Corn lodging-resistant yield-increasing regulator and preparation method thereof

Abstract

The invention belongs to the technical field of agricultural planting, and provides a lodging-resistant and yield-increasing regulator for corn and a preparation method of the lodging-resistant and yield-increasing regulator. The preparation method comprises the following steps: S1, mixing salicylic acid with water to obtain a solution A; s2, mixing trace elements, silanol compounds and the solution A to obtain a solution B; s3, mixing ethephon, chlormequat chloride, the synergist and the solution B to obtain the lodging-resistant and yield-increasing regulator for corn. The lodging-resistant and yield-increasing regulator for the corn, provided by the invention, has a remarkable synergistic effect, and can promote the development process of corn ears while reducing the height of the corn ears and increasing the strength of stalks, so that the yield of the corn can be increased on the basis of lodging resistance.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural planting, and in particular to a corn lodging resistance and yield-increasing regulator and a preparation method thereof. Background Art

[0002] Corn is an important food and feed crop. In recent years, my country's demand for corn has been increasing year by year. The main way to increase corn yield is to increase planting density. However, under high-density conditions, the quality of the corn population decreases, its stress resistance is weak, and lodging occurs frequently.

[0003] The impact of lodging on corn production includes the following aspects: (1) Inhibition of corn photosynthesis. When corn plants lodge, the leaves deviate, destroying the original canopy structure, causing the leaf light energy absorption to decrease, and inhibiting the light reaction of photosynthesis. (2) Reducing corn yield and quality. Corn lodging can cause the root system to be disconnected, the stems to be severely bent or broken, the conductive tissue to be damaged, the plant's transport capacity to be weakened, and the roots to transport nutrients and water to the leaves to be blocked; when the stems are severely broken, the part above the wound may dry up and die, causing photosynthesis and grain filling to stop, and even causing corn to fail to produce. (3) It increases the difficulty of field management and harvesting. Corn lodging causes the stems to be intertwined and pressed, increasing the difficulty of weeding, fertilization, irrigation, and pest control; after corn lodging, the original upright state of the plant changes, and the plant may tilt or break, increasing the difficulty of mechanical harvesting at maturity and reducing agricultural production efficiency.

[0004] At present, the use of plant growth regulators in crop production is an economical, efficient and simple technical measure. However, existing plant growth regulators such as auxins or brassinolide, although they can promote crop growth, have limited regulatory effects on lodging resistance. Therefore, how to provide a growth regulator that can both increase corn yield and prevent corn lodging has become a problem that technicians in this field need to solve urgently. Summary of the invention

[0005] In view of this, the present invention provides a corn growth regulator and a preparation method thereof, the purpose of which is to solve the technical problem that existing growth regulators are difficult to achieve both lodging resistance and yield increase.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: The present invention provides a corn lodging resistance and yield-increasing regulator, comprising the following components in parts by weight: 20-40 parts of silanol compounds, 10-20 parts of ethephon, 1-10 parts of salicylic acid, 10-20 parts of chlormequat chloride, 1-5 parts of trace elements, 1-5 parts of synergist, and 80-120 parts of water.

[0007] Furthermore, the silanol compound includes dimethyl silanol and / or trimethyl silanol.

[0008] Furthermore, the trace elements include one or more of CuSO4, ZnSO4 and MnSO4.

[0009] Furthermore, the synergist includes one or more of potassium dihydrogen phosphate, glycine and serine.

[0010] The present invention also provides a method for preparing the above-mentioned corn lodging resistance and yield-increasing regulator, comprising the following steps: S1. Mix salicylic acid and water to obtain solution A; S2, mixing the trace elements, the silanol compound and the solution A to obtain a solution B; S3. Mix ethephon, chlormequat chloride, the synergist and solution B to obtain the corn lodging resistance and yield-increasing regulator.

[0011] Furthermore, in step S1, the mixing temperature is 40-80° C., and the mixing time is 10-50 min.

[0012] It can be seen from the above technical solution that compared with the prior art, the beneficial effects of the present invention are as follows: First, the silanol compounds in the present invention can effectively inhibit the excessive absorption of nitrogen by corn. In the traditional corn planting process, nitrogen is a key element to promote corn growth. However, excessive nitrogen supply will cause corn plants to grow too vigorously and weaken the cell wall structure, thereby reducing the mechanical strength of the plant and increasing the risk of lodging. The present invention fundamentally solves this problem by reducing the excessive absorption of nitrogen by corn, providing an important guarantee for the robust growth of corn plants.

