A foliar fertilizer with corn growth-controlling effect and a preparation method and application thereof

Abstract

The present application relates to the technical field of fertilizer, in particular to a foliar fertilizer with corn growth control effect and a preparation method and application thereof. The foliar fertilizer with corn growth control effect comprises, by mass fraction: ferrous sulfate 1-2 parts, zinc sulfate 1-2 parts, magnesium sulfate 1-2 parts, sodium selenite 0.2-0.4 parts, alginic acid 0.5-0.8 parts, marigold extract 0.5-1 part and boric acid 0.2-0.4 part. The foliar fertilizer with corn growth control effect has simple raw material composition, the raw materials are easy to obtain, the cost is low, and it is easy to be accepted by the majority of planters. When the corn grows to 7-8 leaves, spraying the foliar fertilizer with corn growth control effect can shorten the internode length at the base of the corn stem, increase the thickness, strength and toughness of the straw, increase the number of layers and strips of the "king root", reduce the risk of lodging, reduce the ear height, and can avoid the problems of too short corn plants, poor growth or inhibited female ear development.

Description

Technical Field

[0001] This invention relates to the field of fertilizer technology, and in particular to a foliar fertilizer with the effect of controlling excessive growth in corn, its preparation method and application. Background Technology

[0002] Corn is an important food crop, and together with rice and wheat, it is known as one of the world's three major crops. During the corn planting process, excessive sunlight, excessive soil fertility, or excessive water may cause corn to grow too vigorously. Excessive corn growth may have the following harms: (1) Increased risk of lodging: Overly vigorous corn plants often have thinner stems and underdeveloped root systems, which significantly increases the probability of lodging when encountering strong winds and heavy rains; lodging not only affects the normal growth of corn, but may also cause serious yield losses. (2) Increased risk of pests and diseases: Overly vigorous corn may affect the absorption, consumption, and transport of water and nutrients, weakening the plant's own resistance and thus increasing the risk of pests and diseases; at the same time, overly vigorous corn plants may also increase the occurrence of empty stalks and barren tips. (3) Insufficient nutrition: Overly vigorous corn will consume too much nutrition, leading to insufficient nutrition in the middle and late stages, which in turn affects the development and grain filling of the ears, making the ears smaller and the grain filling insufficient, seriously affecting the yield and quality of corn. (4) Delayed flowering and maturity: Excessive growth of corn may delay flowering, which in turn delays the maturity of corn and prolongs the growth cycle. This not only increases the difficulty of management and harvesting, but may also lead to harvest delays due to factors such as weather changes or labor shortages.

[0003] Therefore, appropriate control measures need to be taken to address the problem of excessive growth in corn, in order to maintain normal growth and improve corn yield and quality. Summary of the Invention

[0004] Based on the above, this invention provides a foliar fertilizer with a corn growth-regulating effect, its preparation method, and its application. By spraying this foliar fertilizer with corn growth-regulating effect at specific times, the problem of excessive corn growth can be effectively controlled, thereby improving corn yield and quality.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] One of the technical solutions of this invention is a foliar fertilizer with the effect of controlling excessive growth in corn, comprising, by weight, the following raw materials:

[0007] 1-2 parts ferrous sulfate, 1-2 parts zinc sulfate, 1-2 parts magnesium sulfate, 0.2-0.4 parts sodium selenite, 0.5-0.8 parts alginic acid, 0.5-1 parts marigold extract, and 0.2-0.4 parts boric acid.

[0008] The second technical solution of the present invention is a method for preparing the above-mentioned foliar fertilizer with corn growth control effect, comprising the following steps: mixing the raw materials evenly according to the mass fractions, and then diluting them with water by 800-1000 times to obtain the foliar fertilizer with corn growth control effect.

[0009] The third technical solution of this invention is the application of the above-mentioned foliar fertilizer with the effect of controlling excessive growth in corn in corn planting.

[0010] The fourth technical solution of this invention is a method to improve corn yield and quality by spraying the above-mentioned foliar fertilizer that has the effect of controlling corn growth when the corn has grown to 7-8 leaves.

[0011] The present invention discloses the following technical effects:

[0012] The foliar fertilizer of this invention, which has the effect of controlling excessive growth in corn, has a simple composition of raw materials, is easy to obtain, has low cost, and is easily accepted by the majority of growers.

