A growth regulator and planting method for improving yield of leek in saline-alkali soil

Abstract

The present application relates to a kind of growth regulators and planting methods that can improve the yield of leek in saline-alkali soil, which comprises the following steps: S1: selecting high-quality leek seeds;S2: warm soup soaking seeds to germinate;S3: plug seedling;S4: planting: when planting, leek planting density is 10 cm, row spacing 20-35 cm;S5: field water and fertilizer management: when leek plant growth to 10-20 cm, foliar spray 0.02% chlorophyllin iron, the concentration of the spray 0.02% chlorophyllin iron is diluted 2500X-5000X, while adding diluted 500X balanced foliar fertilizer.The planting method uses different concentrations of chlorophyllin iron and foliar fertilizer, with the corresponding leek planting density, significantly improves the growth traits and leek yield of leek in saline-alkali soil.This planting method is simple, green, economical, efficient, can be directly applied to leek production in saline-alkali soil and related fields of research, more efficient and environmentally friendly to ensure the healthy growth of crops, suitable for large-scale promotion of leek planting in saline-alkali soil in the future.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting technology, and in particular to a growth regulator that can increase the yield of leeks in saline-alkali land and its planting method. Background Technology

[0002] Saline soil, as a soil resource, is the core component of saline-alkali land resources. The efficient utilization of saline-alkali land for agriculture is of great significance for improving my country's arable land agricultural productivity and ensuring national food security.

[0003] Leeks, a vegetable unique to my country, are widely loved. Rich in fiber, carotenoids, vitamin C, soluble sugars, calcium, iron, zinc, and other nutrients, leeks are a highly nutritious vegetable. Regular consumption of leeks can effectively prevent cardiovascular disease, delay aging, and has antibacterial and blood sugar-lowering effects. Currently, the main problems in leek cultivation on saline-alkali land are weak growth and low yield, with local leek production unable to meet the demand from restaurants and individual consumers. Therefore, increasing leek production in saline-alkali land is crucial. However, to avoid the indiscriminate use of chemical fertilizers and pesticides in pursuit of high yields, we need to adopt a safe method to increase leek production in saline-alkali land and meet the local demand for safe, high-quality leeks. Currently, there is limited research on leek cultivation in saline-alkali land, and large-scale cultivation of leeks on saline-alkali land is not observed.

[0004] Planting density is a key factor affecting crop yield. It influences the competition for resources such as light, water, fertilizer, and air per unit area, thereby affecting the distribution of nutrients within the crop and ultimately its quality and yield. Numerous studies have shown that, under the combined influence of climate, cultivation practices, and soil conditions, different varieties of different crops require different planting densities in different regions, and even the optimal planting density for the same variety of crop varies from region to region. Therefore, finding the appropriate planting density is crucial for improving the yield and quality of leeks in saline-alkali land.

[0005] Plant growth regulators are synthetically produced compounds with structures and functions similar to natural plant hormones, capable of regulating plant metabolism and physiological processes, and have a wide range of applications. Common plant growth regulators mainly include auxins, cytokinins, gibberellins, abscisic acid derivatives, ethylene derivatives, and brassinolides, which play important roles in promoting seed germination, rooting and flowering, enhancing plant defense capabilities, and improving crop yield and quality. Among them, iron dihydroporphyrin is a novel plant growth regulator, with the ISO common name: iron chlorine e6. Iron dihydroporphyrin can inhibit chlorophyllase, delay chlorophyll degradation, and at the same time promote root growth and enhance plant stress resistance.

[0006] Therefore, a suitable planting scheme for chives in saline-alkali land is crucial for obtaining high-quality, safe, and high-yield chives under saline-alkali conditions. Related research is of great significance for promoting the efficient utilization of saline-alkali land in agriculture and contributing to the green development of the agricultural industry. Summary of the Invention

[0007] The present invention aims to solve the above problems and provides a plant growth regulator and planting method suitable for leek production in saline-alkali land. The method significantly increases the yield of leeks in saline-alkali land by planting at an appropriate leek density and applying 0.02% dihydroporphyrin iron and foliar fertilizer.

