Corn and pepper intercropping method capable of realizing grain and stalk synergy

Abstract

The invention discloses a corn and pepper intercropping method capable of realizing grain-stalk synergy, and belongs to the technical field of crop planting methods. The corn sowing time affects the growth accumulated temperature of corn and the resource competitive capacity of pepper, so that the final output value and benefit are affected. According to the method, by reasonably selecting the corn sowing time, reasonable distribution of resources among corn and pepper seeds can be effectively carried out, competition for water, fertilizer, light and heat resources during intercropping of corn and pepper is reduced, and the total output value of corn and pepper is increased. Meanwhile, by reasonably selecting the corn sowing period, investment can be reduced, output can be increased, and development and perfection of a corn and pepper intercropping mode are facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of crop planting methods, and more specifically relates to a method for realizing corn-pepper intercropping in coordination with grain and economy. Background Art

[0002] With the continuous improvement of living standards, a single planting method can no longer meet current needs and is prone to cause nutrient depletion of the land, resulting in problems such as weakened soil fertility. The year-round multi-cropping model is a win-win model for ensuring food security and increasing farmers' income. It effectively uses the principle of crop competition or promotion in intercropping, rationally allocates resources, improves productivity per unit area and time, and improves the effectiveness of available resources. However, in the intercropping model, it is necessary to make reasonable combinations based on ecological characteristics. In principle, it requires one tall and one short plant type, one deep and one shallow root system, and one light-loving and one shade-tolerant adaptability.

[0003] Scholars at home and abroad have carried out a lot of work on intercropping of corn and other crops, such as cereals / rice beans, corn / cowpeas, corn / soybeans, corn / wheat, potatoes / corn, corn / peanuts, etc. Reasonable crop matching and corn belt configuration can not only ensure the corn planting area and yield, but also increase the added value of each acre of land, thereby achieving the goal of ensuring grain production, increasing income and increasing efficiency.

[0004] If corn and pepper are intercropped, corn can provide shade for pepper, significantly reducing the sunburn and virus diseases caused by high temperature. However, the intercropping mode of corn and pepper in production is mainly pepper belt, with only one row of corn, which cannot guarantee the planting area and yield of corn. In addition, the competition for water, fertilizer, light and heat resources is obvious when corn and pepper are intercropped, which affects the yield of pepper and corn and cannot obtain higher economic benefits. Therefore, it is of great significance to develop a method of intercropping corn and pepper that can achieve grain-economy synergy. Summary of the invention

[0005] The purpose of the present invention is to provide a method for intercropping corn and pepper to achieve grain-economy synergy, so as to solve the problems existing in the above-mentioned prior art. The present invention significantly increases the output value of pepper and corn by selecting a suitable corn sowing period in the intercropping mode of corn and pepper.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] One of the technical solutions of the present invention is to provide a method for intercropping corn and pepper to achieve grain-economy synergy, comprising the following steps:

[0008] Determine the time for transplanting peppers and sowing corn: After the wheat harvest in early June, transplant peppers to the 60cm wide rows in the wheat field and sow corn at the same time;

[0009] Optimization of crop field layout: The row ratio of corn and pepper is 4:6; the row spacing of corn is 60cm, and the plant spacing is 12cm; peppers are planted alternately in wide and narrow rows, with a wide row spacing of 60cm, a narrow row spacing of 30cm, and a plant spacing of 15cm;

[0010] Reasonable field management: two rows of corn and four rows of peppers are called a group, each group includes a pepper belt and a corn belt; separate water and fertilizer management for pepper belts and corn belts; water and fertilizer management for pepper belts includes: irrigation volume during the whole growth period of pepper is 250-320m 3 / 667m 2 , and apply biological fertilizer and pure potassium sulfate compound fertilizer throughout the growth period of peppers; water and fertilizer management of corn belts includes: in the early stage of corn growth, water and fertilizer management is mainly based on the pepper belt, and the corn belt is managed together, and compound fertilizer is applied after jointing and before heading;

[0011] Other field management: including timely suppression, seedling replacement and thinning of corn after sowing; timely watering and seedling protection after transplanting peppers; paying attention to strengthening field management in the later stage, timely weeding, and prevention and control of diseases and pests.