[0013] Secondly, the present invention reduces the content of nitrogen compounds in corn leaves and stems. The accumulation of nitrogen compounds in plants can cause changes in the tissue structure of leaves and stems, affecting the physiological functions of plants, and further affecting the lodging resistance of corn. Through the present invention, the content of nitrogen compounds in corn leaves and stems is effectively controlled, the plant structure is more stable, and the lodging resistance is significantly enhanced.

[0014] Furthermore, the present invention enables corn leaves and stems to maintain upright growth. Lodging is one of the important factors affecting corn yield and quality. The present invention regulates the nitrogen absorption of corn plants so that the leaves and stems can maintain an upright state, and can effectively resist wind and rain even under adverse climatic conditions, reduce the lodging rate, and thus ensure the stability of corn yield.

[0015] Finally, the corn lodging resistance and yield-increasing regulator provided by the present invention has a significant synergistic effect. While reducing the height of corn cobs and increasing the strength of the stalks, it also promotes the development process of corn cobs, thereby increasing corn yield on the basis of lodging resistance.

[0016] In summary, the corn lodging resistance and yield-increasing regulator provided by the present invention realizes the effective regulation of corn nitrogen absorption through the application of silanol compounds, has significant technical advantages and positive effects, and provides strong support for the development of my country's corn industry. DETAILED DESCRIPTION

[0017] The present invention provides a corn lodging resistance and yield-increasing regulator, comprising the following components in parts by weight: 20-40 parts of silanol compounds, 10-20 parts of ethephon, 1-10 parts of salicylic acid, 10-20 parts of chlormequat chloride, 1-5 parts of trace elements, 1-5 parts of synergist, and 80-120 parts of water.

[0018] In the present invention, the amount of the silanol compound is preferably 25 to 35 parts, more preferably 30 parts.

[0019] In the present invention, the dosage of ethephon is preferably 12 to 18 parts, and more preferably 14 to 16 parts; ethephon has an effect on the rhizomes of corn, can dwarf the height of corn, make the leaves dense, upright growth, short and wide, and significantly increase the weight of corn ears.

[0020] In the present invention, the dosage of salicylic acid is preferably 2 to 8 parts, more preferably 4 to 6 parts; salicylic acid can increase the chlorophyll content, soluble protein and soluble sugar accumulation in leaves, thereby increasing the final yield of corn.

[0021] In the present invention, the dosage of chlormequat is preferably 12 to 18 parts, and more preferably 14 to 16 parts; chlormequat can increase the number of ears and yield of corn, and after use, the chlorophyll content increases, the leaf color becomes dark green, the photosynthesis is enhanced, the leaves become thicker, and the root system is well developed.

[0022] In the present invention, the amount of the trace element is preferably 2 to 4 parts, more preferably 3 parts.

[0023] In the present invention, the dosage of the synergist is preferably 2 to 4 parts, more preferably 3 parts.

[0024] In the present invention, the amount of water used is preferably 90 to 110 parts, more preferably 100 parts.

[0025] In the present invention, the silanol compound includes dimethylsilanol and / or trimethylsilanol, preferably dimethylsilanol.

[0026] In the present invention, the trace elements include one or more of CuSO4, ZnSO4 and MnSO4, preferably CuSO4 and / or ZnSO4, and more preferably CuSO4; the trace elements can promote the development of corn roots and stems and improve the stress resistance of corn.

[0027] In the present invention, the synergist includes one or more of potassium dihydrogen phosphate, glycine and serine, preferably glycine and / or serine, and more preferably glycine.

[0028] In the present invention, the corn lodging resistance and yield-increasing regulator is diluted with water to 1-2000 mg / kg, preferably 10-1500 mg / kg, and more preferably 100-1000 mg / kg before use.

[0029] The present invention also provides a method for preparing the above-mentioned corn lodging resistance and yield-increasing regulator, comprising the following steps: S1. Mix salicylic acid and water to obtain solution A; S2, mixing the trace elements, the silanol compound and the solution A to obtain a solution B; S3. Mix ethephon, chlormequat chloride, the synergist and solution B to obtain the corn lodging resistance and yield-increasing regulator.

[0030] In the present invention, in step S1, the mixing temperature is 40-80°C, preferably 50-70°C, and more preferably 60°C; the mixing time is 10-50 min, preferably 20-40 min, and more preferably 30 min.

