intercropping watermelons with peppers. Background Art

[0002] Watermelon can be called the "king of summer". It is refreshing and thirst-quenching, and tastes sweet and juicy. It is a good fruit for summer. In addition to being fat-free and cholesterol-free, watermelon contains a large amount of glucose, malic acid, fructose, protein amino acids, lycopene and rich vitamin C. It is a highly nutritious, pure and safe food. The sugar content in the flesh is generally 5-12%, including glucose, fructose and sucrose; and pepper is one of the indispensable condiments in life, and its economic value is also very considerable. Now in the cultivation of watermelon, a larger row spacing is left in the early stage, which is suitable for the growth of pepper. Intercropping of pepper and watermelon can make full use of resources, thereby improving economic benefits. In recent years, pepper and watermelon have become the preferred vegetable crops for agricultural industrial structure adjustment and farmers' income increase.

[0003] At present, a scientific and reasonable fertilization system has not been formed in the year-round intercropping of peppers and watermelons. Farmers still rely on the fertilization methods when watermelons and peppers are planted separately.

[0004] The existing fertilization method cannot meet the nutrient requirements of watermelon and pepper at various growth stages when intercropping. It is easy for excessive fertilizer to lead to limited crop elongation or even affect the soil quality. Therefore, the existing planting method can easily lead to slow production of watermelon and pepper, and cause the quality of crops to decline. Based on this, it is necessary to develop a year-round planting method suitable for intercropping watermelon and pepper. Summary of the invention

[0005] The invention provides a year-round planting method for watermelon-pepper intercropping, which can realize two crops a year and effectively improve the yields of watermelon and pepper.

[0006] The technical solution adopted by the present invention is a method for planting watermelon and pepper throughout the year, which is characterized by comprising the following steps:

[0007] Step 1, spring field management: when the vine is 45-50cm long, fertilize the watermelon and pepper at the same time, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2; during the watermelon fruit expansion period, fertilize the watermelon and pepper at the same time, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 13:2; after the first batch of watermelons are picked, topdress the watermelon and pepper at the same time, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2; 3-4 days before each harvest of pepper, only fertilize the pepper, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2;

[0008] Step 2: Autumn field management: Repeat the fertilization method in step 1.

[0009] After the spring crop is over, the greenhouse needs to be sealed. The specific method is: after clearing the greenhouse for the spring crop, apply farmyard manure, then cover the ground with plastic film, and finally close the greenhouse after irrigating with plenty of water, and end it in early August.

[0010] When the greenhouse is sealed, the amount of farmyard manure used is 2000-3000kg per mu of land.

[0011] After the seedlings are transplanted and the seedlings are grown in step 1, 1% urea is first sprayed on the watermelons and peppers, with the amount of urea being 4-5 kg ​​per mu. Meanwhile, when the vines are 45-50 cm long, during the fruit swelling period of the watermelons, after the first batch of watermelons are harvested, and 3-4 days before each harvest of the peppers, the amount of fertilizer applied is 4-5 kg ​​per mu, and drip irrigation is performed after each fertilization.

[0012] When planting in spring, the row spacing of watermelon is 1.9-2m, the plant spacing is 0.4-0.5m, the row spacing of pepper is 0.4-0.5m, the plant spacing is 0.4-0.5m, and the plant spacing is 0.4-0.5m. 3-4 peppers are planted between every two rows of watermelon. When planting in autumn, the row spacing and plant spacing of watermelon and pepper are the same as those in spring.

[0013] Before transplanting in spring, seedlings should be raised first. When raising seedlings, the watermelon variety should be any one of Fengle 8424, Zaojia, and Texiaofeng. The pepper seeds should be line pepper, sheep horn pepper, screw pepper, or thin-skinned pepper, such as Xianjin 968, Fenglu No. 2, Fengziyun No. 1, and Kelu series. Before transplanting in autumn, seedlings should be raised first. When raising seedlings, the watermelon variety should be any one of Xiayang, Fengle No. 1, Zaojia 8424, and Zhengza No. 5. The pepper seeds should be line pepper or sheep horn pepper.