[0012] Preferably, the method further comprises selecting improved varieties: the corn variety is "Golden Grain MY73" and the pepper variety is "Pepper Yu 18".

[0013] Preferably, the spacing between the corn belt and the pepper belt is 85 cm.

[0014] Preferably, the application amount of the biological fertilizer is 40kg / 667m 2 .

[0015] Preferably, the application amount of the pure potassium sulfate compound fertilizer is 75kg / 667m 2 The mass percentages of N, P2O5 and K2O in the pure potassium sulfate compound fertilizer are 15%, 15% and 15% respectively.

[0016] Preferably, the water and fertilizer management of the pepper belt also includes: spraying 0.4wt% potassium dihydrogen phosphate aqueous solution in the late growth stage of the pepper to promote flowering and fruiting.

[0017] Preferably, the compound fertilizer applied during water and fertilizer management in the corn belt is Algae Giant Energy Compound Fertilizer 27-7-5.

[0018] The corn sowing date affects the growth accumulated temperature of corn and the resource competition ability of pepper, thereby affecting the final output value and benefits. The present invention can effectively distribute resources between corn and pepper by reasonably selecting the corn sowing date, reduce the competition for water, fertilizer, light and heat resources during intercropping of corn and pepper, and improve the total output value of corn and pepper. At the same time, by reasonably selecting the corn sowing date, the input can be reduced and the output can be increased, which is conducive to the development and improvement of the corn and pepper intercropping mode.

[0019] The present invention discloses the following technical effects:

[0020] 1. The present invention analyzes the growth traits, yield traits of corn and pepper under different corn sowing periods and the comprehensive annual economic benefits of wheat, corn and pepper, and explores the appropriate corn sowing period in the corn-pepper intercropping mode, in order to provide a theoretical basis and technical support for the development of year-round multiple cropping system.

[0021] 2. Corn sowing date affects the growth temperature accumulation of corn and the resource competitiveness of pepper, thus affecting the final output value and benefits. The method of the present invention can effectively carry out the reasonable allocation of resources between corn and pepper species, while reducing investment, which is conducive to the development and improvement of corn and pepper intercropping mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the meteorological data of Xuchang City, Henan Province from May to September 2024;

[0023] Figure 2 It is the planting pattern diagram of the present invention;

[0024] Figure 3 The results of the effects of different corn sowing dates on corn plant height and dry matter mass at different growth stages are shown in Figure 1, where A is the effect on corn plant height and B is the effect on corn dry matter mass.

[0025] Figure 4 The results of the effects of different corn sowing dates on the agronomic traits of peppers, where A is the effect on pepper plant height, and B is the effect on pepper stem thickness;

[0026] Figure 5 The results are as follows: the effects of different corn sowing dates on the dry matter of peppers at different growth stages;

[0027] Figure 6 The results of the effects of different corn sowing dates on the photosynthetic characteristics of corn, among which A is the effect on the relative content of chlorophyll, B is the effect on the photosynthetic potential, and C is the effect on the net assimilation rate of the population;

[0028] Figure 7 These are the effects of different corn sowing periods on the output values ​​of corn and pepper, where A is the effect on corn output value, and B is the effect on pepper output value. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0030] It should be understood that the terms described in the present invention are only for describing a particular embodiment and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. The intermediate value in any stated value or stated range, and each smaller range between any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0031] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0032] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present invention description and examples are exemplary only.

[0033] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0034] The crop varieties and fertilizers used in the embodiments of the present invention are described below:

[0035] The corn variety “Golden Grain MY73” was purchased from Henan Pengchuang Agricultural Technology Co., Ltd.

[0036] The pepper variety “Jiaoyu 18” was purchased from Henan Qingyu Agricultural Technology Co., Ltd.

[0037] Biological fertilizer was purchased from Henan Beidouxing Biotechnology Co., Ltd.

