Improved coconut potash fertilizer with potassium stabilizing effect as well as preparation method and application of improved coconut potash fertilizer

Abstract

The invention discloses an improved coconut potash fertilizer with a potassium stabilizing effect as well as a preparation method and application of the improved coconut potash fertilizer, and belongs to the technical field of fertilizers. The fertilizer is prepared from the following raw materials: 800 to 1000 parts of humic acid, 1500 to 2000 parts of organic mixed fertilizer, 500 to 800 parts of plant ash, 2 to 4 parts of organic fertilizer decomposition agent, 100 to 250 parts of magnesium oxide powder, 400 to 480 parts of potassium fertilizer and 400 to 480 parts of ammonium fertilizer, the organic mixed fertilizer is a decomposed organic mixed fertilizer composed of livestock manure and fresh plant branches and leaves. After the improved coconut potash fertilizer with the potassium stabilizing effect is applied, the effects of remarkably increasing the crop yield and reducing the potassium loss of soil are achieved, the effects of reducing the application cost of the potash fertilizer and protecting the agricultural ecological environment can be achieved, and the method is economical and environmentally friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to an improved coconut potash fertilizer with potassium stabilizing effect and a preparation method and application thereof. Background Art

[0002] Potassium fertilizer is not an inert fertilizer in the soil. It can promote plant growth, regulate soil properties, and increase crop yields. Potassium fertilizer generally exists in the form of potassium ions. After entering the soil, potassium ions will adsorb and exchange ions with organic matter and inorganic matter in the soil, which helps the diffusion and distribution of potassium ions in the soil. Potassium ions in potassium fertilizers may also form complexes with aluminum ions, iron ions, and ammonium ions in the soil, or be converted by soil microorganisms into organic potassium that can be absorbed and utilized by plants. Potassium fertilizer can regulate soil moisture and permeability, improve soil structure, and enhance soil fertility. Sandy soil has poor structure and weak water and fertilizer retention capabilities. In order to obtain high yields of crops, excessive fertilizers are often applied when planting crops on sandy soil. Because potassium fertilizer is easily lost in the soil, especially in sandy soil, it leads to low crop absorption and utilization. For example, coconuts are often planted in Hainan's barren coastal sandy soils, and a large amount of potassium fertilizer needs to be supplied in coconut planting. However, after potassium fertilizer is applied to the soil, coconut absorption and utilization are low, which still causes coconut potassium deficiency, resulting in coconut growth stunted and low yield. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an improved coconut potash fertilizer with potassium stabilizing effect and a preparation method and application thereof.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] One of the technical solutions of the present invention:

[0006] An improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials in parts by weight: 800-1000 parts of humic acid, 1500-2000 parts of organic mixed fertilizer, 500-800 parts of plant ash, 2-4 parts of organic fertilizer decomposition agent, 100-250 parts of magnesium oxide powder, 400-480 parts of potash fertilizer and 400-480 parts of ammonium fertilizer;

[0007] The organic mixed fertilizer is a decomposed organic mixed fertilizer made from livestock excrement and fresh plant branches and leaves.

[0008] Sandy soil has a loose texture and poor fertilizer retention capacity, and potassium is easily lost with water. Humic acid contains rich functional groups that can adsorb and store potassium ions to prevent them from being lost with water. In addition, humic acid can prevent potassium from being fixed by the soil through chelation, thereby improving the utilization rate of potassium; the decomposed organic mixed fertilizer composed of livestock manure and fresh plant branches and leaves can increase the organic matter content in the soil and improve the soil aggregate structure, thereby improving the soil's ability to retain water and fertilizer. The humic acid produced during the decomposition process can also adsorb and store potassium ions, reducing the loss of potassium. Plant ash is rich in potassium salts, and potassium exists in a fast-acting state, which can be quickly absorbed and utilized by plants; organic fertilizer composting agents can accelerate the composting process of organic materials and promote the decomposition of organic matter into effective components such as humic acid, which can adsorb and store potassium ions, improve soil structure, and enhance the soil's ability to retain fertilizer; magnesium oxide powder can adjust soil pH, improve soil physical and chemical properties, and reduce the loss of potassium ions; potassium fertilizer directly supplements potassium in the soil, while ammonium fertilizer can improve the soil's cation exchange capacity and enhance the soil's ability to adsorb potassium ions. Ammonium fertilizer can also indirectly improve the utilization rate of potassium in the soil by promoting plant growth. In short, humic acid and organic mixed fertilizers can increase the organic matter content in the soil, improve the soil's aggregate structure, enhance the soil's ability to retain water and fertilizer, and reduce the loss of potassium by adsorbing and storing potassium ions. These components jointly promote the sandy soil's ability to retain potassium through multiple mechanisms such as physical adsorption, chemical chelation, soil structure improvement, and pH regulation. The improved coconut potash fertilizer with potassium stabilization effect improved by organic mixing has good water absorption and water retention performance and prevents loss, and can be used for potassium retention in sandy soil and / or promoting effective potassium absorption and utilization.

