A kind of rape clubroot disease prevention and control fertilizer and preparation method thereof

Abstract

The present application discloses a rape clubroot prevention and control fertilizer and a preparation method thereof, and relates to the technical field of rape clubroot prevention and control. A rape clubroot prevention and control fertilizer, by weight, includes the following components: 20-30 parts of a nitrogen source, 18-23 parts of a phosphorus source, 17-22 parts of a potassium source, 20-30 parts of slaked lime, 0.3-0.8 parts of magnesium sulfate, 0.5-1.0 parts of sodium borate, 10-15 parts of humus, and 0.3-0.8 parts of a growth regulator. The rape clubroot prevention and control fertilizer of the present application is rich in a variety of nutrients and organic substances. Through the coordinated use of each component, the soil ecological environment can be effectively regulated, the root growth of rape can be promoted, and the cold and disease resistance of rape can be enhanced, thereby effectively preventing the occurrence of rape clubroot and increasing rape yield.

Description

Technical Field

[0001] The present application relates to the technical field of rape clubroot disease prevention and control, and in particular to a rape clubroot disease prevention and control fertilizer and a preparation method thereof. Background Art

[0002] As a disease caused by Brassicae root-knot fungus, rapeseed clubroot poses a serious threat to the rapeseed industry. Its main characteristic is that the pathogen infects the roots of rapeseed, causing the main root or lateral root to swell into spindle-shaped or irregular tumors, seriously affecting the growth and yield of rapeseed. Rapeseed clubroot is widely distributed around the world, especially in the main rapeseed producing areas in China, where the disease is particularly serious. The dormant spores of Brassicae root-knot fungus can survive in the soil for more than 10 years and are mainly spread through soil, irrigation water and seeds. The conditions for the disease mainly include soil pH, temperature and humidity, and cultivation methods. The disease is particularly serious when the soil pH is 5.4-6.5, the temperature is 19-25℃, and the humidity is high. In addition, unreasonable cultivation methods, such as continuous cropping, low-lying waterlogging, and the application of uncomposted diseased residues, also provide favorable conditions for the occurrence of the disease. The fungus is suitable for surviving in acidic soil. The soil in rapeseed planting areas in the southwest region is acidic. In addition, the extensive use of chemical fertilizers has caused soil compaction and reduced organic matter content, which has aggravated the acidification of the soil and provided favorable living conditions for root-knot bacteria, thus leading to the large-scale occurrence of rapeseed root-knot disease. At present, my country's prevention and control of rapeseed root-knot disease mainly focuses on two aspects: one is agricultural prevention and control, timely removal of diseased residues in the field, digging ditches to reduce field humidity, using lime to adjust soil pH, and implementing reasonable rotation with non-cruciferous crops, etc., by cutting off the transmission path of the disease and reducing the infection opportunity of pathogens, so as to achieve control of rapeseed root-knot disease; the second is chemical prevention and control, through chemical pesticides to irrigate the roots of rapeseed to achieve control of pathogens.

[0003] However, although agricultural prevention and control is economical, environmentally friendly, and highly sustainable, it is slow to take effect, and it usually takes some time for the prevention and control effect to show. When the disease has already occurred, agricultural prevention and control methods may not be able to quickly control the spread of the disease; and the operation requirements are high, requiring farmers to have high agricultural knowledge and skills, such as reasonable crop rotation, soil improvement and other agricultural measures require scientific planning and operation. If the operation is improper, it may affect the prevention and control effect and even have a negative impact on rapeseed growth; chemical prevention and control is convenient to operate, but the prevention and control effect is related to the time and number of applications, and root irrigation usually requires 2-3 times, the amount of agents used is large, the prevention and control cost is high, and the use of a large amount of chemical pesticides will pollute the soil, water sources and air, affecting the ecological environment and biodiversity. Therefore, in order to reduce the occurrence of rapeseed root root disease and increase rapeseed yield, this application proposes a rapeseed root root disease prevention and control fertilizer. Summary of the invention

[0004] The main purpose of the present application is to provide a rapeseed clubroot disease prevention and control fertilizer and a preparation method thereof, aiming to solve the technical problem that the existing technology is difficult to achieve effective prevention and control of rapeseed clubroot disease.

