Fertilizer for apocynum venetum and application

Abstract

The invention discloses a fertilizer for apocynum venetum and application thereof, belongs to the field of fertilizers, and aims to increase the strontium content in apocynum venetum leaves and enable the apocynum venetum to have a better health-care effect. The high-temperature-resistant and corrosion-resistant material is prepared from the following raw materials: ammonium dihydrogen phosphate, pyroligneous liquor, EDTA (Ethylene Diamine Tetraacetic Acid), strontium chloride and water. The mass percentage of the pyroligneous liquor is 32-43 wt%, and the weight part ratio of the ammonium dihydrogen phosphate to the pyroligneous liquor to the EDTA to the strontium chloride is as follows: 8-20 parts of the ammonium dihydrogen phosphate, 1-4 parts of the pyroligneous liquor, 1-4 parts of the EDTA and 1 part of the strontium chloride; the sum of the mass of the ammonium dihydrogen phosphate, the wood vinegar, the EDTA and the strontium chloride is 45%-60% of that of the fertilizer for the apocynum venetum. According to the method, the strontium organic chelating agent is sprayed on leaf surfaces, biochemical reaction is carried out in apocynum venetum plants, and the strontium content of apocynum venetum can reach 2.5-10 mg / kg and is 2-10 times that of apocynum venetum in a strontium-deficient ecological environment. Furthermore, the apocynum venetum tea is prepared from apocynum venetum leaves, and the limit of strontium in the apocynum venetum tea meets the limit hygienic standard (DB52 / T1219-2017) of strontium in tea.

Description

Technical Field

[0001] The present application relates to the field of fertilizers, and in particular to a fertilizer for Lophatherum foetida and its application. Background Art

[0002] Apocynum venetum Apocynum venetum L.) is a perennial herbaceous plant of the Apocynaceae family, widely distributed in Northwest, North China, East China and Northeast my country, growing in saline-alkali wasteland, desert edges and both sides of rivers. The roots, stems, leaves and flowers of Apocynum venetum can be used as medicine, with the effects of clearing away heat and promoting diuresis, calming the liver, and calming the nerves, and can also be used for the treatment of hypertension, dizziness, palpitations, insomnia and other diseases. Apocynum venetum has been included in the Pharmacopoeia of the People's Republic of China in 1977, 1985 and 1990. At the same time, Apocynum venetum has special ecological characteristics such as salt-alkali resistance and drought resistance, and plays an important role in desert control. Therefore, Apocynum venetum, as a wild economic crop species with high economic value in the fields of textile, papermaking and medicine, has broad development prospects.

[0003] At present, people have conducted corresponding research on the cultivation of Apocynum venetum. For example, Chinese patent application CN201010250900.3 discloses a large-scale cultivation method of Apocynum venetum in saline-alkali desert, which includes the following steps: seed screening, nutrient cup preparation, greenhouse facilities, sowing period, sowing amount, seedling management, nursery transplanting, nursery field management and field transplanting.

[0004] Chinese patent application CN201110159153.7 discloses a method for raising and planting apocynum venetum, the steps of which are as follows: applying decomposed cow dung and sheep dung to farmland soil at a weight ratio of 10:1-3, adding 10-40% compound fertilizer solution containing N, P and K, and stirring to form a viscous culture medium; placing the culture medium in a seedling bag made of non-woven fabric made of crushed crop straw, soaking apocynum venetum seeds in 40°C water for 20 minutes, and then immersing the seeds in 0.02-0.05wt% NaOH solution or CuSO 4 Soak in the solution for 12 hours, remove the seeds and drain them, put them into seedling bags, 2-4 seeds per bag, and culture them at 15-20℃ for 2-4 days. The germination rate is ≥95%. After the hemp seedlings grow to 8 pairs of true leaves, they are transplanted and planted.

[0005] Chinese patent application CN201710505151.6 discloses a method for cultivating Lophatherum venetum suitable for heavily saline-alkali areas. The method overcomes the shortcomings of the prior art by adopting a series of technical means such as nutrient soil preparation, water selection, sowing, water spraying, fertilizing, planting with soil, and drip irrigation. The seed germination rate is as high as 92.5%, and the survival rate of the seedlings after transplanting to the field is as high as 95.6%. The sowing and planting of Lophatherum venetum in heavily saline-alkali areas can be achieved in the same year, which effectively shortens the seedling planting period.