[0009] Exemplarily, the improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials by weight: 800 parts of humic acid, 1500 parts of organic mixed fertilizer, 500 parts of plant ash, 2 parts of organic fertilizer decomposition agent, 100 parts of magnesium oxide powder, 400 parts of potash fertilizer and 400 parts of ammonium fertilizer;

[0010] The organic mixed fertilizer is a decomposed organic mixed fertilizer composed of livestock excrement and fresh plant branches and leaves.

[0011] Exemplarily, the improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials by weight: 900 parts of humic acid, 1800 parts of organic mixed fertilizer, 650 parts of plant ash, 3 parts of organic fertilizer decomposition agent, 200 parts of magnesium oxide powder, 440 parts of potash fertilizer and 440 parts of ammonium fertilizer;

[0012] The organic mixed fertilizer is a decomposed organic mixed fertilizer composed of livestock excrement and fresh plant branches and leaves.

[0013] Exemplarily, the improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials by weight: 1000 parts of humic acid, 2000 parts of organic mixed fertilizer, 800 parts of plant ash, 4 parts of organic fertilizer decomposition agent, 250 parts of magnesium oxide powder, 480 parts of potash fertilizer and 480 parts of ammonium fertilizer;

[0014] The organic mixed fertilizer is a decomposed organic mixed fertilizer made from livestock excrement and fresh plant branches and leaves.

[0015] The organic fertilizer decomposing agent comprises Bacillus amyloliquefaciens, Paenibacillus gelatinus and Aspergillus niger.

[0016] The mass ratio of the livestock manure to the fresh plant branches and leaves is 1:1.

[0017] Exemplarily, the potash fertilizer is potassium sulfate; and the ammonium fertilizer is monoammonium phosphate.

[0018] The preparation method of the organic mixed fertilizer is as follows: fresh plant branches and leaves are crushed to 2-3 cm, livestock manure and crushed fresh plant branches and leaves are mixed uniformly at a mass ratio of 1:1, the mixed raw materials are piled into a strip shape, the width and height of the pile are 2 meters each, and the length is 3 meters, and the pile is covered with soil and straw to keep heat, water and fertilizer, the water content of the compost material is controlled at 60%-75%, preferably without dripping water when held by hand, during the composting process, the temperature in the pile is maintained at 50°C-70°C, the high temperature stage is maintained for 3-5 days to kill pathogens and weed seeds, the pile is turned every 3-5 days to promote ventilation and uniform fermentation, water can be added in an appropriate amount when turning the pile to maintain a suitable humidity, the color of the compost changes to dark brown or black, the texture is loose, and there is no peculiar smell, indicating that it has been decomposed (it can reach a decomposed state in 15-20 days), and after the composting is completed, it is crushed and sieved through a 20-mesh sieve to obtain the organic mixed fertilizer.

[0019] The second technical solution of the present invention:

[0020] The present invention also provides a preparation method of the improved coconut potash fertilizer with potassium stabilizing effect, comprising the steps of accurately weighing the raw materials by weight, mixing humic acid, organic mixed fertilizer and plant ash, turning over and tossing for the first time, adding an organic fertilizer composting agent after stirring evenly, turning over and tossing for the second time, composting, adding magnesium oxide powder, potash fertilizer and ammonium fertilizer after composting for 30 to 40 days, stirring evenly, and obtaining the improved coconut potash fertilizer with potassium stabilizing effect.

[0021] During the composting, the pile is turned every 6 days.

[0022] The first flipping is performed 4 to 5 times; and / or

[0023] The second flipping is performed 2 to 3 times.

[0024] The third technical solution of the present invention:

[0025] The present invention also provides the use of the improved coconut potash fertilizer with potassium stabilization effect in retaining potassium in sandy soil and / or promoting effective potassium absorption.