[0038] Pure potassium sulfate compound fertilizer was purchased from Henan Supply and Marketing Cooperative E-Commerce Co., Ltd.; the mass percentages of N, P2O5 and K2O in the pure potassium sulfate compound fertilizer were 15%, 15% and 15%, respectively.

[0039] Potassium dihydrogen phosphate was purchased from Henan Beidafeng Biotechnology Co., Ltd.

[0040] Compound fertilizer was purchased from Hubei Haost Agricultural Technology Co., Ltd.

[0041] The seedling raising steps of the pepper of the present invention are specifically as follows: using a 128-hole plug tray substrate to raise seedlings, disinfecting the reusable plug tray with 0.3wt% potassium permanganate, and placing it on a tray after drying. Sunning the pepper seeds before sowing, and the coated seeds and pelletized seeds can be sown directly. Press a sowing hole with a depth of about 1cm in the middle of the hole, sow a single seed, cover the substrate or vermiculite after sowing, put it in a seedling raising shed, water it in time, cover it with mulch film, and remove the mulch film in time when 60% of the seeds break through the soil. Keep the moisture content of the substrate at 50-60%. Spray 0.1wt% urea and potassium dihydrogen phosphate 2-3 times according to the seedling conditions. When the seedlings are short of water, water can be appropriately supplemented in the morning on a sunny day.

[0042] Example 1

[0043] Verify the effects of different corn sowing dates on the growth of corn and peppers:

[0044] Site selection: The test was conducted from May to October 2024 in Maiyu Technology Courtyard, Jian'an District, Xuchang City, Henan Province (34°0'58.187"N, 113°39'39.992"E). The area belongs to the warm temperate monsoon climate zone, with an average altitude of 70m, an average annual temperature of 12.9℃, an average annual sunshine duration of 2180h, an average annual rainfall of 750mm, and a sunshine rate of about 50%. The meteorological data of the area from May to September 2024 are as follows: Figure 1 The soil type of the test site is fluvo-aquic soil, with the organic matter content of the 0-20 cm tillage layer being 16.61 g / kg, the total nitrogen content being 1.25 g / kg, the ammonium nitrogen content being 4.26 mg / kg, the nitrate nitrogen content being 7.55 mg / kg, the available phosphorus content being 6.73 mg / kg, and the available potassium content being 81.24 mg / kg.

[0045] Experimental Design:

[0046] Variety selection: The corn variety for the test is "Huangjinliang MY73" and the pepper variety for the test is "Jiaoyu 18".

[0047] Determine the time of transplanting pepper and sowing corn: In this experiment, pepper was transplanted in a 60 cm wide row of wheat (reserved when wheat was sown). The transplanting period was May 1, which was the grain filling period of wheat (wheat was harvested on June 1). The pepper started flowering on July 8, bloomed on July 18, bore fruit on August 1, and matured on September 25. The corn intercropped with pepper was divided into three sowing periods: T1 (May 6, sown in the wheat row), T2 (May 24, sown in the wheat row), and T3 (June 4, sown after wheat harvest).

[0048] The ratio of corn to pepper rows is 2:4 (e.g. Figure 2 As shown), the row spacing of corn is 60cm and the plant spacing is 12cm; peppers are planted alternately in wide and narrow rows, with row spacing of 30cm-60cm-30cm and plant spacing of 15cm.

[0049] Optimization of crop field layout: Two rows of corn and four rows of peppers are called a group, and each group includes a pepper belt and a corn belt; the distance between the pepper belt and the corn belt is 60cm. Water and fertilizer management methods are divided into pepper belts and corn belts. The irrigation method is to lay drip irrigation pipes in the corn belt and pepper belt. The irrigation volume of peppers during the whole growth period is 300m 3 / 667m 2 During the whole growth period of pepper, every 667m 2 Apply 40kg of biological fertilizer and 75kg of pure potassium sulfate compound fertilizer. In the late growth period of pepper, in order to promote flowering and fruiting, spray 0.4wt% potassium dihydrogen phosphate aqueous solution. Corn has a strong root system, and water and fertilizer management is mainly based on peppers. Manage them together, and apply compound fertilizer after jointing and before heading.