[0005] To achieve the above purpose, the present application proposes a rapeseed clubroot disease prevention and control fertilizer, which comprises the following components by weight:

[0006] 20-30 parts of nitrogen source, 18-23 parts of phosphorus source, 17-22 parts of potassium source, 20-30 parts of slaked lime, 0.3-0.8 parts of magnesium sulfate, 0.5-1.0 parts of sodium borate, 10-15 parts of humus and 0.3-0.8 parts of growth regulator.

[0007] Optionally, the components include, by weight:

[0008] 22 parts of nitrogen source, 19 parts of phosphorus source, 17 parts of potassium source, 30 parts of slaked lime, 0.5 parts of magnesium sulfate, 0.6 parts of sodium borate, 10 parts of humus and 0.9 parts of growth regulator.

[0009] Optionally, the nitrogen source includes at least one of urea, ammonium phosphate and ammonium chloride.

[0010] Optionally, the phosphorus source comprises monoammonium phosphate.

[0011] Optionally, the potassium source comprises potassium sulfate.

[0012] Optionally, the humus is a fermentation product of straw and livestock manure;

[0013] The preparation steps of the humus include:

[0014] The straw and livestock manure are crushed and mixed to obtain a mixed material;

[0015] The mixed material is placed in a fermentation tank for biological fermentation to obtain a fermented material, and then the fermented material is dried at 80-90° C. and crushed to obtain the humus.

[0016] Optionally, the growth regulators include naphthyl acetic acid, gibberellins and indole acetic acid.

[0017] The present application also proposes a method for preparing a rapeseed clubroot prevention and control fertilizer, comprising the following steps:

[0018] The nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured respectively, and then humus is added to stir and mix evenly. After granulation and screening, the mixture is dried to obtain a rapeseed root knot disease prevention and control fertilizer.

[0019] Optionally, the nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured separately, humus is added and stirred, and then granulated and screened, which comprises:

[0020] After the nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured respectively, humus is added, stirred for 30-50 minutes, granulated and sieved, and the particle size is controlled to be 2-3 mm.

[0021] Optionally, in the drying step, a dryer is used for drying, and the inlet temperature of the dryer is controlled to be 105-125°C, and the outlet temperature of the dryer is controlled to be 50-60°C.

[0022] This application includes at least the following beneficial effects:

[0023] The present application adopts nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate, humus and growth regulator as raw materials for rapeseed clubroot prevention and control fertilizer. Among them, nitrogen plays an important role in the construction of plant organs, and nitrogen is also an important component of chlorophyll, which directly affects the normal photosynthesis and the synthesis and accumulation of photosynthetic products. If nitrogen is sufficient, rapeseed will have more and larger leaves, strong cold resistance, more branches, longer inflorescences, and a large number of flower horns. Since rapeseed is a phosphorus-loving crop, phosphorus can act as a medium for the energy transfer system during the growth and development of rapeseed. Therefore, the present application adds a phosphorus source to promote root development in the rapeseed seedling stage and enhance the rapeseed's cold resistance. Potassium can promote the growth of rapeseed seedlings, increase the number of rapeseed leaves and dry weight, which is beneficial for the rapeseed seedlings to survive the winter, and can also increase the height of the rapeseed plant, increase the number of branches, increase the number of horns and grains, and improve the oil content of rapeseed seeds. Slaked lime can neutralize soil It can reduce the acidity in rapeseed and provide calcium to maintain the strength and stability of rapeseed cell walls, and affect the growth of rapeseed roots and leaves; magnesium sulfate can increase rapeseed yield, improve rapeseed quality and enhance its stress resistance, and the combination of magnesium sulfate and slaked lime can also accelerate rapeseed's absorption of calcium ions, further promoting the growth of rapeseed roots and leaves; rapeseed is a crop that is sensitive to boron, and sodium borate can regulate the formation of organic acids during the growth of rapeseed to prevent root necrosis caused by the accumulation of organic acids in the roots. Sodium borate can also promote the differentiation and development of roots, stems, leaves and branches, and enhance the cold resistance and disease resistance of rapeseed. The circulation of water compounds; humus can directly increase the content of soil organic matter, avoid soil compaction, and increase soil permeability, thereby reducing the incidence of clubroot; and growth regulators can stimulate the growth of rapeseed tissue and promote the formation of rapeseed roots. The rapeseed root root disease prevention and control fertilizer of the present application is rich in various nutrients and organic substances. Through the coordinated use of the various components in the present application, it can effectively regulate the soil ecological environment, promote the growth of rapeseed roots, and enhance rapeseed's cold and disease resistance, thereby effectively reducing the occurrence of rapeseed root root disease, and increasing rapeseed yield and improving rapeseed quality. DETAILED DESCRIPTION