[0026] Humic acid contains rich functional groups and can combine with potassium ions to form potassium humate. This compound has good slow-release properties, can reduce the loss of potassium in sandy soil, and prevent the soil from fixing potassium; plant ash itself is rich in potassium, and potassium exists in a fast-acting state, which can be quickly absorbed and utilized by plants; magnesium oxide powder can adjust the soil pH, improve soil structure, and reduce the loss of potassium ions; organic mixed fertilizers and humic acid can increase the organic matter content in the soil, improve the soil aggregate structure, and enhance the soil's ability to retain water and fertilizer. Humic acid can stimulate the growth of crop roots, enhance the root system's ability to absorb nutrients, and thus promote the growth of coconut trees. Potassium fertilizer is one of the key nutrients for coconut growth. The improved potassium fertilizer of the present invention can more effectively meet the coconut tree's demand for potassium in the fruit enlargement and sweetening stages. Potassium humate not only improves the utilization rate of potassium fertilizer, but also has slow-release properties, can continuously release potassium ions, and avoids nutrient waste. Organic fertilizer decomposition agents can accelerate the composting process, making the nutrients in the fertilizer more easily absorbed by plants. Through the synergistic effect of humic acid and magnesium oxide powder, the loss of potash fertilizer in leaching soil is reduced, and the pollution to the environment is reduced. The improved coconut potash fertilizer of the present invention combines organic and inorganic components, realizes the balanced supply of nutrients such as nitrogen, phosphorus, and potassium, and contributes to the long-term health of the soil. Humic acid can also enhance the stress resistance of crops, such as resistance to salt stress, resistance to low temperature, etc., thereby improving the growth performance of coconut trees under adverse environmental conditions.

[0027] Compared with the prior art, the present invention has the following advantages and technical effects:

[0028] The improved coconut potash fertilizer with potassium stabilization effect of the present invention improves the performance of potash fertilizer products and reduces the loss cost of potash fertilizer; secondly, it gives the potash fertilizer potassium stabilization effect and expands its application prospects. The application of simple potash fertilizers such as potassium sulfate is easy to lose, which is more serious in sandy soil and is not easily completely absorbed and utilized by coconuts, affecting the growth of coconuts. In addition, the cost of potash fertilizer is relatively high, and continuous large-scale application will increase the cost and cause local pollution.

[0029] The improved coconut potash fertilizer with potassium stabilization prepared by the present invention is loose in performance and more suitable for improving soil structure, organic matter and nutrients by combining humic acid, organic mixed fertilizer and plant ash as fillers with potash fertilizer; and by adding magnesium oxide powder, the performance of stabilizing soil potassium can be enhanced, the loss of soil potassium can be reduced, and the absorption and utilization of potassium by coconut can be promoted, which not only saves potash fertilizer resources, but also improves the effectiveness of soil potash fertilizer.

[0030] The improved coconut potash fertilizer with potassium stabilization effect of the present invention has the effects of significantly increasing crop yield and reducing soil potassium loss after application, and can also reduce the cost of potash fertilizer application and protect the agricultural ecological environment, which is economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 Actual picture before fertilizing young coconut trees;

[0033] Figure 2 The actual picture after 6 months of fertilizing young coconut trees (the improved coconut potash fertilizer with potassium stabilization effect in Example 2);

[0034] Figure 3 Actual picture before fertilizing old coconut trees;

[0035] Figure 4 A photo of the older coconut trees after fertilizing them with the improved coconut potash fertilizer with potassium stabilization effect in Example 2 for 6 months. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0037] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0038] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0039] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present invention description and examples are exemplary only.

[0040] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0041] The embodiment of the present invention provides an improved coconut potash fertilizer with potassium stabilization effect, which is composed of the following raw materials in parts by weight: 800-1000 parts of humic acid, 1500-2000 parts of organic mixed fertilizer, 500-800 parts of plant ash, 2-4 parts of organic fertilizer decomposition agent, 100-250 parts of magnesium oxide powder, 400-480 parts of potash fertilizer and 400-480 parts of ammonium fertilizer;

[0042] Organic mixed fertilizer is a decomposed organic mixed fertilizer composed of livestock manure and fresh plant branches and leaves.