[0006] Chinese patent application CN202310099475.X discloses a method for cultivating a Lophatherum ramie field in saline-alkali soil combined with natural community restoration. According to the growth characteristics of taproot and lateral root of Lophatherum ramie, seedlings are dug in natural distribution zones, trenches are opened, organic materials are buried, and drip irrigation is performed under the film to induce new plants with upright rhizomes; the degraded patches and bare land are directionally induced to grow lateral rhizomes towards water and fertilizer, and the vegetation coverage is restored in a radial pattern from high to low according to the terrain; wild Lophatherum ramie plants are introduced and thinned out in saline-alkali soil, and drip irrigation is adopted under a double-layer film to dilute the root zone with salt, thereby providing conditions for warming, weeding, preventing rhizome growth, controlling density, and reducing diseases; fertilizer is accumulated between the films to lay a material foundation for reducing salt and improving soil, providing an organic fertilizer source, and ensuring product quality, thus building a stable hemp field.

[0007] Chinese patent application CN201510389219.X discloses a method for improving the planting area of ​​​​Lophatherum venetum plants and its special organic fertilizer and production method. The method inoculates sunflower seed meal with corresponding beneficial microorganisms for fermentation, extracts amino acid liquid, and prepares liquid fertilizer that can be directly drip-irrigated to the field. Through drip irrigation or sprinkling of organic amino acid liquid fertilizer, while effectively supplementing crops with a large amount of organic nutrients and beneficial microbial metabolites, the permeability of the soil is improved.

[0008] Chinese patent application CN200610017217.9 discloses a method for restoring saline-alkali land vegetation using apocynum venetum paper tube seedling propagation technology. The method utilizes paper tube seedling propagation technology based on the germination and seedling growth rules of apocynum venetum seeds to meet the conditions required for the germination and seedling growth of apocynum venetum seeds, thereby achieving the purpose of successfully breeding apocynum venetum seedlings.

[0009] Chinese patent application CN201310518704.3 discloses a micro-fertilizer for Apocynum venetum and a preparation method thereof, the micro-fertilizer is made of lithium chloride, disodium ethylenediaminetetraacetic acid, citric acid, urea and boric acid. Urea is dissolved in water and then boric acid is added, stirred to obtain liquid A, then disodium ethylenediaminetetraacetic acid is dissolved in water and lithium chloride is added to react to obtain liquid B, then liquid A and liquid B are mixed, citric acid is added and stirred evenly, and the final product, micro-fertilizer for Apocynum venetum, is obtained. The product has been tested by foliar spraying and root application, and the effect of foliar spraying is that the average total leaf dry weight per plant of Apocynum venetum is 2.25 times; the average total leaf area per plant of Apocynum venetum is 1.7 times.

[0010] Studies have shown that Apocynum venetum has a special need for trace elements that is different from other plants. General universal trace fertilizers cannot effectively meet this need for trace elements in Apocynum venetum, and there is no special trace fertilizer for Apocynum venetum in existing patents and literature. How to effectively increase the content of certain functional trace elements in Apocynum venetum has become a technical problem that urgently needs to be solved. Summary of the invention

[0011] The invention object of the present application is to provide a fertilizer for Apocynum venetum and its application, with the purpose of increasing the strontium content in Apocynum venetum leaves so that Apocynum venetum has better health care effects.

[0012] In order to achieve the above purpose, this application adopts the following technical solutions: A fertilizer for apocynum venetum is prepared from the following raw materials: diammonium phosphate, wood vinegar, EDTA, strontium chloride, and water; The mass percentage of the wood vinegar is 32-43wt%, and the weight proportions of the ammonium dihydrogen phosphate, wood vinegar, EDTA, and strontium chloride are as follows: 8-20 parts of ammonium dihydrogen phosphate, 1-4 parts of wood vinegar, 1-4 parts of EDTA, and 1 part of strontium chloride; The sum of the mass of the ammonium dihydrogen phosphate, wood vinegar, EDTA and strontium chloride is 45% to 60% of the fertilizer for apocynum venetum.