[0024] The technical solutions in this application will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] In view of the technical problems existing in the prior art, the embodiments of the present application provide a rape clubroot disease prevention and control fertilizer, which comprises the following components by weight:

[0026] 20-30 parts of nitrogen source, 18-23 parts of phosphorus source, 17-22 parts of potassium source, 20-30 parts of slaked lime, 0.3-0.8 parts of magnesium sulfate, 0.5-1.0 parts of sodium borate, 10-15 parts of humus and 0.3-0.8 parts of growth regulator.

[0027] The present application adopts nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate, humus and growth regulator as raw materials for rapeseed clubroot prevention and control fertilizer. Among them, nitrogen plays an important role in the construction of plant organs, and nitrogen is also an important component of chlorophyll, which directly affects the normal photosynthesis and the synthesis and accumulation of photosynthetic products. If nitrogen is sufficient, rapeseed will have more and larger leaves, strong cold resistance, more branches, longer inflorescences, and a large number of flower horns. Since rapeseed is a phosphorus-loving crop, phosphorus can act as a medium for the energy transfer system during the growth and development of rapeseed. Therefore, the present application adds a phosphorus source to promote root development in the rapeseed seedling stage and enhance the rapeseed's cold resistance. Potassium can promote the growth of rapeseed seedlings, increase the number of rapeseed leaves and dry weight, which is beneficial for the rapeseed seedlings to survive the winter, and can also increase the height of the rapeseed plant, increase the number of branches, increase the number of horns and grains, and improve the oil content of rapeseed seeds. Slaked lime can neutralize soil It can reduce the acidity in rapeseed and provide calcium to maintain the strength and stability of rapeseed cell walls, and affect the growth of rapeseed roots and leaves; magnesium sulfate can increase rapeseed yield, improve rapeseed quality and enhance its stress resistance, and the combination of magnesium sulfate and slaked lime can also accelerate rapeseed's absorption of calcium ions, further promoting the growth of rapeseed roots and leaves; rapeseed is a crop that is sensitive to boron, and sodium borate can regulate the formation of organic acids during the growth of rapeseed to prevent root necrosis caused by the accumulation of organic acids in the roots. Sodium borate can also promote the differentiation and development of roots, stems, leaves and branches, and enhance the cold resistance and disease resistance of rapeseed. The circulation of water compounds; humus can directly increase the content of soil organic matter, avoid soil compaction, and increase soil permeability, thereby reducing the incidence of clubroot; and growth regulators can stimulate the growth of rapeseed tissue and promote the formation of rapeseed roots. The rapeseed root root disease prevention and control fertilizer of the present application is rich in various nutrients and organic substances. Through the coordinated use of the various components in the present application, it can effectively regulate the soil ecological environment, promote the growth of rapeseed roots, and enhance rapeseed's cold and disease resistance, thereby effectively reducing the occurrence of rapeseed root root disease, and increasing rapeseed yield and improving rapeseed quality.

[0028] As an implementation method of the present application, the components include, by weight:

[0029] 22 parts of nitrogen source, 19 parts of phosphorus source, 17 parts of potassium source, 30 parts of slaked lime, 0.5 parts of magnesium sulfate, 0.6 parts of sodium borate, 10 parts of humus and 0.9 parts of growth regulator.