[0043] Sandy soil has a loose texture and poor fertilizer retention capacity, and potassium is easily lost with water. Humic acid contains rich functional groups that can adsorb and store potassium ions to prevent them from being lost with water. In addition, humic acid can prevent potassium from being fixed by the soil through chelation, thereby improving the utilization rate of potassium; the decomposed organic mixed fertilizer composed of livestock manure and fresh plant branches and leaves can increase the organic matter content in the soil and improve the soil aggregate structure, thereby improving the soil's ability to retain water and fertilizer. The humic acid produced during the decomposition process can also adsorb and store potassium ions, reducing the loss of potassium. Plant ash is rich in potassium salts, and potassium exists in a fast-acting state, which can be quickly absorbed and utilized by plants; organic fertilizer composting agents can accelerate the composting process of organic materials and promote the decomposition of organic matter into effective components such as humic acid, which can adsorb and store potassium ions, improve soil structure, and enhance the soil's ability to retain fertilizer; magnesium oxide powder can adjust soil pH, improve soil physical and chemical properties, and reduce the loss of potassium ions; potassium fertilizer directly supplements potassium in the soil, while ammonium fertilizer can improve the soil's cation exchange capacity and enhance the soil's ability to adsorb potassium ions. Ammonium fertilizer can also indirectly improve the utilization rate of potassium in the soil by promoting plant growth. In short, humic acid and organic mixed fertilizers can increase the organic matter content in the soil, improve the soil's aggregate structure, enhance the soil's ability to retain water and fertilizer, and reduce the loss of potassium by adsorbing and storing potassium ions. These components jointly promote the sandy soil's ability to retain potassium through multiple mechanisms such as physical adsorption, chemical chelation, soil structure improvement, and pH regulation. The improved coconut potash fertilizer with potassium stabilization effect improved by organic mixing has good water absorption and water retention performance and prevents loss, and can be used for potassium retention in sandy soil and / or promoting effective potassium absorption and utilization.

[0044] In some embodiments of the present invention, the improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials by weight: 800 parts of humic acid, 1500 parts of organic mixed fertilizer, 500 parts of plant ash, 2 parts of organic fertilizer decomposition agent, 100 parts of magnesium oxide powder, 400 parts of potash fertilizer and 400 parts of ammonium fertilizer;

[0045] Organic mixed fertilizer is a decomposed organic mixed fertilizer made from livestock manure and fresh plant branches and leaves in a mass ratio of 1:1.

[0046] In some embodiments of the present invention, the improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials by weight: 900 parts of humic acid, 1800 parts of organic mixed fertilizer, 650 parts of plant ash, 3 parts of organic fertilizer decomposition agent, 200 parts of magnesium oxide powder, 440 parts of potash fertilizer and 440 parts of ammonium fertilizer;

[0047] Organic mixed fertilizer is a decomposed organic mixed fertilizer composed of livestock manure and fresh plant branches and leaves in a mass ratio of 1:1.

[0048] In some embodiments of the present invention, the improved coconut potash fertilizer with potassium stabilization effect is composed of the following raw materials by weight: 1000 parts of humic acid, 2000 parts of organic mixed fertilizer, 800 parts of plant ash, 4 parts of organic fertilizer decomposition agent, 250 parts of magnesium oxide powder, 480 parts of potash fertilizer and 480 parts of ammonium fertilizer;

[0049] Organic mixed fertilizer is a decomposed organic mixed fertilizer composed of livestock manure and fresh plant branches and leaves in a mass ratio of 1:1.

[0050] In an embodiment of the present invention, the organic fertilizer decomposing agent includes Bacillus amyloliquefaciens, Paenibacillus gelatinosa and Aspergillus niger.

[0051] In some embodiments of the present invention, the potash fertilizer is potassium sulfate; and the ammonium fertilizer is monoammonium phosphate.

[0052] In some embodiments of the present invention, the preparation method of organic mixed fertilizer is as follows: fresh plant branches and leaves are crushed to 2 to 3 cm, livestock manure and crushed fresh plant branches and leaves are mixed uniformly in a mass ratio of 1:1, the mixed raw materials are piled into a strip shape, the width and height of the pile are 2 meters each, and the length is 3 meters, and it is covered with soil and straw to keep warm, retain water, and retain fertilizer. The moisture content of the compost material is controlled at 60% to 75%, preferably without dripping water when held by hand. During the composting process, the temperature in the pile is maintained at 50°C to 70°C, and the high temperature stage is maintained for 3 to 5 days to kill pathogens and weed seeds. The pile is turned every 3 to 5 days to promote ventilation and uniform fermentation. When turning the pile, water can be added in an appropriate amount to maintain an appropriate humidity. The color of the compost becomes dark brown or black, the texture is loose, and there is no odor, indicating that it has been decomposed (it can reach a decomposed state in 15 to 20 days). After the composting is completed, it is crushed through a 20-mesh sieve to obtain an organic mixed fertilizer.