[0050] Other field management: including timely suppression, seedling replacement and thinning of corn after sowing; timely watering and seedling protection after pepper transplanting; focus on strengthening field management in the later stage, timely weeding, and prevention and control of pests and diseases. The rest of the field management measures are consistent with the local conventional high-yield field management measures.

[0051] The experimental plot area is 90m 2 , repeated 3 times. The growth stages of corn under different sowing dates are shown in Table 1.

[0052] Table 1 Growth stages of corn at different sowing times

[0053]

[0054]

[0055] Index determination and results:

[0056] The results of the following indicators were processed using Microsoft Excel 2021; data analysis was performed using SPSS25.0 software, and variance analysis and multiple comparisons (α=0.05) were performed using one-way ANOVA and Duncan's method; and graphics were drawn using Origin 2021 software.

[0057] 1. Agronomic traits:

[0058] The plant height was measured during the corn trumpeting stage and flowering and silking stage, and the dry matter of different organs such as roots, stems, leaves, sheaths, and ears were measured during the flowering and silking stage and the maturity stage. When sampling peppers, samples were taken from the side rows (adjacent to corn) and the two middle rows. The plant height and stem diameter were measured during the flowering stage, and the dry matter was measured in the aboveground part, underground part, and pepper fruit during the flowering and maturity stages.

[0059] The dry matter mass was determined by the following method: corn and pepper plants were sterilized at 105°C for 30 minutes, dried at 75°C until the mass was constant, and the dry matter mass was determined. Four plants with good growth, consistent growth and representativeness were selected from each plot, and each treatment was repeated three times. Figures 3 to 5 shown.

[0060] Figure 3 The results of the effects of different corn sowing dates on corn plant height and dry matter mass at different growth stages are shown in Figure 1, where A is the effect on corn plant height and B is the effect on corn dry matter mass. Figure 4 The results of the effects of different corn sowing dates on the agronomic traits of peppers, where A is the effect on pepper plant height, and B is the effect on pepper stem thickness; Figure 5 This is a graph showing the effect of different corn sowing dates on the dry matter content of peppers at different growth stages.

[0061] Depend on Figure 3 It can be seen that the plant height and dry matter weight of different corn sowing dates in different growth stages have the same trend, and as the corn sowing date is delayed, the dry matter weight of corn increases. The plant height under different corn sowing date treatments is different in different growth stages (see Figure 3 A), and all showed a trend of T2>T3>T1. T2 increased by 33.21% and 23.55% in the two growth periods compared with T1, and increased by 7.17% and 3.94% compared with T3. The dry matter weight of maize per plant under T3 was higher than that of T1 and T2 in both flowering and silking stages, and increased by 15.66% and 9.01% in flowering and silking stages (see Figure 3 B), but there was no significant difference among the treatments; at maturity, they increased significantly by 12.52% and 10.11%, respectively, and there was no significant difference between T1 and T2 treatments. The change in ear dry matter weight affected the subsequent yield change trend.

[0062] Depend on Figure 4 and Figure 5 It can be seen that under the T2 treatment, the plant height of peppers in the edge rows and the middle rows decreased (see Figure 4 A), compared with T1, the plant height of peppers in the middle row and side row decreased by 3.40% and 5.91%, respectively. Compared with T3, there was no significant difference in the middle row, and the side row decreased by 3.58%. However, the stem thickness of peppers under T2 treatment was better (see Figure 4 B), which increased significantly by 12.82% and 11.54% respectively compared with T3. The dry matter weight of peppers in the middle and side rows showed the same trend during the flowering and fruiting period (see Figure 5), the dry matter mass of peppers in the middle row of T1 increased by 32.24% and 38.35% compared with T2 and T3, respectively, and the dry matter mass of peppers in the side row increased by 7.11% and 28.66%, respectively. There was no significant difference in the biomass of peppers in the middle row during maturity, but there was a significant difference in peppers in the side row, and it was the lowest under T2 treatment, among which the dry matter mass of pepper fruits per plant decreased by 54.57% and 37.72%, respectively, which is an important part affecting the yield trend and final yield formation.