[0014] When raising seedlings, first air the pepper seeds for 1-2 days, then soak the seeds in 50-55℃ warm water for 15-20 minutes, then continue to soak at room temperature for 4-12 hours, finally place the soaked seeds in a 28-30℃ constant temperature box for germination, rinse with warm water 1-2 times a day, 4-5 days later, when 70% of the seeds are white, they can be sown. When sowing, sow the white pepper or watermelon seeds in the plug tray, and cover with 1-2cm of seedling medium, and then cover with a film to increase temperature and moisture retention. Remove the film in time after more than 50% of the pepper seeds have emerged, and remove the covering film in time when the watermelon cotyledons are unearthed.

[0015] Apply basal fertilizer before spring and autumn planting, and carry out land preparation after the application of basal fertilizer. Specifically, apply 1-3t of decomposed farmyard manure or 100-150kg of biological organic fertilizer per mu, plus 35-38kg of nitrogen, phosphorus and potassium ternary compound fertilizer. While preparing the land in spring, lay drip irrigation, and finally lay ground film. Three-layer covering technology is used in spring, i.e. ground film + small arch shed + plastic greenhouse. After land preparation in autumn, small arch shed + plastic greenhouse is used.

[0016] When laying drip irrigation, only the drip irrigation pipe is laid between two rows of peppers. At the same time, the water supply pipe is located at one end of the greenhouse and connected to the pressurized water source, and an independent control switch is provided between each drip irrigation pipe.

[0017] The beneficial effects of the present invention are:

[0018] The invention discloses a method for planting watermelons and peppers throughout the year. The method comprises the following steps: applying compound fertilizer and water-soluble fertilizer to watermelons and peppers at the same time when the watermelon vines are 45-50 cm long, the watermelon fruit swelling period, and the first watermelon harvesting period. The compound fertilizer and water-soluble fertilizer are applied to the peppers only 3-4 days before each harvesting of the peppers. The method adopts the method of applying compound fertilizer and water-soluble fertilizer in stages, so that the release of fertilizer nutrients is synchronized with the absorption of crops, and the nutritional needs of watermelons and peppers at various growth stages are met. At the same time, because the compound fertilizer contains a large amount of elements and organic matter, the fertilizer can supply the needs of microbial activities in the soil. The quick-acting nutrients accelerate the reproduction and activity of microorganisms. The microbial activity dissolves the insoluble nutrients in the soil. The microbial activity makes the land loose and soft while improving the soil's ability to retain water and fertilizer, so that the above-ground part grows vigorously, the dry matter conversion is sufficient, and the yield is increased. In summary, through the planting method of the present invention, the root dry matter conversion rate of watermelon and pepper is increased by more than 5%, the stem and leaf dry matter conversion rate is increased by 10%, and the fruit dry matter conversion rate is increased by more than 15%, achieving a spring watermelon yield of 1200-1300kg / 667m 2 , while pepper 1100~1200kg / 667m 2 Autumn watermelon yield 1000~1200kg / 667m 2 , while pepper 1200 ~ 1400kg / 667m 2 Compared with traditional planting methods, the total yield of watermelon and pepper increased by 40%. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scheme of the present invention.

[0020] Example

[0021] A method for planting watermelon and pepper throughout the year, comprising the following steps:

[0022] Step 1, spring field management: after planting and seedling acclimatization, spray 1% urea all over the field, 4-5kg urea per mu, fertilize watermelon and pepper at the same time when vine length is 45-50cm, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2, 4-5kg fertilizer per mu, fertilize watermelon and pepper at the same time during the fruit expansion period, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 13:2, 13-15kg fertilizer per mu, After the first batch of watermelons are harvested, watermelons and peppers are top-dressed at the same time. The fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2, and 4-5 kg ​​of fertilizer is applied per mu. After the topdressing, 1% urea is sprayed again, and the amount of urea per mu is 4-5 kg. Fertilize only peppers 3-4 days before each harvest. The fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2, and 4-5 kg ​​of fertilizer is applied per mu. Drip irrigation must be carried out after each fertilization.

[0023] Furthermore, seedlings should be raised before spring planting. When raising seedlings, watermelon varieties should be selected as early-maturing types with stable plant growth and high resistance to low temperatures. They should mature 28-30 days after pollination, such as Fengle 8424, Zaojia, Texiaofeng, etc. They should be put on the market early and have good benefits. At the same time, the symbiotic period with peppers is short and there are fewer symbiotic diseases. Pepper varieties should be selected such as line peppers, sheep horn peppers, screw peppers or thin-skinned peppers with compact plant shape, medium development, good resistance to weak light, strong resistance to adversity, and fast fruit expansion, such as Xianjin 968, Fenglu No. 2, Fengziyun No. 1, Kelu series, etc. Select pepper seeds with bright color and full grains.