[0053] In some embodiments of the present invention, the preparation method of the improved coconut potash fertilizer with potassium stabilization effect is as follows: the raw materials are accurately weighed by weight, humic acid, organic mixed fertilizer and wood ash are mixed, turned over 4 to 5 times, and organic fertilizer is added after stirring evenly. After turning over 2 to 3 times, composting is carried out, and the compost is turned over every 6 days. After composting for 30 to 40 days, magnesium oxide powder, potassium fertilizer and ammonium fertilizer are added, and stirred evenly to obtain the improved coconut potash fertilizer with potassium stabilization effect.

[0054] The improved coconut potash fertilizer with potassium stabilization effect provided by the embodiment of the present invention can be used for potassium conservation in sandy soil and / or promoting effective potassium absorption.

[0055] When applying the improved coconut potash fertilizer with potassium stabilization effect of the present invention, a 50 cm deep and 30 cm wide circular ditch is dug at the drip level of the coconut tree crown, the improved coconut potash fertilizer with potassium stabilization effect is spread in the fertilizer ditch, and then covered with soil to make it 3-5 cm below the ground surface, and the application amount is 5 kg / each plant.

[0056] Humic acid contains rich functional groups and can combine with potassium ions to form potassium humate. This compound has good slow-release properties, can reduce the loss of potassium in sandy soil, and prevent the soil from fixing potassium; plant ash itself is rich in potassium, and potassium exists in a fast-acting state, which can be quickly absorbed and utilized by plants; magnesium oxide powder can adjust the soil pH, improve soil structure, and reduce the loss of potassium ions; organic mixed fertilizers and humic acid can increase the organic matter content in the soil, improve the soil aggregate structure, and enhance the soil's ability to retain water and fertilizer. Humic acid can stimulate the growth of crop roots, enhance the root system's ability to absorb nutrients, and thus promote the growth of coconut trees. Potassium fertilizer is one of the key nutrients for coconut growth. The improved potassium fertilizer of the present invention can more effectively meet the coconut tree's demand for potassium in the fruit enlargement and sweetening stages. Potassium humate not only improves the utilization rate of potassium fertilizer, but also has slow-release properties, can continuously release potassium ions, and avoids nutrient waste. Organic fertilizer decomposition agents can accelerate the composting process, making the nutrients in the fertilizer more easily absorbed by plants. Through the synergistic effect of humic acid and magnesium oxide powder, the loss of potash fertilizer in leaching soil is reduced, and the pollution to the environment is reduced. The improved coconut potash fertilizer of the present invention combines organic and inorganic components, realizes the balanced supply of nutrients such as nitrogen, phosphorus, and potassium, and contributes to the long-term health of the soil. Humic acid can also enhance the stress resistance of crops, such as resistance to salt stress, resistance to low temperature, etc., thereby improving the growth performance of coconut trees under adverse environmental conditions.

[0057] "Coconut tree head" refers to the top part of the coconut tree, including the crown and the top leaves.

[0058] Unless otherwise specified, the room temperature in the present invention is 25±2°C.

[0059] All raw materials used in the embodiments and comparative examples of the present invention are commercially available. As an example, the organic fertilizer decomposition agent is Yu Qi Fu purchased from Henan Nongfukang Biotechnology, which contains metabolites such as Bacillus amyloliquefaciens, Paenibacillus jelly-like, and Aspergillus niger; monoammonium phosphate is purchased from Henan Hongjia Chemical Products Co., Ltd.; humic acid is Jiucheng Plant Materials purchased from Dalian Jiucheng Commodity Co., Ltd.; plant ash is a material that is sieved through a 60-mesh sieve after drying corn stalks and weeds are burned; and magnesium oxide powder is purchased from Hebei Meixi Biological Co., Ltd.

[0060] Unless otherwise specified, the “parts” used in the examples and comparative examples of the present invention are “parts by weight”.

[0061] It should be pointed out that the matters not described in detail in the present invention are conventional operating means in the art and are not the focus of the present invention.

[0062] The technical solution of the present invention is further illustrated by the following embodiments.

[0063] Example 1

[0064] Preparation of organic mixed fertilizer: crush fresh plant branches and leaves into 2-3 cm, mix animal manure and crushed fresh plant branches and leaves in a mass ratio of 1:1, pile the mixed raw materials into a strip pile with a width and height of 2 meters and a length of 3 meters, cover with soil and straw to keep heat, water and fertilizer, control the moisture content of the compost material to 60%-75%, preferably without dripping water when held by hand, keep the temperature in the pile at 60±5℃ during the composting process, maintain the high temperature stage for 3 days to kill pathogens and weed seeds, turn the pile every 3 days to promote ventilation and uniform fermentation, add water in an appropriate amount when turning the pile to maintain appropriate humidity, and crush and pass through a 20-mesh sieve after 18 days of composting to obtain organic mixed fertilizer.