[0063] 2. Corn photosynthesis index:

[0064] The relative chlorophyll content of corn was measured during the flowering period. The photosynthetic potential (LAD) of corn was calculated by the interval time during the growth period of corn and the leaf area measured during the corresponding growth period. The calculation method is as follows: photosynthetic potential (LAD) = (L2-L1) × (T2-T1), where L is the leaf area / m 2 , T is time / d.

[0065] The net assimilation rate (NAR) of a population can be calculated by biomass, leaf area and growth period. The calculation method is as follows: Net assimilation rate (NAR) of a population = (W2-W1) / (S2-S1) / (T2-T1), where W is dry matter / g and S is leaf area / m 2 , T is time / d.

[0066] The results are as follows Figure 6 shown.

[0067] Figure 6 The results of the effects of different corn sowing periods on the photosynthetic characteristics of corn, among which A is the effect on the relative content of chlorophyll, B is the effect on photosynthetic potential, and C is the effect on the net assimilation rate of the population.

[0068] Depend on Figure 6 It can be seen that the relative chlorophyll content of T3 increased significantly by 8.42% compared with T2, and had no significant difference with T1 (see Figure 6 A). The photosynthetic potential of T3 increased significantly by 50.62% and 26.81% compared with T1 and T2, respectively, but there was no significant difference between T1 and T2 treatments (see Figure 6 B). The net assimilation rate of corn populations is consistent with the trend of photosynthetic potential, both showing an increase with the delay of corn sowing date (see Figure 6 C), T3 treatment significantly increased by 48.22% and 28.79% compared with T1 and T2, and there was no significant difference between T1 and T2. That is, early sowing is not conducive to photosynthesis and the accumulation and conversion of dry matter, thus affecting subsequent yields.

[0069] 3. Output:

[0070] During the maturity period of corn, ears were selected from two rows of five meters in the plot, and they were threshed and weighed after drying. Among them, 10 ears were randomly selected to investigate the number of rows, number of grains per row, 100-grain weight and grain moisture content, and the theoretical yield was calculated. During the maturity period of pepper, three rows of two meters were selected in the plot to determine the number of branches, number of fruits per plant, and weight of single fruit. Each treatment was repeated 3 times for corn and pepper yield measurement. The results are shown in Tables 2 and 3.

[0071] Table 2 Effects of different corn sowing dates on corn yield and its components

[0072] Corn planting time Number of ear rows Number of rows 100-grain weight / g Yield / kg / mu T1 <![CDATA[15.3 c ]]> <![CDATA[38.3 a ]]> <![CDATA[31.6 a ]]> <![CDATA[564.1 b ]]> T2 <![CDATA[16.6 b ]]> <![CDATA[37.8 a ]]> <![CDATA[32.1 a ]]> <![CDATA[584.8 b ]]> T3 <![CDATA[19.0 a ]]> <![CDATA[35.7 a ]]> <![CDATA[32.5 a ]]> <![CDATA[641.4 a ]]>

[0073] Table 3 Effects of different corn sowing dates on pepper yield and its components

[0074]

[0075] As shown in Table 2, the number of ear rows showed an increasing trend with the delay of sowing date, and T3 increased significantly by 26.67% and 11.76% compared with T2 and T1, respectively. However, there was no obvious difference in the number of grains per row and the 100-grain weight. Therefore, early sowing date was not conducive to the formation of corn yield. The yield showed an increasing trend with the delay of sowing date, and T3 increased by 13.70% and 9.68% compared with T1 and T2, respectively. However, the difference between T1 and T2 treatments was not significant.