[0024] When raising seedlings, first air the pepper seeds for 1-2 days, then soak the seeds in 50-55℃ warm water for 15-20 minutes, then continue to soak at room temperature for 4-12 hours, and finally place the soaked seeds in a 28-30℃ constant temperature box for germination, rinse with warm water 1-2 times a day, and after 4-5 days, 70% of the seeds can be sown after they turn white. When sowing, sow the white pepper or watermelon seeds in the plug tray, and cover them with 1-2cm seedling medium, and then cover them with film to increase temperature and moisture. If the Huai River area adopts high-efficiency and energy-saving solar greenhouse seedling cultivation, pepper sowing can be carried out around December 12 of the previous year, and watermelon sowing can be carried out around January 11 of the current year. If standard plastic greenhouses plus small arch sheds are used for plug tray seedling cultivation, pepper sowing should be about 15 days earlier than the above-mentioned greenhouse, and watermelon sowing should be about 6 days earlier.

[0025] After sowing, maintain the bed soil temperature at 25-30℃ as much as possible before emergence to ensure uniform emergence. Remove the covering film in time after more than 50% of the pepper seeds have emerged. Remove the covering film in time when the cotyledons of watermelon have emerged. Increase the light appropriately to lower the night temperature and cultivate strong seedlings. After the seedlings have emerged and grown to 2 leaves and 1 heart, combine watering with the growth of the seedlings and remove the weak and diseased seedlings.

[0026] In addition, when implementing intercropping, the row and plant spacing between different crops must be scientifically designed, mainly based on the growth period of the crops, plant type, and root depth. The planting density of watermelons and peppers in the existing planting method has not been strictly tested and screened, and is randomly matched, resulting in poor lighting conditions and poor ventilation for watermelons after the peppers are closed, which makes it easy to develop diseases, especially in rainy years. Therefore, in this application, when planting in mid-spring, the row spacing of watermelons is 1.9-2m, the plant spacing is 0.4-0.5m, the row spacing of peppers is 0.4-0.5m, the plant spacing is 0.4-0.5m, and 3-4 rows of peppers are planted between every two rows of watermelons. When planting in autumn, the row spacing and plant spacing of watermelons and peppers are the same as those in spring.

[0027] Step 2, summer maintenance: After clearing the greenhouse in spring, apply farmyard manure and cover the ground with mulch, irrigate with plenty of water, and then strictly close the greenhouse until early August. The amount of farmyard manure is 2000-3000kg per mu, and the greenhouse is sealed for about 25-30 days. High temperature sealed greenhouse and water-land rotation technology are used to solve the serious diseases and insect pests of subsequent crops caused by continuous cropping and salinization of facility soil;

[0028] Step 3, autumn field management: the fertilization time and amount are the same as those in step 2. Seedlings are raised before autumn planting. When raising seedlings, the watermelon variety is selected from any one of Xiayang, Fengle No. 1, Zaojia 8424, and Zhengza No. 5, and the pepper seeds are selected from line pepper or Yangjiao.

[0029] In addition, before planting in spring and autumn, basal fertilizer should be applied first, and land should be prepared after the application of basal fertilizer. Specifically, 1-3 tons of decomposed farmyard manure or 100-150 kg of biological organic fertilizer should be applied per mu, and 35-38 kg of nitrogen, phosphorus and potassium compound fertilizer should be applied. Drip irrigation should be laid while preparing the land in spring, and finally mulch should be laid. Three-layer covering technology is used in spring, namely mulch + small arch shed + plastic shed. After the land preparation in autumn, small arch shed + plastic shed is used. The suitable planting time in Jianghuai area is February 28-March 2.

[0030] When laying drip irrigation, only the drip irrigation pipe is laid between two rows of peppers. At the same time, the water supply pipe is located at one end of the greenhouse and connected to the pressure water source, and an independent control switch is set between each drip irrigation pipe. After the drip irrigation pipe is installed, it is covered with a silver-black two-color mulch film to control moisture, prevent weeds and increase temperature, increase light at the bottom of the plant, repel aphids, and reduce the occurrence of viral diseases.