[0065] Preparation of improved coconut potash fertilizer with potassium stabilizing effect: 800 parts of humic acid, 1500 parts of organic mixed fertilizer and 500 parts of wood ash are mixed, turned over 4 times, and after stirring evenly, 2 parts of organic fertilizer decomposition agent are added, and the mixture is turned over 2 more times before composting. The compost is turned over every 6 days. After composting for 35 days, 100 parts of magnesium oxide powder, 400 parts of potash fertilizer (potassium sulfate) and 400 parts of ammonium fertilizer (monoammonium phosphate) are added, and the mixture is stirred evenly to obtain improved coconut potash fertilizer with potassium stabilizing effect.

[0066] Dig a 50cm deep and 30cm wide circular ditch at the drip level of the coconut tree crown, spread the improved coconut potash fertilizer with potassium stabilization effect in the fertilizer ditch, and then cover it with soil to make it 4cm below the ground surface. The application rate is 5kg per plant.

[0067] Example 2

[0068] The preparation method of organic mixed fertilizer is the same as that in Example 1.

[0069] Preparation of improved coconut potash fertilizer with potassium stabilizing effect: 900 parts of humic acid, 1800 parts of organic mixed fertilizer and 650 parts of wood ash are mixed, turned over 4 times, and after stirring evenly, 3 parts of organic fertilizer decomposition agent are added, and the mixture is turned over 2 more times before composting. The compost is turned over every 6 days. After composting for 35 days, 200 parts of magnesium oxide powder, 440 parts of potash fertilizer (potassium sulfate) and 440 parts of ammonium fertilizer (monoammonium phosphate) are added, and the mixture is stirred evenly to obtain improved coconut potash fertilizer with potassium stabilizing effect.

[0070] The fertilization method is the same as in Example 1.

[0071] Example 3

[0072] The preparation method of organic mixed fertilizer is the same as that in Example 1.

[0073] Preparation of improved coconut potash fertilizer with potassium stabilizing effect: 1000 parts of humic acid, 2000 parts of organic mixed fertilizer and 800 parts of wood ash are mixed, turned over 4 times, and after stirring evenly, 4 parts of organic fertilizer decomposition agent are added, and the mixture is turned over 2 more times before composting. The compost is turned over every 6 days. After composting for 35 days, 250 parts of magnesium oxide powder, 480 parts of potash fertilizer (potassium sulfate) and 480 parts of ammonium fertilizer (monoammonium phosphate) are added, and the mixture is stirred evenly to obtain improved coconut potash fertilizer with potassium stabilizing effect.

[0074] The fertilization method is the same as in Example 1.

[0075] Comparative Example 1

[0076] The preparation method of organic mixed fertilizer is the same as that in Example 1.

[0077] Preparation of improved coconut potash fertilizer: Mix 1000 parts of humic acid, 2000 parts of organic mixed fertilizer and 800 parts of wood ash, turn them over 4 times, stir them evenly, add 4 parts of organic fertilizer composting agent, continue to turn them over 2 times and then compost, turn the pile every 6 days, add 480 parts of potash fertilizer (potassium sulfate) and 480 parts of ammonium fertilizer (monoammonium phosphate) after composting for 35 days, stir them evenly, and you will get improved coconut potash fertilizer.

[0078] The fertilization method is the same as in Example 1.

[0079] Application Example 1: Field test of young coconut:

[0080] A 2-year-old red dwarf coconut (Wen Ye No. 3) was used as the test crop, and a field test was carried out in Baofang Town, Wenchang City, Hainan Province. The soil was coastal sandy soil. According to NY / T3034-2016 and soil agrochemical analysis (Bao Shidan, 2000), organic matter, pH, alkaline nitrogen, available phosphorus, soil total potassium (K) and available potassium content were determined. Soil pH = 5.5, organic matter 3.6g / kg, alkaline nitrogen 44.7mg / kg, available phosphorus 50.1mg / kg, soil total potassium 0.98g / kg, available potassium 30.83mg / kg, plant height (vertical distance from coconut base to the top of the highest leaf) 120cm, leaf width 60cm, leaf length 12cm, leaf potassium content 6.12%. The experimental treatments were Examples 1 to 3 and Comparative Example 1, and the control treatment was only potassium sulfate (the amount of potassium sulfate was the same as that of potassium sulfate in Example 1) fertilizer, without other improved materials). Three months after the fertilizer application test, the coconut growth index was measured and the samples were collected to detect the nutritional index. The results of the composition analysis of the improved coconut potassium fertilizer of Examples 1 to 3, Comparative Example 1 and the potassium fertilizer of the control group (according to the NY / T3034-2016 standard) are shown in Table 1, and the field test effects after applying each group of potassium fertilizers are shown in Table 2.