[0013] It is prepared by the following steps: (a) Preparation of intermediate solution A Add ammonium dihydrogen phosphate to the first reaction kettle, add some water, and stir to make the ammonium dihydrogen phosphate and water miscible; then, add wood vinegar to the first reaction kettle, stir at 20°C-80°C for 0.2-4h to obtain intermediate A liquid; (b) Preparation of intermediate solution B Add EDTA to the first reaction kettle, add the remaining water, and stir to make EDTA and water miscible; then, add strontium chloride to the second reaction kettle, react at 30°C-80°C for 0.2-4h to obtain intermediate B solution; (c) Preparation of finished products After mixing the intermediate liquid A with the intermediate liquid B, stir them thoroughly and evenly to obtain the fertilizer for Apocynum venetum.

[0014] The application of the above-mentioned fertilizer for Apocynum venetum is to spray the fertilizer for Apocynum venetum on the leaves of Apocynum venetum.

[0015] The steps include: (1) dissolving the apocynum venetum fertilizer and water in a mass ratio of 1:2000-1:4000 to obtain a first dilution; (2) When the dogbane enters the early flowering stage, spray the first dilution on the dogbane leaves at sunset.

[0016] The dosage of Apocynum venetum per mu is 10~30g.

[0017] The following steps are also included: (3) After the apocynum venetum enters the flowering period, the apocynum venetum leaves are picked; and the picked apocynum venetum leaves are withered and rolled to make apocynum venetum tea rich in organic strontium.

[0018] The strontium content of organic strontium-rich Luobu Ma tea is 2.5-10 mg / kg.

[0019] Strontium (Sr) is an alkaline earth metal element and belongs to the same main group as calcium. It ranks 15th in the abundance of elements in the earth's crust and is one of the 14 trace elements necessary for the human body. Strontium is contained in the air we breathe, the food we eat, and the water we drink. Food and drinking water are the largest sources of strontium. Strontium in the environment will be enriched in plants and animals through bioaccumulation and eventually enter the human body. The normal human body contains about 320 mg of strontium, most of which is distributed in the human bones, and the rest is in the human hair, blood, and muscles. For ordinary people, food is the main source of strontium. In addition, a small amount of strontium enters the human body through the skin and lungs.

[0020] In a normal human diet, 99% of the strontium ingested is deposited in the bones, resulting in about 0.035% of the calcium in the bones being replaced by strontium. For adults, the total daily strontium intake in many parts of the world is estimated to be as high as 4 mg / day, and is mainly based on water and food (drinking water is about 0.7-2 mg / day, and food (mainly leafy vegetables, grains and dairy products) is about 1.2-2.3 mg / day). From the perspective of soil enrichment, eating crops grown in areas with high strontium concentrations will also increase the daily strontium intake of the population. A large number of studies have shown that strontium chloride, strontium ranelate and strontium citrate are beneficial to bone health. For example, the strontium-containing drug strontium ranelate has the effect of inhibiting bone resorption and stimulating bone formation to a certain extent, and can promote the osteogenic differentiation of human adipose stem cells. It can also regulate the metabolism of alveolar bone through the OPG / RANKL pathway, promote bone formation, and inhibit bone resorption, thereby reducing the destruction of alveolar bone in periodontitis under diabetic conditions. The drug strontium chloride can significantly reduce the pain level of patients with tumor bone metastasis and reduce the occurrence of adverse reactions. Therefore, strontium has a good market prospect in medicine.

[0021] As mentioned above, the prior art mainly uses special micro-fertilizers composed of lithium chloride and the like, which can effectively increase the total leaf dry weight and total leaf area of ​​apocynum venetum, but does not involve the strontium content in apocynum venetum leaves.

[0022] On the other hand, existing strontium-containing fertilizers are mainly used for root fertilization. For example, Chinese patent application CN201510553347.3 discloses a humic acid plant growth nutrition high-efficiency solid fertilizer and a preparation method thereof, wherein the trace nutrient elements are any one or more of copper sulfate, magnesium sulfate, ferrous sulfate, zinc sulfate, manganese sulfate, strontium nitrate, molybdic acid, selenium dioxide and borax in any proportion.

[0023] Chinese patent application CN200610042218.9 discloses a method for preparing a light-catalyzed slow-release CO2 gas fertilizer, which consists of two parts: a base material and a light-catalyzed slow-release material, wherein the base material contains 0.0051-1 part of strontium carbonate.

[0024] Chinese patent application CN201110036472.9 discloses a strontium-containing organic microbial fertilizer and a preparation method thereof. The fertilizer is prepared from raw materials containing the following weight percentages: 0.5-5wt% of a microbial composite bacterial solution, 5-20wt% of strontium carbonate, 40-80wt% of humic acid and 5-40wt% of a desiccant.