[0031] When transplanting, carry soil with you, and immediately water the plants to help them take root and spray them with fungicides and insecticides to ensure their normal and steady growth.

[0032] In the early stage after spring planting, light management is the main focus. On sunny days, uncover the small arch shed at around 8:00 am to increase the light exposure of the watermelon. On cloudy days, uncover it 0.5 hours in advance. At 9:00, shake up the skirt film on both sides of the plastic greenhouse for ventilation. In the early stage, the temperature is low, and the height of the film on both sides is about 30 cm. In the later stage, as the temperature rises, the height of the film is gradually increased to enhance the ventilation effect in the greenhouse, supplement and balance CO2, and prevent excessive temperature from causing harm to the plants. Cover the small arch shed at around 17:00 and close the plastic greenhouse. Observe the plant's seedling recovery at any time, check and supplement the seedlings in time, and keep records.

[0033] During the entire management period, pay attention to pest and disease control at any time: In the early stage of watermelon wilt, use carbendazim hydrochloride and methyl thiophanate to irrigate the roots, and you can also use gourd or gourd grafting to change the roots for prevention; for pepper blight, spray metalaxyl mancozeb and cypermethrin wettable powder; for watermelon / pepper anthracnose, spray 3-4 times alternately with mancozeb, thiophanate, carbendazim, etc.; for powdery mildew, chlorothalonil and triadimefon smoke can be used for fumigation, or spraying with triamcinol. Whiteflies and aphids can be killed by trapping with yellow sticky insect boards, or fumigated with isoprocarb smoke or sprayed with acetamiprid, high-efficiency cypermethrin, etc.; for tea yellow mites and red spiders, use cypermethrin, cypermethrin, chlorpyrifos, avermectin + cypermethrin, etc.; for leaf miners, use avermectin + imidacloprid, spirotetramat, etc. spray.

[0034] In this mode, artificial assisted pollination of watermelons begins around April 10 to increase the fruit setting rate. Remove the first female flower (the fruit is usually deformed and small), and only pollinate the second (or third in a small amount) female flower on the main vine and side vines. The pollination time is 7:00-10:00 in the morning. After the fruit is set, only one melon is selected for each plant. All watermelon plants are cultivated on the ground, double-vine pruning, and excess side branches are cut off in time. The main vine is straightened between the pepper plants. When the main vine of the watermelon reaches the length of the plot, it is pinched in time. The side branches below the gate pepper of the pepper plant are removed at any time to increase the early yield and facilitate ventilation and light transmission. If the number of rows of peppers planted is 2-3, the side branches do not need to be removed due to the existence of marginal effects, saving time and labor.

[0035] Starting from May 10, green peppers and ripe watermelon fruits will be harvested in time and packaged appropriately for market release.

[0036] When planting in autumn, choose a sunny afternoon or a rainy day to dig holes for planting. Pay attention to changing crops as much as possible, that is, plant peppers in the rows planted with watermelons in the original spring crop in autumn, and change the outermost row of peppers in the original spring crop to watermelons. The spacing between plants and rows is 50cm. The ratio of rows of watermelons and peppers in a 2m wide ridge is 1:3, and the ratio of rows of watermelons and peppers in a 2.5m wide ridge is 1:4.

[0037] Immediately after planting, water the roots and apply fungicides and insecticides to improve the survival rate. In the early stage, the focus is to provide proper shade on sunny days to promote seedling growth. Generally, 35% shade nets are used for external coverage. At the same time, pay attention to greenhouse ventilation to prevent high temperature from burning the seedlings. After the seedlings have grown, cultivate the soil once, and let the seedlings stay for about 5 days. Then, apply nitrogen-based water-soluble fertilizer once (5-8kg / 667m 2 When the watermelon vine is 30cm long (the pepper plant height is about 25cm), combine it with inter-cultivation and apply nitrogen, phosphorus and potassium three-element compound fertilizer 20-25kg / 667m 2 During the flowering period, pay attention to ventilation and control the irrigation of watermelons. Generally, only the drip irrigation pipes of pepper rows are opened, and artificial assisted pollination is carried out at the same time. In the early stage of melon swelling, apply 20-25kg / 667m3 of triple compound fertilizer. 2 , watering to promote fruit growth, daytime temperature 25 ~ 30 ℃. In the later stage of temperature management, heat preservation is the main focus. In mid-to-late October, the ventilation time and the size of the vents in the greenhouse are adjusted according to the temperature conditions to increase the temperature difference between day and night to facilitate fruit growth and watermelon sugar accumulation. Stop watering 7 days before the watermelon matures to increase the sugar content.