[0030] The present application has been verified through experiments, and when the rapeseed clubroot disease prevention and control fertilizer prepared by the above-mentioned weight portions is applied, it has the effect of significantly reducing the incidence of rapeseed clubroot disease and increasing rapeseed yield, and shows good results in the prevention and control of rapeseed clubroot disease.

[0031] As an implementation method of the present application, the nitrogen source includes at least one of urea, ammonium phosphate and ammonium chloride. The nitrogen content of urea (CO(NH2)2) is as high as 46%, the nitrogen content of ammonium phosphate ((NH4)3PO4) is 11%, and the nitrogen content of ammonium chloride (NH4Cl) is 25%. Urea is preferably used as the nitrogen source, which has a high nitrogen content and can be quickly absorbed and utilized by rapeseed to meet the rapeseed's demand for nitrogen.

[0032] As an implementation method of the present application, the phosphorus source includes monoammonium phosphate. Monoammonium phosphate (NH4H2PO4) contains appropriate amounts of the three major nutrients of nitrogen, phosphorus, and potassium, especially a high content of phosphorus, with a phosphorus content of up to 61%, which can provide rapeseed with a rich supply of phosphorus, meet the rapeseed's demand for phosphorus, quickly supplement nutrients for rapeseed, and increase the growth rate of rapeseed.

[0033] As an implementable method of the present application, the potassium source includes potassium sulfate. Potassium ions in potassium sulfate can stimulate rapeseed to produce more osmotic regulating substances, improve rapeseed's stress resistance and cold resistance, and enhance the circulation of disease-resistant water compounds in rapeseed, thereby improving rapeseed's ability to resist clubroot. Potassium sulfate can also supplement the potassium and sulfur elements required for rapeseed growth, while improving soil fertility. Potassium sulfate can also promote the absorption and utilization of nitrogen, and promote the robust growth of rapeseed.

[0034] As an implementation method of the present application, the humus is a fermentation product of straw and livestock manure;

[0035] The preparation steps of the humus include:

[0036] The straw and livestock manure are crushed and mixed to obtain a mixed material;

[0037] The mixed material is placed in a fermentation tank for biological fermentation to obtain a fermented material, and then the fermented material is dried at 80-90° C. and crushed to obtain the humus.

[0038] In the specific implementation process, the straw can be selected from crop straws such as corn straw, wheat straw, rape straw, and rice straw, and the livestock manure can be selected from one or more of chicken manure, duck manure, pig manure, cow manure, and sheep manure. By crushing the straw and livestock manure separately and then mixing them, it is beneficial to control the dry weight ratio and ensure the subsequent biological fermentation. The main function of controlling the dry weight ratio in the biological fermentation process is to adjust the C / N ratio and humidity in the fermentation process. If the C / N ratio is too high, the fermentation speed will slow down or even stop; if the C / N ratio is too low, it may cause odor to be emitted and attract pests. By controlling the dry weight ratio and adjusting the C / N ratio in the raw material, the smooth progress of biological fermentation can be ensured; and humidity is also an important factor affecting the fermentation effect. If the moisture content is too high, it will affect the fermentation speed; if the moisture content is too low, it may cause odor to be emitted. When the mixed material is placed in the fermentation tank, the present application preferably adjusts the moisture content to 50-65% before biological fermentation, which is beneficial to the formation of more organic matter through the decomposition and conversion of microorganisms during the fermentation process.

[0039] As an implementation method of the present application, the growth regulator includes naphthylacetic acid, gibberellin and indoleacetic acid.