[0025] Chinese patent application CN89104132.X discloses a method for producing strontium aluminum phosphate fertilizer, which includes the following process: crushing and drying the raw ore, directly feeding the blocks into a kiln for oxidation calcination, adding water to the powder to form a billet, and then preheating, dehydrating, and oxidizing and calcining. The oxidation calcination temperature is 700-800°C and the time is 30-60 minutes. The cooled blocks and billets are ground and sieved to 60-80 mesh to obtain the finished fertilizer.

[0026] In the above scheme, the root fertilization method is mainly adopted, the fertilizer application amount is large, and the enrichment effect of plant trace elements is limited. To this end, the present application provides a fertilizer for apocynum venetum and its application.

[0027] Different from the prior art which uses inorganic strontium fertilizer and is absorbed by plant roots, the present application proposes an organic chelating agent containing strontium as a fertilizer. The present application sprays the organic chelating agent with strontium on the leaves to carry out a biochemical reaction in the body of the apocynum plant, so that the strontium content of the apocynum can reach 2.5-10 mg / kg, which is 2 to 10 times the strontium content in a strontium-deficient ecological environment.

[0028] Furthermore, the present application uses the leaves of Apocynum venetum to prepare Apocynum venetum tea, the limit of strontium in the Apocynum venetum tea meets the limit of strontium in tea health standard (DB52 / T1219-2017), and the tea meets the limit of drinking natural mineral water (GB8537-2018) of the national food safety standard. It can be seen that the Apocynum venetum tea prepared in the present application can supplement the trace element strontium in the human body, and is a new functional tea that can achieve the purpose of preventing and treating strontium deficiency complex diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 The site for spraying fertilizer for this application Figure 1 .

[0030] Figure 2 The site for spraying fertilizer for this application Figure 2 .

[0031] Figure 3 The site for spraying fertilizer for this application Figure 3 . DETAILED DESCRIPTION

[0032] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0033] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0034] 1. Sample preparation Example 1 The steps for preparing the fertilizer for Apocynum venetum in this embodiment are as follows.

[0035] Weigh 6 kg of ammonium dihydrogen phosphate, 1 kg of wood vinegar, 1 kg of EDTA, 0.5 kg of strontium chloride, and 7 kg of water respectively for later use. In this embodiment, the concentration of wood vinegar is 36 wt %, and the concentration of EDTA is 7.5%.

[0036] The weighed ammonium dihydrogen phosphate was added to the first reaction kettle, and then 4 kg of water was added and stirred to make the ammonium dihydrogen phosphate and water miscible; then, the weighed wood vinegar was added to the first reaction kettle, and stirred at 40° C. for 1 hour to obtain intermediate A liquid.

[0037] The weighed EDTA was added to the second reaction kettle, and the remaining water was added, stirred to dissolve, and allowed to stand for 2 hours; the weighed strontium chloride was then added to the second reaction kettle, and allowed to react at 40° C. for 1 hour to obtain intermediate solution B.

[0038] After mixing the intermediate liquid A with the intermediate liquid B, stir them thoroughly and evenly to obtain the fertilizer for Apocynum venetum.

[0039] Example 2 The steps for preparing the fertilizer for Apocynum venetum in this embodiment are as follows.

[0040] Weigh 10 kg of ammonium dihydrogen phosphate, 1.5 kg of wood vinegar, 1.8 kg of EDTA, 0.75 kg of strontium chloride, and 12 kg of water respectively for standby use. In this embodiment, the concentration of wood vinegar is 40 wt %, and the concentration of EDTA is 8.3%.

[0041] The weighed ammonium dihydrogen phosphate was added to the first reaction kettle, and then 7 kg of water was added and stirred to make the ammonium dihydrogen phosphate and water mutually soluble; then, the weighed wood vinegar was added to the first reaction kettle, and stirred at 40° C. for 1.5 hours to obtain intermediate A liquid.

[0042] The weighed EDTA was added to the second reaction kettle, and the remaining water was added, stirred to dissolve, and allowed to stand for 3 hours; the weighed strontium chloride was then added to the second reaction kettle, and allowed to react at 30°C for 2.5 hours to obtain intermediate solution B.