[0008] A growth regulator that can increase the yield of leeks in saline-alkali land, the active ingredient of which is iron dihydroporphyrin, the effective ingredient content of which is 0.02%; the dihydroporphyrin is used at a dilution ratio of 2500X to 5000X.

[0009] Furthermore, the application method is to spray the leaves when the leek plants grow to 10-20cm, with a dosage of 4-8mg per application.

[0010] A method for increasing the yield of chives in saline-alkali land includes the following steps:

[0011] S1: Select high-quality chive seeds;

[0012] S2: Soak seeds in warm water to promote germination;

[0013] S3: Seedling tray cultivation;

[0014] S4: Transplanting: When transplanting, the planting density of chives is 10cm between holes and 20-35cm between rows;

[0015] S5: Field water and fertilizer management: When the leek plants grow to about 10-20cm, spray the leaves with 0.02% dihydroporphyrin iron. The concentration of the 0.02% dihydroporphyrin iron spray is diluted to 2500X~5000X. At the same time, add a balanced foliar fertilizer diluted to 500X.

[0016] Furthermore, in step S1, high-quality chive seeds are selected, with a cleanliness of over 99%, pure color, no mold, purity of over 95%, germination rate of over 80%, and moisture content of less than 8.5%.

[0017] Furthermore, in the S2 warm water soaking and germination process, the seeds are washed with clean water; the chive seeds are then placed in warm water at 50-55℃ and soaked for 15-20 minutes at a constant temperature; after the water has cooled naturally, the seeds are sown into seedling trays for seedling cultivation.

[0018] Furthermore, for the S3 plug tray seedling cultivation, after the seedlings emerge, spray with a foliar fertilizer diluted 1000 times once every 10 days, and transplant the seedlings 1-2 months after the plug tray seedlings are raised.

[0019] Preferably, the planting density of S4 is 10cm between holes and 20-35cm between rows, and the concentration of 0.02% dihydroporphyrin iron spray is diluted 5000X.

[0020] Preferably, the planting density of S4 is 10cm between holes and 20-35cm between rows, and the concentration of 0.02% dihydroporphyrin iron spray is diluted 2500X.

[0021] Furthermore, the water consumption per acre for foliar spraying is 20 kg.

[0022] The present invention has the following advantages:

[0023] This invention provides a growth regulator and planting method to increase the yield of chives in saline-alkali land. The method uses different concentrations of dihydroporphyrin iron and foliar fertilizer in combination with corresponding planting densities to significantly improve the growth traits and yield of chives in saline-alkali land. This planting method is simple, green, economical, and efficient, and can be directly applied to chive production in saline-alkali land and related research. It more efficiently and environmentally protects the healthy growth of crops and is suitable for large-scale promotion of chive cultivation in saline-alkali land in the future. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0025] Figure 1 Example 1 of this invention: The effect of different concentrations of dihydroporphyrin iron treatment on leek yield;

[0026] Figure 2 Example 2 of this invention: The effect of different planting densities on leek yield. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Example 1: Effects of different concentrations of dihydroporphyrin iron on growth indicators and yield of leeks

[0029] 1.1 Experimental Materials

[0030] Chemicals: Dihydroporphyrin iron was purchased from Nanjing Baite Biotechnology Co., Ltd., with an effective ingredient content of 0.02%; the foliar fertilizer used was a balanced type 19-19-19 (Haifa Baolifeng No. 1 19-19-19); the leek variety was Dugenhong (planted at Dongying Qingnongda Saline-Alkali Land High-Efficiency Agricultural Technology Industry Research Institute).