[0076] As shown in Table 3, at T3, the number of pepper branches was the least, which was significantly reduced by 14.53% and 25.00% compared with T1 and T2, respectively. The number of fruits per plant was the least in the T2 treatment, which was significantly reduced by 39.39% compared with T1 and 30.30% compared with T3, but the difference was not significant. The average single fruit weight of pepper increased with the delay of corn sowing date, but the difference among the three treatments was not significant. The pepper yield in the T1 treatment was the highest, which was 1211.7 kg / mu; the pepper yield in the T2 treatment was the lowest, which was 931.5 kg / mu. Compared with T2 and T3, the yield of the T1 treatment increased by 20.42% and 7.70%, respectively. Compared with the T2 and T3 treatments, the number of fruits per plant in the T1 side row increased by 67.56% and 51.34%, and the single fruit weight in the side row increased by 12.82% and 7.31%.

[0077] 4. Economic benefit analysis:

[0078] The economic output value is the product of crop yield and unit price. In 2024, the unit price of wheat in Jian'an District, Xuchang City is 2.4 yuan / kg, the unit price of corn is 1.8 yuan / kg, and the unit price of pepper (after drying) is 18 yuan / kg. Net income per mu = wheat output value + corn output value + pepper output value - total input. The input includes labor and mechanical inputs such as sowing of crops in each season, management of water, fertilizer, pests and weeds, and harvesting; the cost of agricultural materials such as seeds, fertilizers, pesticides, and land rent. The results are as follows: Figure 7 And as shown in Table 4.

[0079] Table 4 Effects of different corn sowing dates on the economic benefits of intercropping corn and pepper

[0080]

[0081] Figure 7 These are the effects of different corn sowing periods on the output values ​​of corn and pepper, where A is the effect on corn output value, and B is the effect on pepper output value.

[0082] Depend on Figure 7 As shown in Table 4, in the intercropping system of corn and pepper, the annual economic benefits of wheat, corn and pepper changed accordingly when corn was sown at different times. The T3 treatment was sown after wheat stubble, and the wheat output value increased by 11.40% and 12.44% compared with T1 and T2. As the corn sowing date was delayed, the per-acre output value of corn increased (see Figure 7 A), corn yield was the highest in T3 treatment, increasing by 13.71% and 9.68% compared with T1 and T2, respectively, but the difference was not significant. Pepper yield was the highest in T1 treatment and the lowest in T2 treatment (see Figure 7 B), which was significantly reduced by 67.20% and 61.01% compared with T1 and T3, respectively, but the difference between T1 and T3 treatments was not significant. In the corn-pepper intercropping mode, the annual net income of different corn sowing periods was T3>T1>T2 (see Table 4). After deducting the cost, the income of T1 and T3 was still considerable, 3853.64 yuan / mu and 4257.48 yuan / mu, respectively. The final net income of T2 treatment was lower due to the lower output value of pepper. However, in the annual wheat-corn planting mode, the net income of wheat in one season was 500 yuan / mu, and the net income of corn in one season was 400 yuan / mu. The net income of each treatment in this mode increased significantly by 328.18%, 120.52%, and 373.05% respectively compared with the wheat-corn planting mode. Therefore, considering the output value and annual net income of wheat, corn and pepper, the economic benefits of each treatment were higher than the wheat-corn monoculture mode, and in this mode, T3 treatment was the most suitable.

[0083] Example 2

[0084] Verify the effects of different corn and pepper row ratio configurations on corn and pepper yields and economic benefits:

[0085] The difference from Example 1 is that the corn sowing period is T3 (June 4, sowing after wheat harvest), the row ratio of corn to pepper is adjusted to 3:4 and 4:6, and the rest is the same as Example 1.

[0086] The yield of the test described in this example was analyzed, and the results are shown in Table 5.

[0087] Table 5 Effects of different maize and pepper row ratios on maize and pepper yields

[0088] chili 3:4 Mode 2:4 Mode 4:6 Mode Yield / kg / mu 1132.840828 1262.773610 1298.648560 corn 2:4 Mode 3:4 Mode 4:6 Mode Yield / kg / mu 641.4 729.6 673.7

[0089] The economic benefits of the experiment described in this example were analyzed, and the results are shown in Table 6.