[0081] Table 1 Component analysis results of improved coconut potassium fertilizer and control group

[0082]

[0083] Table 2 Effect of improved coconut potassium fertilizer on young coconut field test

[0084]

[0085]

[0086] Coconut is a woody economic crop that grows relatively slowly. Compared with the control group, the application of the soil-improving potash fertilizer prepared by the present invention (Examples 1 to 3) on the tested coastal sand soil can increase the coconut plant height by 10 to 15 cm, the leaf length by 7 to 12 cm, the leaf width by 2 to 3 cm, and significantly increase the total potassium and available potassium in the soil. Compared with Examples 1 to 3, the coconut growth (plant height, leaf length, leaf width) and the coconut yield increase of Comparative Example 1 decreased, and the total potassium and available potassium content in the soil decreased, which may be due to the lack of the improvement effect of magnesium oxide in potash fertilizer in Comparative Example 1. This also shows that the soil-improving potash fertilizer products of Examples 1 to 3 have a significant effect on improving sandy soil fertility, stabilizing soil potassium, and improving potassium effectiveness and utilization rate.

[0087] Application Example 2: Field test of old coconut:

[0088] A field test was conducted in Baofang Town, Wenchang City, Hainan Province, using 7-year-old red dwarf coconut (Wen Ye No. 3) as the test crop. The soil was coastal sandy soil with basic physical and chemical properties of pH = 5.9, organic matter 6.5g / kg, alkaline nitrogen 60.56mg / kg, available phosphorus 26.58mg / kg, soil total potassium 1.05g / kg, and available potassium 68.78mg / kg. The plant stem height (the distance from the base of the coconut tree to the oldest green leaf stem mark) was 30cm, the stem circumference was 35cm, the flower spikes were 2, the fruit set was 8, and the leaf potassium content was 6.89%. The coconut growth index and the sample collection nutrition index were measured 3 months after the fertilizer application test was completed (refer to soil agrochemical analysis, Bao Shidan, 2000). The field test results are shown in Table 3.

[0089] Table 3 Effect of improved potassium fertilizer on field test of old coconut

[0090]

[0091] Compared with the control group, the application of the soil-improving potash fertilizer prepared by the present invention (Examples 1 to 3) on the tested coastal sand soil can increase the height of the coconut stem by 6 to 10 cm, increase the stem circumference by 4 to 7 cm, increase the number of flower spikes by 3 spikes, and increase the number of fruits by 17 to 27. This increase is very significant on the economic crop coconut. And significantly increase the total potassium and available potassium in the soil. Compared with Examples 1 to 3, the growth of coconut in Comparative Example 1 and its coconut yield increase decreased, and the total potassium and available potassium content in the soil decreased. This may be because the improvement effect of magnesium oxide in potash fertilizer is lacking in Comparative Example 1. This also shows that the soil-improving potash fertilizer products of Examples 1 to 3 have a significant effect on improving sandy soil fertility, stabilizing soil potassium, and improving potassium effectiveness and utilization.

[0092] The actual picture of young coconut trees before fertilization Figure 1 As shown, the actual picture of the young coconut trees after 6 months of fertilization (the improved coconut potash fertilizer with potassium stabilization effect in Example 2) is as follows Figure 2 As shown, it can be known that the application of the improved coconut potash fertilizer with potassium stabilization effect of the present invention can promote the growth of coconuts and increase the yield of coconuts.

[0093] The actual picture of the old coconut tree before fertilization Figure 3 As shown, the actual picture of the old coconut trees after 6 months of fertilization (the improved coconut potash fertilizer with potassium stabilization effect in Example 2) is as follows Figure 4 As shown, it can be known that the application of the improved coconut potash fertilizer with potassium stabilization effect of the present invention can promote the growth of coconuts and increase the yield of coconuts.