[0031] 1.2 Measurement Indicators and Methods

[0032] Stem height: The height of the leek plant is recorded as the distance from the base of the plant to the point of maximum leaf length when it is growing upright.

[0033] Stem diameter: Measure the diameter of the pseudostem 1 cm from the base of the plant using vernier calipers;

[0034] Plant weight: The weight of the plant's base (within 1 cm).

[0035] Gross weight: The sum of the fresh weight of chives per square meter before removing the dry tips and yellow leaves;

[0036] Net weight: The sum of the fresh weight of chives per square meter after removing dried tips and yellow leaves;

[0037] 1.3 Planting

[0038] S1: Select high-quality chive seeds: Choose high-quality chive seeds with a cleanliness of over 99%, pure color, no mold, purity of over 95%, germination rate of over 80%, and moisture content of less than 8.5%.

[0039] S2: Soaking seeds in warm water to promote germination: Wash the seeds with clean water, place the cleaned leek seeds in warm water at 50-55℃, soak for 15-20 minutes at a constant temperature, and after the water cools down naturally, sow the seeds into seedling trays for seedling cultivation.

[0040] S3: Seedling tray raising; Seedlings are raised using the seedling tray raising method. 50-cell seedling trays (28cm×54cm) are used. After the seedlings emerge, spray with 1000 times diluted foliar fertilizer once every 10 days. After 1-2 months, transplant them to the field for planting according to the growth of the seedlings and the field climate.

[0041] S4: Planting: The planting density in this univariate experiment was 30cm row spacing and 10cm hole spacing, with 8-10 plants per hole.

[0042] S5: Field water and fertilizer management: At the time of transplanting, field fertilization should mainly use organic fertilizer, which is beneficial to improve soil conditions. Other management methods are the same as conventional management methods.

[0043] 1.4 Experimental Setup

[0044] The experiment was set up with 3 groups: control group (500X foliar fertilizer), 2500X group (500X foliar fertilizer + 2500X 0.02% dihydroporphyrin iron), and 5000X group (500X foliar fertilizer + 5000X 0.02% dihydroporphyrin iron). The planting density was 30cm between rows and 10cm between holes, with 8-10 plants per hole. Data were collected 30 days after foliar spraying treatment.

[0045] 1.5 Experimental Data Analysis

[0046] Table 1: Effects of different concentrations of 0.02% dihydroporphyrin iron plus foliar fertilizer on growth indicators of leeks

[0047]

[0048] The experimental data are shown in Table 1. Under the premise of fixed planting density, spraying with 0.02% dihydroporphyrin using either 2500X or 5000X increased the plant weight, plant height, and stem diameter of chives. Specifically, when sprayed with 2500X, the average plant weight was 4.83g, plant height was 40.66cm, and stem diameter was 0.19cm, representing a 73.1% increase in plant weight, a 13.65% increase in plant height, and a 36.5% increase in stem diameter compared to the control. When sprayed with 5000X, the average plant weight increased by 34.1%, plant height by 13.7%, and stem diameter by 23.1% compared to the control. Compared to the 5000X group, the chives sprayed with 2500X showed more robust growth and higher average plant weight, with the average plant weight in the 2500X group increasing by 29.14% compared to the 5000X group.

[0049] Experimental data such as Figure 1 As shown, spraying with ferrous dihydroporphyrin at different dilution ratios significantly improved the yield of chives. Specifically, spraying with ferrous dihydroporphyrin at a dilution of 2500 resulted in a gross weight of 1.7853 kg per square meter of chives, while spraying with ferrous dihydroporphyrin at a dilution of 5000 resulted in a gross weight of 1.692 kg per square meter of chives, representing increases of 42.1% and 34.6% respectively compared to the control group.

[0050] Based on the experimental data from Example 1, the 2500X and 5000X groups showed improvements in single plant weight, plant height, and stem diameter compared to the CK group, with a particularly significant increase in single plant weight. Agronomical indicators also indicated that the chives grew more vigorously. Furthermore, the 2500X group also showed a significant yield increase compared to the 5000X group. This demonstrates that spraying different concentrations of dihydroporphyrin iron significantly promotes chive growth, with the 2500X concentration showing the most significant effect.