[0090] Table 6 Effects of different maize and pepper row ratios on the economic benefits of intercropping of maize and pepper

[0091]

[0092] Example 3

[0093] Verify the effect of different pepper and corn belt spacing on corn and pepper yields and economic benefits:

[0094] The difference from Example 1 is that the ratio of corn to pepper rows is 4:6, the corn sowing period is T3 (June 4, sowing after wheat harvest), the pepper transplanting period is June 4, the spacing between the pepper belt and the corn belt is adjusted to 110 cm, 85 cm and 60 cm respectively, and the rest is the same as Example 1.

[0095] The yield of the test described in this example was analyzed and the results are shown in Table 7.

[0096] Table 7 Effects of different spacings between pepper and corn belts on corn and pepper yields

[0097] chili 4:6 Mode corn 4:6 Mode 1 1211.919525 1 584.2 2 1218.685248 2 610.3 3 887.3540598 3 630.3

[0098] In Table 7, “1, 2, 3” represent the spacings between the corn belt and the pepper belt as “110 cm, 85 cm, 60 cm” respectively.

[0099] The economic benefits of the experiment described in this example were analyzed, and the results are shown in Table 8.

[0100] Table 8 Effects of different spacings between pepper belts and corn belts on the economic benefits of intercropping of corn and pepper

[0101]

[0102] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0103] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for intercropping corn and pepper to achieve grain-economy synergy, characterized in that: The steps include: Determine the time for transplanting peppers and sowing corn: After the wheat harvest in early June, transplant peppers to the 60cm wide rows in the wheat field and sow corn at the same time; Optimization of crop field layout: The row ratio of corn and pepper is 4:6; the row spacing of corn is 60cm, and the plant spacing is 12cm; peppers are planted alternately in wide and narrow rows, with a wide row spacing of 60cm, a narrow row spacing of 30cm, and a plant spacing of 15cm; Reasonable field management: two rows of corn and four rows of peppers next to each other are called a group, and each group includes a pepper belt and a corn belt; The pepper belt and corn belt are managed separately for water and fertilizer. The pepper belt water and fertilizer management includes: the irrigation amount during the whole growth period of pepper is 250-320m 3 / 667m 2 , and apply biological fertilizer and pure potassium sulfate compound fertilizer throughout the growth period of peppers; water and fertilizer management of corn belts includes: in the early stage of corn growth, water and fertilizer management is mainly based on the pepper belt, and the corn belt is managed together, and compound fertilizer is applied after jointing and before heading; Other field management: including timely suppression, seedling replacement and thinning of corn after sowing; timely watering and seedling protection after transplanting peppers; paying attention to strengthening field management in the later stage, timely weeding, and prevention and control of diseases and pests.

2. The method for intercropping corn and pepper to achieve grain-economy synergy according to claim 1, characterized in that: The method also includes improved variety selection: the corn variety is "Golden Grain MY73" and the pepper variety is "Pepper Yu 18".

3. The method for achieving corn-pepper intercropping with grain and economy synergy according to claim 1, characterized in that: The distance between the corn belt and the pepper belt is 85 cm.

4. The method for achieving corn-pepper intercropping with grain and economy synergy according to claim 1, characterized in that: The application amount of the biological fertilizer is 40kg / 667m 2 .

5. The method for achieving corn-pepper intercropping with grain and economy synergy according to claim 1, characterized in that: The application amount of the pure potassium sulfate compound fertilizer is 75kg / 667m 2 The mass percentages of N, P2O5 and K2O in the pure potassium sulfate compound fertilizer are 15%, 15% and 15% respectively.

6. The method for achieving corn-pepper intercropping with grain and economy synergy according to claim 1, characterized in that: The water and fertilizer management of the pepper belt also includes: spraying 0.4wt% potassium dihydrogen phosphate aqueous solution in the late growth period of the pepper.

7. The method for intercropping corn and pepper to achieve grain-economy synergy according to claim 1, characterized in that: The compound fertilizer applied during water and fertilizer management in the corn belt is Algae Giant Energy Compound Fertilizer 27-7-5.

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