[0013] When corn has grown to 7-8 leaves, spraying the foliar fertilizer of this invention, which has the effect of controlling corn growth, can shorten the internode length at the base of the corn stalk, increase the thickness, strength and toughness of the stalk, increase the number of layers and strands of "dominant roots", reduce the risk of lodging, lower the ear height, and avoid the problems of corn plants being too short, not growing vigorously or having suppressed female ear development.

[0014] Spraying the foliar fertilizer of this invention, which has the effect of controlling excessive growth in corn, can increase the number of aerial roots at the base of corn, thereby improving its resistance to drought, waterlogging, and disease, and ultimately achieving the goal of increasing corn yield.

[0015] This invention provides a foliar fertilizer for controlling excessive growth in corn. Containing various trace elements, it can be rapidly converted into usable nutrients when sprayed directly onto corn leaves, thus improving the corn's nutrient absorption efficiency. Furthermore, by adding marigold extract to the foliar fertilizer, this invention effectively enhances the quality of the corn. Detailed Implementation

[0016] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0017] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Any stated value or intermediate value within a stated range, as well as each smaller range between any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0018] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0019] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be apparent to those skilled in the art. This specification and embodiments are merely exemplary.

[0020] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0021] The first aspect of this invention provides a foliar fertilizer with a corn growth-regulating effect, comprising, by weight, the following raw materials:

[0022] 1-2 parts ferrous sulfate, 1-2 parts zinc sulfate, 1-2 parts magnesium sulfate, 0.2-0.4 parts sodium selenite, 0.5-0.8 parts alginic acid, 0.5-1 parts marigold extract, and 0.2-0.4 parts boric acid.

[0023] Corn is one of the most zinc-sensitive field crops. Zinc is a component of many enzymes in corn and participates in a series of physiological processes. Alcohol dehydrogenase requires zinc for activation during anaerobic respiration, therefore, sufficient zinc plays a role in corn's resistance to waterlogging. Zinc participates in the formation of auxin in corn; supplementing with appropriate amounts of zinc can accelerate corn growth, shortening the corn growing cycle while ensuring yield.

[0024] Ferrous sulfate, magnesium sulfate, sodium selenite, and boric acid in foliar fertilizers can provide corn with the trace elements such as iron, zinc, selenium, and boron needed during its growth, promoting corn growth and thus improving corn yield and quality.

[0025] Alginic acid can promote the growth and development of corn roots, enhance corn photosynthesis, and thus increase corn yield.

[0026] An appropriate amount of marigold extract can effectively balance excessive growth and vegetative growth in corn. While controlling excessive growth, it ensures the corn's vegetative growth, improves the corn's absorption of nutrients, and thus improves the quality of the corn.

[0027] In this invention, if the amount of marigold extract added is too small, the effect of controlling excessive growth and improving corn quality will not be obvious; if the amount of marigold extract added is too large, the effect of controlling excessive growth and improving corn quality will not be obvious. Therefore, considering the overall effect and cost, this invention limits the amount of marigold extract added to the range of parameters mentioned above.

[0028] In some embodiments of the present invention, the marigold extract is an alcoholic extract of marigold flowers.

[0029] In some embodiments of the present invention, the method for preparing the marigold extract includes the following steps:

[0030] The marigold flowers were crushed and added to an ethanol-water solution for ultrasonic extraction. The resulting solution was filtered and concentrated under reduced pressure to obtain the marigold extract.

[0031] In some embodiments of the present invention, the mass-to-volume ratio of the marigold flower to the ethanol aqueous solution is 1 g: 1-2 mL; the volume concentration of the ethanol aqueous solution is 75%-90%.

[0032] In some embodiments of the present invention, the ultrasonic extraction power is 200-500W and the time is 10-15min.

[0033] In some embodiments of the present invention, the vacuum concentration is reduced to 1 / 3 to 1 / 2 of the original volume.

[0034] The second aspect of the present invention provides a method for preparing the above-mentioned foliar fertilizer with corn growth control effect, comprising the following steps: mixing the raw materials evenly according to the mass fractions, and then diluting them with water by 800-1000 times to obtain the foliar fertilizer with corn growth control effect.

[0035] The third aspect of this invention provides the application of the above-mentioned foliar fertilizer with the effect of controlling excessive growth in corn in corn planting.