[0051] Example 2: The effect of different planting densities on leek yield

[0052] 2.1 Experimental Setup

[0053] The experimental materials, seed selection, germination, and seedling raising were the same as in Example 1. The foliar spraying followed the conclusion of Example 1, group 2500X (500X foliar fertilizer + 2500X 0.02% dihydroporphyrin iron).

[0054] At planting, the spacing between holes was fixed at 10cm. Different planting densities were set by varying the row spacing, resulting in four treatments: row spacing of 20cm, 25cm, 30cm, and 35cm. Each treatment was replicated four times. The quadrat measured 1.5m × 15m, with an area of ​​22.5m². 2 .

[0055] 2.2 Measurement Indicators and Methods

[0056] Data were collected 30 days after foliar spraying, with each plot measuring 22.5 square meters. The gross weight of the chives was measured, and the theoretical yield per acre was calculated.

[0057] 2.3 Experimental Data Analysis

[0058] Experimental data such as Figure 2 As shown in Table 2, under saline-alkali soil conditions, the highest yield of chives was 39.475 kg when the planting density was 10 cm between plants and 30 cm between rows, with a theoretical yield of 1170.433 kg per mu (approximately 0.067 hectares). When the plant spacing remained constant, the yield decreased when the row spacing increased or decreased. The lowest yield was 32.5275 kg when the planting density was 10 cm between plants and 35 cm between rows, with a theoretical yield of 964.44 kg per mu (approximately 0.067 hectares). The theoretical yield per mu increased by 205.993 kg when the planting density was 30 cm between plants and 35 cm between rows, representing a weight gain of 21.36%.

[0059] Therefore, appropriate planting density can significantly increase the yield of chives in saline-alkali land. Reasonable planting density means achieving higher yields while using less germplasm resources, providing more working space for farming, and reducing the probability of disease. The optimal planting density is 10cm between holes and 30cm between rows, with 8-10 plants per hole, which can achieve higher yields and economic benefits under saline-alkali land cultivation conditions.

[0060] Table 2: Effects of different planting densities on chive yield

[0061]

[0062] The present invention has been described above by way of embodiments, but the present invention is not limited to the specific embodiments described above. Any modifications, variations and extensions made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A planting method for improving the yield of leek in saline-alkali soil, characterized in that, It comprises the following steps: S1: selecting high-quality leek seeds; S2: warm soup seed soaking and germination; S3: plug seedling, after germination, spraying 1 time every 10 days with 1000 times diluted foliar fertilizer, plug seedling for 1-2 months, and then planting; S4: planting: when planting, the leek planting density is 10 cm of hole distance, 30 cm of row distance, 8-10 plants per hole; S5: field water and fertilizer management: when the leek plant grows to about 10-20 cm, foliar spraying 0.02% chlorin e6, the spraying concentration of 0.02% chlorin e6 is 2500X dilution, and 500X dilution of balanced 19-19-19 foliar fertilizer is added; the foliar spraying water consumption per mu is 20 kg; the leek variety is 'Dugenghong'.

2. The planting method of claim 1, wherein the method is characterized by, The S1 selects high-quality leek seeds, and the high-quality leek seeds have the following characteristics: the cleanliness is higher than 99%, the color is pure, there is no mildew, the purity is higher than 95%, the germination rate is higher than 80%, and the moisture content is lower than 8.5%.

3. The planting method of claim 1, wherein the method is characterized by, The S2 warm soup seed soaking and germination, the seed is washed with clean water; the leek seed is taken out and soaked in warm water at 50-55 DEG C for 15-20 minutes; after the water is naturally cooled, the seed is sowed in the seedling tray for seedling.

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