[0040] Growth regulators play a vital role in the growth process of rapeseed. The present application adopts naphthylacetic acid, gibberellin and indoleacetic acid as growth regulators. The combined use of the three can coordinate the growth of the root system and the elongation of the stems, making the growth of the above-ground and underground parts of rapeseed more balanced. By promoting the growth of the root system and the vigorous development of the stems and leaves, rapeseed can improve its photosynthesis efficiency and enhance its ability to absorb water and nutrients. Gibberellin and indoleacetic acid can enhance rapeseed's resistance to environmental stress (such as drought, low temperature, etc.), while naphthylacetic acid can reduce flower and fruit drop and increase the fruit setting rate, thereby increasing the yield and stability of rapeseed. In addition, it promotes the differentiation of flower buds, increases the fruit setting rate, reduces early fruit shedding, and ultimately increases the yield of rapeseed during the flowering and fruiting stages. The combined use of naphthylacetic acid, gibberellins and indoleacetic acid can regulate the growth and development of rapeseed in many aspects. It not only enhances the root development of rapeseed, promotes the growth of stems and leaves, helps rapeseed maintain more efficient physiological functions and better growth performance at all stages of growth, but also improves the fruit set rate and stress resistance, thereby increasing the yield and quality of rapeseed.

[0041] The embodiment of the present application also provides a method for preparing a rape clubroot prevention and control fertilizer, comprising the following steps:

[0042] The nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured respectively, and then humus is added to stir and mix evenly. After granulation and screening, the mixture is dried to obtain a rapeseed root knot disease prevention and control fertilizer.

[0043] As an implementation method of the present application, the nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured separately, and then humus is added to stir and mix, and then granulation and screening steps are performed, including:

[0044] After the nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured respectively, humus is added, stirred for 30-50 minutes, granulated and sieved, and the particle size is controlled to be 2-3 mm.

[0045] As an implementation method of the present application, in the drying step, a dryer is used for drying, and the inlet temperature of the dryer is controlled to be 105-125° C., and the outlet temperature of the dryer is controlled to be 50-60° C. By controlling the inlet temperature and outlet temperature of the dryer, it is beneficial to obtain a dry powdered product, and after the control fertilizer is bagged, it is beneficial to store and use.

[0046] In the specific implementation process, when the rapeseed clubroot disease prevention and control fertilizer of the present application is used, the dosage per mu is 40-60 kilograms, which can be spread in the field before rapeseed planting and evenly mixed with the soil during land preparation.

[0047] The above technical solution of the present application is described in detail below in conjunction with specific embodiments.

[0048] Example 1

[0049] A method for preparing a rape clubroot prevention and control fertilizer comprises the following steps:

[0050] The wheat straw and livestock manure are crushed and mixed to obtain a mixed material;

[0051] Placing the mixture in a fermentation tank for biological fermentation to obtain a fermented material, and then drying the fermented material at 85° C. and crushing it to obtain humus;

[0052] 25 kg of urea, 18 kg of monoammonium phosphate, 20 kg of potassium sulfate, 23 kg of slaked lime, 0.5 kg of magnesium sulfate, 0.8 kg of sodium borate, 12 kg of humus, 0.4 kg of naphthylacetic acid, 0.1 kg of gibberellin and 0.2 kg of indoleacetic acid were measured respectively, and then the humus was added, and the mixture was stirred for 40 minutes by a mixer, and then sent to a granulator for granulation via a conveyor belt, and then sieved by a drum screen to control the particle size to 2 mm, and then dried in a dryer, and the inlet temperature of the dryer was controlled to be 115° C., and the outlet temperature of the dryer was controlled to be 55° C., so as to obtain a rapeseed clubroot prevention and control fertilizer.

[0053] Example 2

[0054] A method for preparing a rape clubroot prevention and control fertilizer comprises the following steps:

[0055] The corn stalks and livestock manure are crushed and mixed to obtain a mixed material;

[0056] Placing the mixture in a fermentation tank for biological fermentation to obtain a fermented material, and then drying the fermented material at 80° C. and crushing it to obtain humus;

[0057] 22kg of urea, 19kg of monoammonium phosphate, 17kg of potassium sulfate, 30kg of slaked lime, 0.5kg of magnesium sulfate, 0.6kg of sodium borate, 10kg of humus, 0.4kg of naphthaleneacetic acid, 0.4kg of gibberellin and 0.1kg of indoleacetic acid were measured respectively, and then the humus was added, and the mixture was stirred for 30 minutes by a mixer, and then sent to a granulator for granulation via a conveyor belt, and then sieved by a drum screen to control the particle size to 2mm, and then dried in a dryer, and the inlet temperature of the dryer was controlled to 105°C, and the outlet temperature of the dryer was controlled to 50°C, to obtain a rapeseed clubroot prevention and control fertilizer.