[0036] The fourth aspect of this invention provides a method for improving corn yield and quality by spraying the above-mentioned foliar fertilizer with the corn growth control effect when the corn has grown to 7-8 leaves.

[0037] The timing of applying the foliar fertilizer of this invention, which has the effect of controlling excessive growth in corn, should not be too early or too late. Applying it too early will result in weak corn stalks and excessively short stems; applying it too late will result in abnormal internode shortening and abnormal tassel differentiation, thus affecting the growth and yield of corn. Applying the foliar fertilizer of this invention, which has the effect of controlling excessive growth in corn, at the small trumpet stage of corn, that is, when the corn has grown 7-8 leaves, can avoid the problems of excessively short corn plants, weak growth, or suppressed female ear development. At the same time, it can shorten the internode length at the base of the corn stem, increase the thickness, strength and toughness of the stalk, increase the number and layers of "dominant roots", reduce the risk of lodging, lower the ear height, and ultimately achieve the effect of increasing yield and improving quality.

[0038] Unless otherwise specified, all raw materials used in the embodiments of this invention can be obtained through commercial channels.

[0039] The marigold extract used in this embodiment of the invention is prepared through the following steps:

[0040] After crushing the marigold flowers, they were added to a 75% ethanol aqueous solution and ultrasonically extracted at 350W for 10 minutes. The mass-to-volume ratio of marigold flowers to ethanol aqueous solution was 1g:1mL. The filtered solution was concentrated under reduced pressure to half of its original volume to obtain marigold extract.

[0041] The present invention will be further illustrated by the following examples.

[0042] Example 1

[0043] A foliar fertilizer for controlling excessive growth in corn is composed of 1.5 parts ferrous sulfate, 2 parts zinc sulfate, 1.2 parts magnesium sulfate, 0.3 parts sodium selenite, 0.6 parts alginic acid, 0.8 parts marigold extract, and 0.3 parts boric acid by weight.

[0044] The preparation method of the above-mentioned foliar fertilizer with the effect of controlling excessive growth in corn includes the following steps:

[0045] Mix the above ingredients evenly according to the mass fractions, then dilute with water 900 times to obtain a foliar fertilizer that controls excessive growth in corn.

[0046] Example 2

[0047] A foliar fertilizer for controlling excessive growth in corn is composed of 2 parts ferrous sulfate, 2 parts zinc sulfate, 1 part magnesium sulfate, 0.2 parts sodium selenite, 0.5 parts alginic acid, 1 part marigold extract, and 0.4 parts boric acid by weight.

[0048] The preparation method of the above-mentioned foliar fertilizer with the effect of controlling excessive growth in corn includes the following steps:

[0049] Mix the above ingredients evenly according to the mass fractions, then dilute with water 900 times to obtain a foliar fertilizer that controls excessive growth in corn.

[0050] Example 3

[0051] A foliar fertilizer for controlling excessive growth in corn is composed of 1 part ferrous sulfate, 1 part zinc sulfate, 2 parts magnesium sulfate, 0.4 parts sodium selenite, 0.8 parts alginic acid, 0.5 parts marigold extract, and 0.4 parts boric acid by weight.

[0052] The preparation method of the above-mentioned foliar fertilizer with the effect of controlling excessive growth in corn includes the following steps:

[0053] Mix the above ingredients evenly according to the mass fractions, then dilute with water 900 times to obtain a foliar fertilizer that controls excessive growth in corn.

[0054] Example 4

[0055] A foliar fertilizer for controlling excessive growth in corn is composed of 1.5 parts ferrous sulfate, 1.5 parts zinc sulfate, 2 parts magnesium sulfate, 0.4 parts sodium selenite, 0.5 parts alginic acid, 1 part marigold extract, and 0.2 parts boric acid by weight.

[0056] The preparation method of the above-mentioned foliar fertilizer with the effect of controlling excessive growth in corn includes the following steps:

[0057] Mix the above ingredients evenly according to the mass fractions, then dilute with water 900 times to obtain a foliar fertilizer that controls excessive growth in corn.

[0058] Comparative Example 1

[0059] The only difference from Example 1 is that the marigold extract was omitted.