[0038] If watermelons are planted on the ground, double vine pruning and pinching are the same as in spring; if they are planted on supports, ventilation and light transmission can be enhanced. When the vines are about 25 cm long, supports are installed, double vine pruning is still performed, vines are tied immediately, and the tops are pinched when they are 2 to 2.2 m. Due to the seasonal changes in greenhouse temperature and light, pepper plants do not grow as well in autumn as in spring, so there is no need to remove side branches. During the entire growth period, pay close attention to the occurrence of diseases and insect pests, and prevent and control them in a timely manner, using the same methods as in spring.

[0039] Watermelons are generally harvested in a relatively concentrated manner and can be picked and put on the market around October 15. Peppers can also be harvested one after another. However, in order to obtain better benefits, peppers can also be "kept alive" in the greenhouse, that is, the pepper fruits are not picked and put into cold storage but kept together on the plants (also called plant banks) until they are put on the market during the two festivals (New Year's Day - Spring Festival). When the minimum outside temperature is close to 5℃, a small arch shed needs to be set up in the greenhouse to ensure that the pepper plants and their fruits are not damaged by frost.

[0040] In summary, the present invention provides a year-round planting method for watermelon and pepper. In early spring, a three-layer covering technology is adopted, namely, mulch film + small arch shed + plastic shed. Watermelon and pepper seedlings are planted from February 28 to March 2. Watermelon and green pepper fruits are put on the market around May 10, red pepper is put on the market at the end of May, and the shed is cleared before July 10. The watermelon yield is 1200-1300kg / 667m 2 , while pepper 1100~1200kg / 667m 2 The initial price of watermelon was about 7.0 yuan / kg, with an average per-acre output value of about 6,000 yuan; the average price of pepper fruit was about 6.6 yuan / kg, with an average per-acre output value of about 7,000 yuan. After deducting costs, the net profit per acre was 8,000 yuan.

[0041] In autumn, two-layer covering technology is used, i.e. plastic greenhouse + small arch shed. Watermelon and pepper seedlings are planted from August 8 to 10, and watermelon and green pepper fruits are put on the market from October 10 to 20. Peppers can be "alive and fresh" and harvested in succession. The sheds are cleared by the end of the year. Watermelon yield 1000-1200kg / 667m 2 , while pepper 1200 ~ 1400kg / 667m 2 The average unit price of watermelon is about 4.0 yuan / kg, and the average per-acre output value is about 4,000 yuan; the average unit price of pepper fruit is about 7.0 yuan / kg, and the average per-acre output value is about 8,000 yuan. After deducting costs, the net profit per acre is 8,000 yuan.

[0042] The production practice from 2021 to 2022 showed that under the optimal combination mode (that is, the watermelon variety Zaojia 8424 is planted at a row spacing × plant spacing = 2.0 × 0.5m, the pepper variety Yangjiaojiao 1110 is selected, and the fertilizer application rate is 55kg / 667m 2 , pepper planting density (row spacing × plant spacing = 0.5 × 0.5m, 3-4 rows of peppers are planted in a watermelon bed 2.0-2.5m wide), early spring watermelon yield 1510kg / 667m 2 , economic benefits 7550 yuan / 667m 2 ; Early pepper yield exceeds 1240kg / 667m 2 , the economic benefit is 8680 yuan / 667m 2 Autumn watermelon production: 1140kg / 667m 2 , economic benefit 4500 yuan / 667m 2 ; Pepper production exceeds 1350kg / 667m 2 , the economic benefit is 12450 yuan / 667m 2 The total annual average per mu output value reached 33,180 yuan, and the net profit per mu was more than 20,000 yuan.

[0043] The embodiments described above are only preferred specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any simple changes or equivalent replacements of the technical solutions that can be obviously obtained by any technician familiar with the field within the technical scope disclosed in the present invention belong to the protection scope of the present invention.