[0058] Example 3

[0059] A method for preparing a rape clubroot prevention and control fertilizer comprises the following steps:

[0060] The rape straw and livestock manure are crushed and mixed to obtain a mixed material;

[0061] Placing the mixture in a fermentation tank for biological fermentation to obtain a fermented material, and then drying the fermented material at 90° C. and crushing it to obtain humus;

[0062] 10kg of urea, 10kg of ammonium phosphate, 10kg of ammonium chloride, 20kg of monoammonium phosphate, 18kg of potassium sulfate, 20kg of slaked lime, 0.6kg of magnesium sulfate, 0.8kg of sodium borate, 10kg of humus, 0.2kg of naphthaleneacetic acid, 0.2kg of gibberellin and 0.2kg of indoleacetic acid were measured respectively, and then the humus was added, and the mixture was stirred for 50 minutes by a mixer, and then sent to a granulator for granulation via a conveyor belt, and then sieved by a drum screen to control the particle size to 3mm, and then dried in a dryer, and the inlet temperature of the dryer was controlled to 125°C, and the outlet temperature of the dryer was controlled to 60°C, to obtain a rapeseed clubroot prevention and control fertilizer.

[0063] Example 4

[0064] A method for preparing a rape clubroot prevention and control fertilizer comprises the following steps:

[0065] The wheat straw and livestock manure are crushed and mixed to obtain a mixed material;

[0066] Placing the mixture in a fermentation tank for biological fermentation to obtain fermented material, and then drying the fermented material at 82° C. and crushing it to obtain humus;

[0067] 10kg of ammonium phosphate, 13kg of ammonium chloride, 18kg of monoammonium phosphate, 22kg of potassium sulfate, 20kg of slaked lime, 0.5kg of magnesium sulfate, 0.7kg of sodium borate, 15kg of humus, 0.3kg of naphthaleneacetic acid, 0.2kg of gibberellin and 0.3kg of indoleacetic acid were measured respectively, and then the humus was added, and the mixture was stirred for 35 minutes by a mixer, and then sent to a granulator for granulation via a conveyor belt, and then sieved by a drum screen to control the particle size to 2mm, and then dried in a dryer, and the inlet temperature of the dryer was controlled to 120°C, and the outlet temperature of the dryer was controlled to 52°C, to obtain a rapeseed clubroot prevention and control fertilizer.

[0068] Test example

[0069] Through field experiments, the effects of the application of the rape clubroot prevention and control fertilizer prepared in the present application on the prevention and control of rape clubroot and on increasing rapeseed yield were analyzed and evaluated.

[0070] The specific operation is: select a field with uniform soil fertility and rapeseed clubroot in Jinshi Town, Santai County as the test site, divide the test site into five treatment groups, and the test fertilizers used in each treatment group are as follows:

[0071] Treatment group 1: using the rape clubroot disease prevention and control fertilizer prepared in Example 1, with a dosage of 50 kg per mu;

[0072] Treatment group 2: using the rape clubroot disease prevention and control fertilizer prepared in Example 2, with a dosage of 50 kg per mu;

[0073] Treatment 3: The rape clubroot disease prevention and control fertilizer prepared in Example 3 was used at a dosage of 50 kg per mu;

[0074] Treatment 4: using the rape clubroot disease prevention and control fertilizer prepared in Example 4, with a dosage of 50 kg per mu;

[0075] Treatment 5: Mix and apply 40 kg of triple compound fertilizer and 10 kg of urea per mu on the market.

[0076] The fertilization method for each treatment group was to spread and cover the rapeseed according to the per-acre amount before planting, then sow the rapeseed, and then dig furrows. Other field management measures (such as irrigation, pest and disease control, etc.) remained consistent.