[0060] Example 1 of effect verification

[0061] The effects of the foliar fertilizers prepared in Examples 1-4 and Comparative Example 1 were verified as follows:

[0062] Test location: A plot of land in the suburbs of Handan City, Hebei Province

[0063] Experimental crop variety: Cai Tian Nuo 168

[0064] Experimental methods: The experimental plots were divided into 6 groups, each with 0.15 mu. In the groups 1-5, when the corn had 7-8 leaves, the foliar fertilizers prepared in Examples 1-4 and Comparative Example 1 were applied respectively (labeled as Example 1, Example 2, Example 3, Example 4 and Comparative Example 1). The fertilization method was spraying until the leaves were moist. In the group 6, no foliar fertilizer was applied when the corn had 7-8 leaves (labeled as the control group). The remaining water and fertilizer management was carried out according to the local conventional management methods. The management methods of the 6 groups were the same.

[0065] Before corn harvest, the ear height of each group was measured. The results showed that the ear height of Examples 1 to 4 was about 10-15 cm lower than that of the control group; the ear height of Comparative Example 1 was comparable to that of the control group. This indicates that Examples 1 to 4 can effectively reduce the ear height of corn and alleviate excessive corn growth.

[0066] After the corn harvest, the yield (kg / mu) and the content of soluble sugar (mg / g) and vitamin C (mg / 100g) in each group of corn were statistically analyzed. The results are shown in Table 1. (The statistical measurement methods for yield and soluble sugar and vitamin C content are conventional technical means in this field and are not the focus of this invention patent protection. They will not be described in detail here.)

[0067] Table 1

[0068] Group Yield (kg / mu) Soluble sugars (mg / g) Vitamin C (mg / 100g) Example 1 1024.6 79.6 5.98 Example 2 1013.2 79.1 5.86 Example 3 1008.6 77.8 5.57 Example 4 1035.7 78.9 5.90 Comparative Example 1 1001.4 72.5 5.03 control group 907.3 69.7 4.86

[0069] Table 1 shows that the contents of soluble sugars and vitamin C in Examples 1-4 were significantly better than those in Comparative Example 1 and the control group. The yields of Examples 1-4 were also better than those in Comparative Example 1 and the control group. Comparing Examples 1 and Comparative Example 1, it can be seen that the omission of marigold extract has a significant impact on the contents of soluble sugars and vitamin C in corn, and also has a certain impact on corn yield.

[0070] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A foliar fertilizer with the effect of controlling excessive growth in corn, characterized in that, By weight, the raw materials include: 1-2 parts ferrous sulfate, 1-2 parts zinc sulfate, 1-2 parts magnesium sulfate, 0.2-0.4 parts sodium selenite, 0.5-0.8 parts alginic acid, 0.5-1 parts marigold extract, and 0.2-0.4 parts boric acid.

2. The foliar fertilizer for controlling excessive growth in corn according to claim 1, characterized in that, The marigold extract is an alcoholic extract of marigold flowers.

3. The foliar fertilizer for controlling excessive growth in corn according to claim 1, characterized in that, The preparation method of the marigold extract includes the following steps: The marigold flowers were crushed and added to an ethanol-water solution for ultrasonic extraction. The resulting solution was filtered and concentrated under reduced pressure to obtain the marigold extract.

4. The foliar fertilizer for controlling excessive growth in corn according to claim 3, characterized in that, The mass-to-volume ratio of the marigold flower to the ethanol aqueous solution is 1 g: 1-2 mL; the volume concentration of the ethanol aqueous solution is 75%-90%.

5. The foliar fertilizer for controlling excessive growth in corn according to claim 3, characterized in that, The ultrasonic extraction power is 200-500W, and the time is 10-15min.

6. The foliar fertilizer for controlling excessive growth in corn according to claim 3, characterized in that, The volume is reduced by decompression and concentrated to 1 / 3 to 1 / 2 of its original volume.

7. A method for preparing a foliar fertilizer with corn growth-regulating effect according to any one of claims 1-6, characterized in that, The process includes the following steps: mixing the raw materials evenly according to the mass fractions, then diluting them with water 800-1000 times to obtain the foliar fertilizer that has the effect of controlling excessive growth in corn.

8. The application of the foliar fertilizer with corn growth control effect as described in any one of claims 1-6 in corn planting.

9. A method for improving corn yield and quality, characterized in that, When the corn has grown to 7-8 leaves, spray the foliar fertilizer with the corn growth control effect as described in any one of claims 1-6.