[0094] In summary, simple potash fertilizers such as potassium sulfate or potassium chloride are easy to lose, which is more serious in sandy soil. They are not easily absorbed and utilized by coconuts, which affects the growth of coconuts. Moreover, the cost of simply applying potash fertilizers is relatively high. Continuously increasing the application in large quantities will increase the cost and cause local pollution. The improved coconut potash fertilizer with potassium stabilization provided by the present invention can improve the performance of potash fertilizer products and reduce the cost of potash fertilizer loss; secondly, it is endowed with potassium stabilization, which expands its application prospects and does not cause environmental pollution.

[0095] The improved coconut potash fertilizer prepared by the present invention using humic acid, organic mixed fertilizer and plant ash as fillers has loose performance and is more suitable for improving soil structure, improving organic matter and nutrients; and by adding magnesium oxide powder, the performance of stabilizing soil potassium can be enhanced, the loss of soil potassium can be reduced, and the coconut can be promoted to absorb and utilize potassium. It can save potash fertilizer resources and improve the effectiveness of soil potash fertilizer.

[0096] After applying the improved coconut potash fertilizer with potassium stabilization effect of the present invention, crop yield can be significantly increased, soil potassium loss can be reduced, and the cost of potash fertilizer application can be reduced, thereby achieving the effect of protecting the agricultural ecological environment and being economical and environmentally friendly.

[0097] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An improved coconut potash fertilizer with potassium stabilization effect, characterized in that: The invention is composed of the following raw materials in parts by weight: 800-1000 parts of humic acid, 1500-2000 parts of organic mixed fertilizer, 500-800 parts of plant ash, 2-4 parts of organic fertilizer decomposition agent, 100-250 parts of magnesium oxide powder, 400-480 parts of potash fertilizer and 400-480 parts of ammonium fertilizer; The organic mixed fertilizer is a decomposed organic mixed fertilizer made from livestock excrement and fresh plant branches and leaves.

2. The improved coconut potash fertilizer with potassium stabilization effect according to claim 1, characterized in that: The composition is composed of the following raw materials in parts by weight: 800 parts of humic acid, 1500 parts of organic mixed fertilizer, 500 parts of wood ash, 2 parts of organic fertilizer composting agent, 100 parts of magnesium oxide powder, 400 parts of potassium fertilizer and 400 parts of ammonium fertilizer.

3. The improved coconut potash fertilizer with potassium stabilization effect according to claim 1, characterized in that: Calculated by weight, it is composed of the following raw materials: 900 parts of humic acid, 1800 parts of organic mixed fertilizer, 650 parts of wood ash, 3 parts of organic fertilizer composting agent, 200 parts of magnesium oxide powder, 440 parts of potassium fertilizer and 440 parts of ammonium fertilizer.

4. The improved coconut potash fertilizer with potassium stabilization effect according to claim 1, characterized in that: Calculated by weight, it is composed of the following raw materials: 1000 parts of humic acid, 2000 parts of organic mixed fertilizer, 800 parts of wood ash, 4 parts of organic fertilizer composting agent, 250 parts of magnesium oxide powder, 480 parts of potassium fertilizer and 480 parts of ammonium fertilizer.

5. The improved coconut potash fertilizer with potassium stabilization effect according to claim 1, characterized in that: The organic fertilizer decomposing agent comprises Bacillus amyloliquefaciens, Paenibacillus gelatinus and Aspergillus niger.

6. The improved coconut potash fertilizer with potassium stabilization effect according to claim 1, characterized in that: The mass ratio of the livestock manure to the fresh plant branches and leaves is 1:

1.

7. A method for preparing the improved coconut potash fertilizer with potassium stabilization effect according to any one of claims 1 to 6, characterized in that: Accurately weigh the raw materials according to their weight, mix humic acid, organic mixed fertilizer and wood ash, turn them over for the first time, add organic fertilizer composting agent after stirring evenly, turn them over for the second time and compost, add magnesium oxide powder, potassium fertilizer and ammonium fertilizer after composting for 30 to 40 days, stir evenly, and the improved coconut potash fertilizer with potassium stabilizing effect is obtained.

8. The method for preparing the improved coconut potash fertilizer with potassium stabilization according to claim 7, characterized in that: During the composting, the pile is turned every 6 days.

9. The method for preparing the improved coconut potash fertilizer with potassium stabilization according to claim 7, characterized in that: The first flipping is performed 4 to 5 times; and / or The second flipping is performed 2 to 3 times.

10. Use of the improved coconut potash fertilizer with potassium stabilization effect according to any one of claims 1 to 6 in retaining potassium in sandy soil and / or promoting effective potassium absorption.

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