[0077] The number of diseased rapeseed plants in each treatment group was investigated 5 weeks after rapeseed sowing. The diagonal sampling method was adopted for each treatment group, and 20 plants were fixedly investigated at each point. The diseased plant rate was calculated according to the formula, and the yield of rapeseed in each treatment group was counted after harvest.

[0078] The calculation formula of disease rate is as follows:

[0079] Disease rate (%) = number of diseased plants / total number of plants surveyed × 100%

[0080] The test results are shown in Table 1 below.

[0081] Table 1

[0082] deal with Disease rate (%) Yield (catties / mu) Treatment 1 group 21.6 295 Treatment 2 groups 9.3 350 Treatment 3 groups 34.7 250 Treatment 4 groups 26.8 269 Treatment 5 groups 83.6 210

[0083] As can be seen from Table 1, after applying the rapeseed root root disease prevention and control fertilizer of the present application, the diseased plant rate of rapeseed was 9.3-34.7%, and the rapeseed yield was 250-350 jin / mu. The diseased plant rate of the control group was 83.6%, and the yield was 210 jin / mu. Compared with the currently commonly used ternary compound fertilizer and urea, the rapeseed root root disease prevention and control fertilizer prepared by the present application can effectively reduce the diseased plant rate of rapeseed root root disease, achieve the prevention and control of rapeseed root root disease, and at the same time can significantly increase the yield of rapeseed.

[0084] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A rape clubroot prevention and control fertilizer, characterized in that: By weight, it includes the following components: 20-30 parts of nitrogen source, 18-23 parts of phosphorus source, 17-22 parts of potassium source, 20-30 parts of slaked lime, 0.3-0.8 parts of magnesium sulfate, 0.5-1.0 parts of sodium borate, 10-15 parts of humus and 0.3-0.8 parts of growth regulator.

2. The rape clubroot prevention and control fertilizer according to claim 1, characterized in that: By weight, the components include: 22 parts of nitrogen source, 19 parts of phosphorus source, 17 parts of potassium source, 30 parts of slaked lime, 0.5 parts of magnesium sulfate, 0.6 parts of sodium borate, 10 parts of humus and 0.9 parts of growth regulator.

3. The rape clubroot prevention and control fertilizer according to claim 1, characterized in that: The nitrogen source includes at least one of urea, ammonium phosphate and ammonium chloride.

4. The rape clubroot prevention and control fertilizer according to claim 1, characterized in that: The phosphorus source includes monoammonium phosphate.

5. The rape clubroot prevention and control fertilizer according to claim 1, characterized in that: The potassium source includes potassium sulfate.

6. The rape clubroot prevention and control fertilizer according to claim 1, characterized in that: The humus is a fermentation product of straw and livestock manure; The preparation steps of the humus include: The straw and livestock manure are crushed and mixed to obtain a mixed material; The mixed material is placed in a fermentation tank for biological fermentation to obtain a fermented material, and then the fermented material is dried at 80-90° C. and crushed to obtain the humus.

7. The rape clubroot prevention and control fertilizer according to claim 1, characterized in that: The growth regulators include naphthyl acetic acid, gibberellins and indole acetic acid.

8. The method for preparing the rape clubroot prevention and control fertilizer according to any one of claims 1 to 7, characterized in that: The following steps are involved: The nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured respectively, and then humus is added to stir and mix evenly. After granulation and screening, the mixture is dried to obtain a rapeseed root knot disease prevention and control fertilizer.

9. The method for preparing the rape clubroot prevention and control fertilizer according to claim 8, characterized in that: The steps of measuring the nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator respectively, adding humus to stir and mix, and then granulating and screening include: After the nitrogen source, phosphorus source, potassium source, slaked lime, magnesium sulfate, sodium borate and growth regulator are measured respectively, humus is added, stirred for 30-50 minutes, granulated and sieved, and the particle size is controlled to be 2-3 mm.

10. The method for preparing the rape clubroot prevention and control fertilizer according to claim 8, characterized in that: In the drying step, a dryer is used for drying, and the inlet temperature of the dryer is controlled to be 105-125°C, and the outlet temperature of the dryer is controlled to be 50-60°C.