Claims

1. A method for planting watermelon and pepper throughout the year, characterized in that: The specific steps include: Step 1, spring field management: fertilize watermelon and pepper at the same time when the vine is 45-50cm long, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2; fertilize watermelon and pepper at the same time during the fruit expansion period, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 13:2; after the first batch of watermelon is picked, topdress watermelon and pepper at the same time, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2; fertilize pepper only 3-4 days before each harvest, the fertilizer is composed of compound fertilizer and water-soluble fertilizer in a ratio of 3:2; drip irrigation must be carried out after each fertilization; Step 2: Autumn field management: Repeat the fertilization method in step 1; Before planting in spring and autumn, basal fertilizer should be applied first. After the basal fertilizer is applied, the land should be prepared. Specifically, 1-3 tons of decomposed farmyard manure or 100-150 kg of biological organic fertilizer should be applied per mu, and 35-38 kg of nitrogen, phosphorus and potassium compound fertilizer should be applied. Drip irrigation should be laid while the land is prepared in spring, and finally mulch film should be laid. In spring, three-layer covering technology is used, namely mulch film + small arch shed + plastic shed. After the land is prepared in autumn, small arch shed + plastic shed is used; After the spring crop is over, the greenhouse needs to be sealed. The specific method is: after the spring crop is cleared, farmyard manure is applied, then the ground film is covered, and finally a large amount of water is poured and the greenhouse is closed until the beginning of August; In the step 1, after the seedlings are transplanted and the seedlings are grown, 1% urea is first sprayed on the watermelons and peppers, with a urea dosage of 4-5 kg ​​per mu. At the same time, the amount of fertilizer applied in step 1 when the vines are 45-50 cm long, during the watermelon fruit swelling period, after the first batch of watermelons are picked, and 3-4 days before each harvest of the peppers is 4-5 kg ​​per mu, and drip irrigation is performed after each fertilization.

2. The method for planting watermelon and pepper throughout the year according to claim 1, characterized in that: When the greenhouse is sealed, the amount of farmyard manure used is 2000-3000kg per mu of land.

3. The method for planting watermelon and pepper throughout the year according to claim 1, characterized in that: When planting in spring, the row spacing of watermelon is 1.9-2m, the plant spacing is 0.4-0.5m, the row spacing of pepper is 0.4-0.5m, the plant spacing is 0.4-0.5m, and the plant spacing is 0.4-0.5m. 3-4 rows of peppers are planted between every two rows of watermelon. When planting in autumn, the row spacing and plant spacing of watermelon and pepper are the same as those in spring.

4. The method for planting watermelon and pepper throughout the year according to claim 1, characterized in that: Before transplanting in spring, seedlings should be raised first. When raising seedlings, the watermelon variety should be any one of Fengle 8424, Zaojia, and Texiaofeng. The pepper seeds should be line pepper, sheep horn pepper, screw pepper, or thin-skinned pepper. Before transplanting in autumn, seedlings should be raised first. When raising seedlings, the watermelon variety should be any one of Xiayang, Fengle No. 1, Zaojia 8424, and Zhengza No.

5. The pepper seeds should be line pepper or sheep horn pepper.

5. The method for planting watermelon and pepper throughout the year according to claim 4, characterized in that: When raising seedlings, first air the pepper seeds for 1-2 days, then soak the seeds in 50-55℃ warm water for 15-20 minutes, then continue to soak at room temperature for 4-12 hours, finally place the soaked seeds in a 28-30℃ constant temperature box for germination, rinse with warm water 1-2 times a day, 4-5 days later, when 70% of the seeds are white, they can be sown. When sowing, sow the white pepper or watermelon seeds in the plug tray and cover them with 1-2cm seedling medium, then cover them with a film to increase temperature and moisture retention. Remove the film in time after more than 50% of the pepper seeds have emerged, and remove the covering film in time when the watermelon cotyledons are unearthed.

6. The method for planting watermelon and pepper throughout the year according to claim 5, characterized in that: When laying drip irrigation, only the drip irrigation pipe is laid between two rows of peppers. At the same time, the water supply pipe is located at one end of the greenhouse and connected to the pressurized water source, and an independent control switch is provided between each drip irrigation pipe.