[0031] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention. Example 1

[0032] The raw material components used in this embodiment are as follows: 30 parts of dimethylsilanol, 15 parts of ethephon, 5 parts of salicylic acid, 15 parts of chlormequat, 3 parts of trace elements (1 part each of CuSO4, ZnSO4 and MnSO4), 3 parts of glycine, and 100 parts of water.

[0033] Mix salicylic acid and water, and stir at 60°C for 30 minutes to completely dissolve the salicylic acid to obtain solution A; mix trace elements and dimethylsilanol with solution A at room temperature to obtain solution B; stir and mix ethephon, chlormequat, glycine and solution B at room temperature to obtain a corn lodging resistance and yield-increasing regulator. Example 2

[0034] The raw material components used in this embodiment are as follows: 20 parts of dimethylsilanol, 20 parts of ethephon, 2 parts of salicylic acid, 18 parts of chlormequat, 3 parts of trace elements (1 part each of CuSO4, ZnSO4 and MnSO4), 2 parts of potassium dihydrogen phosphate, and 100 parts of water.

[0035] Mix salicylic acid with water, stir for 25 minutes at 70°C to completely dissolve the salicylic acid to obtain solution A; mix trace elements and dimethylsilanol with solution A at room temperature to obtain solution B; stir and mix ethephon, chlormequat chloride, potassium dihydrogen phosphate and solution B at room temperature to obtain a corn lodging resistance and yield-increasing regulator. Example 3

[0036] The raw material components used in this embodiment are as follows: 25 parts of trimethylsilanol, 18 parts of ethephon, 4 parts of salicylic acid, 16 parts of chlormequat, 3 parts of trace elements (1 part each of CuSO4, ZnSO4 and MnSO4), 4 parts of serine, and 100 parts of water.

[0037] Mix salicylic acid with water, stir for 20 minutes at 80°C to completely dissolve the salicylic acid to obtain solution A; mix trace elements and dimethylsilanol with solution A at room temperature to obtain solution B; stir and mix ethephon, chlormequat chloride, serine and solution B at room temperature to obtain a corn lodging resistance and yield-increasing regulator. Example 4

[0038] The raw material components used in this embodiment are as follows: 35 parts of trimethylsilanol, 16 parts of ethephon, 6 parts of salicylic acid, 14 parts of chlormequat, 3 parts of trace elements (1 part each of CuSO4, ZnSO4 and MnSO4), 4 parts of synergist (2 parts each of serine and glycine), and 120 parts of water.

[0039] Mix salicylic acid with water, stir for 25 minutes at 80°C to completely dissolve the salicylic acid to obtain solution A; mix trace elements and trimethylsilanol with solution A at room temperature to obtain solution B; stir and mix ethephon, chlormequat chloride, a synergist and solution B at room temperature to obtain a corn lodging resistance and yield-increasing regulator. Example 5

[0040] The raw material components used in this embodiment are as follows: 40 parts of trimethylsilanol, 14 parts of ethephon, 8 parts of salicylic acid, 12 parts of chlormequat, 3 parts of trace elements (1 part each of CuSO4, ZnSO4 and MnSO4), 4 parts of synergist (2 parts each of serine and glycine), and 120 parts of water.

[0041] Mix salicylic acid with water, stir at 60°C for 40 minutes to completely dissolve the salicylic acid to obtain solution A; mix trace elements and trimethylsilanol with solution A at room temperature to obtain solution B; stir and mix ethephon, chlormequat chloride, a synergist and solution B at room temperature to obtain a corn lodging resistance and yield-increasing regulator. Comparative Example 1

[0042] The same as Example 1, except that no silanol compound is added. Comparative Example 2

[0043] The same as Example 1, except that ethephon and chlormequat were not added. Test and Inspection

[0044] Eight plots of land of equal area were set up, one plot was not applied with corn lodging resistance and yield-increasing regulator as a blank group, and the other seven plots were applied with corn growth regulators prepared in Examples 1 to 5 and Comparative Examples 1 to 2, respectively, at a dosage of 50 g / mu, and planted according to conventional methods. The yield was measured after the corn matured. The measurement results are shown in Table 1.

[0045] Table 1 Results of corn yield and lodging rate

[0046]

[0047] As shown in Table 1, the corn lodging resistance and yield-increasing regulator provided by the present invention can increase corn yield on the basis of lodging resistance, and the corn yield can reach up to 1089 kg / mu. Comparative Example 1 Compared with Comparative Example 2, the application of silanol compounds can significantly enhance the lodging resistance of corn.

[0048] In order to verify the effect of the regulator on regulating the absorption of nitrogen by corn, a corn pot experiment was conducted, with Example 1 as the experimental group and Comparative Example 1 as the control group. The specifications of the flower pots used in the pot experiment were 16 cm×20 cm.

[0049] (1) Soil from the test field was randomly selected, and the soil was mixed after being sieved through a 5 mm sieve. 5 kg of sieved soil was initially added to each pot for determination of relevant background physical and chemical properties, mainly total nitrogen, nitrate nitrogen and ammonium nitrogen in the soil (total nitrogen was digested with sulfuric acid and determined by the sodium salicylate method; nitrate nitrogen was extracted with potassium chloride and determined by ultraviolet spectrophotometry; ammonium nitrogen was extracted with potassium chloride and determined by the indophenol blue colorimetric method). The background physical and chemical values ​​of the soil in the test field were determined as follows: total nitrogen 3.26 g / kg, nitrate nitrogen 0.45 g / kg, and ammonium nitrogen 5.89 g / kg.

[0050] (2) Sterilize and germinate corn seeds indoors, select seeds with full grains for sowing, and sow 2 seeds per pot. Cultivate under natural light conditions, water once every 4 days to maintain 68% humidity for plant growth, and use the regulator at a dosage of 100 mg / kg of soil. The same cultivation and management measures are used during the planting process of corn plants.

[0051] (3) After sampling, the above-ground and underground parts of the corn were dried, crushed and sieved. The total nitrogen content was determined using the sulfuric acid digestion-sodium salicylate method. The results are shown in Table 2.

[0052] Table 2 Total nitrogen content determination results

[0053] It can be seen from Table 1 that after using the corn lodging resistance and yield-increasing regulator prepared by the present invention, the nitrogen content of each part of the corn is significantly improved.

[0054] (4) After soil sampling, it was stored in a refrigerator at 2°C for the determination of subsequent indicators. The ammonium nitrogen content of the soil was determined by the sodium salicylate method; the nitrate nitrogen content was determined by the copper-zinc-hydrazine sulfate reduction method; the determination results are shown in Table 3.

[0055] Table 3 Determination results of ammonium nitrogen and nitrate nitrogen in soil

[0056] As shown in Table 3, compared with the original soil, the contents of ammonium nitrogen and nitrate nitrogen in the soil of the experimental group after planting decreased; compared with the control group, the content of ammonium nitrogen in the experimental group showed an increasing trend, while the content of nitrate nitrogen showed a decreasing trend.

[0057] In the present invention, both dimethylsilanol and trimethylsilanol are a form of organic silicon, and dimethylsilanol and trimethylsilanol are stable silicon compounds under normal storage and use conditions, so dimethylsilanol and trimethylsilanol are also organic silicon fertilizers. Silicon fertilizer not only improves the agronomic efficiency of nitrogen, but also reduces the amount of nitrogen fertilizer applied, thereby helping to reduce excessive nitrogen absorption; at the same time, silicon fertilizer can also improve the photosynthesis and nutrient absorption of corn plants, enhance nitrogen utilization efficiency, and further reduce excessive nitrogen absorption.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A corn lodging resistance and yield-increasing regulator, characterized in that: The composition comprises the following components in parts by weight: 20-40 parts of silanol compounds, 10-20 parts of ethephon, 1-10 parts of salicylic acid, 10-20 parts of chlormequat, 1-5 parts of trace elements, 1-5 parts of synergist, 80-120 parts of water; The silanol compound includes dimethylsilanol and / or trimethylsilanol.

2. The corn lodging resistance and yield-increasing regulator according to claim 1, characterized in that: The trace elements include one or more of CuSO4, ZnSO4 and MnSO4.

3. The corn lodging resistance and yield-increasing regulator according to claim 2, characterized in that: The synergist includes one or more of potassium dihydrogen phosphate, glycine and serine.

4. The method for preparing the corn lodging resistance and yield-increasing regulator according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Mix salicylic acid and water to obtain solution A; S2, mixing the trace elements, the silanol compound and the solution A to obtain a solution B; S3. Mix ethephon, chlormequat chloride, the synergist and solution B to obtain the corn lodging resistance and yield-increasing regulator.

5. The method for preparing the corn lodging resistance and yield-increasing regulator according to claim 4, characterized in that: In the step S1, the mixing temperature is 40-80° C., and the mixing time is 10-50 min.

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