[0043] After mixing the intermediate liquid A with the intermediate liquid B, stir them thoroughly and evenly to obtain the fertilizer for Apocynum venetum.

[0044] 2. Experiment 1. Application method The first dilution solution is obtained by dissolving the apocynum fertilizer and water in a mass ratio of 1:2000-1:4000. When the apocynum is about to enter the initial flowering period in May, the leaves of the apocynum are sprayed at sunset.

[0045] When the dogbane enters its peak flowering period, its leaves are picked and put through a series of fine processes such as withering and rolling to make dogbane tea rich in organic strontium.

[0046] 2. Field trials 2.1 A three-year-old Lophatherum venetum in a Lophatherum venetum sand prevention and control demonstration area in Yuli County, Bayinguoleng Mongol Autonomous Prefecture, Xinjiang Uygur Autonomous Region was selected as the experimental field, with an experimental area of ​​6 mu, divided into 3 experimental groups and 3 blank groups, and the area of ​​each experimental group or blank group was 1 mu.

[0047] The fertilizer for apocynum venetum prepared in Example 1 was taken and diluted at a ratio of 32 g of the fertilizer for apocynum venetum to 100 L of water to obtain a first dilution.

[0048] Experimental group: Foliar spraying was carried out at the initial flowering stage of Apocynum venetum, with 50L of the first dilution sprayed per mu of land.

[0049] Blank group: foliar spraying was carried out at the initial flowering stage of Apocynum venetum, with 50L of water sprayed per mu of land.

[0050] About 90 days after spraying, the leaves of Apocynum venetum were picked and made into tea, and the strontium content of Apocynum venetum tea was measured, and the average values ​​of the three experimental groups and three blank groups were taken. The test results showed that the strontium content of Apocynum venetum tea prepared in the experimental group was 1.95 times that of the Apocynum venetum tea prepared in the blank group.

[0051] 2.2 A sand control belt of Apocynum aviculare in a Gobi Desert of Yuli County was selected for the experiment. The width of the sand control belt was about 8-12 meters. Two sections were selected, each 50 meters long, with a distance of about 20 meters between the two sections; one section was used as the experimental group and the other as the blank group.

[0052] The fertilizer for apocynum venetum prepared in Example 2 was taken and diluted at a ratio of 40 g of the fertilizer for apocynum venetum to 100 L of water to obtain a first dilution.

[0053] Experimental group: spray the leaves of Apocynum venetum at the initial flowering stage, spray 50L of the first dilution per mu of land. Figure 1 , Figure 2 shown.

[0054] Blank group: foliar spraying was carried out at the initial flowering stage of Apocynum venetum, with 50L of water sprayed per mu of land.

[0055] About 90 days after spraying, the leaves of Apocynum venetum were picked and made into tea, and the strontium content of Apocynum venetum tea was measured. The strontium content of Apocynum venetum tea prepared in the blank group was 1.17 mg / kg, and the strontium content of Apocynum venetum tea prepared in the experimental group was 3.35 mg / kg.

[0056] In summary, the test results show that the present application can increase the strontium content of the apocynum venetum tea, which has a good benefit for improving the user's trace element intake. Strontium is an indispensable trace element for the human body. It is a normal component of human bones and teeth. It can also help the human body reduce the absorption of sodium and prevent hypertension, cardiovascular and other diseases. The apocynum venetum tea of ​​the present application is rich in organic strontium, which makes strontium easier to absorb and has a higher absorption efficiency.

[0057] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A fertilizer for apocynum venetum, characterized in that: It is prepared from the following raw materials: diammonium phosphate, wood vinegar, EDTA, strontium chloride, water; The mass percentage of the wood vinegar is 32-43wt%, and the weight proportions of the ammonium dihydrogen phosphate, wood vinegar, EDTA, and strontium chloride are as follows: 8-20 parts of ammonium dihydrogen phosphate, 1-4 parts of wood vinegar, 1-4 parts of EDTA, and 1 part of strontium chloride; The sum of the mass of the ammonium dihydrogen phosphate, wood vinegar, EDTA and strontium chloride is 45% to 60% of the fertilizer for apocynum venetum.

2. The fertilizer for apocynum venetum according to claim 1, characterized in that: It is prepared by the following steps: (a) Preparation of intermediate solution A Add ammonium dihydrogen phosphate to the first reaction kettle, add some water, and stir to make the ammonium dihydrogen phosphate and water miscible; then, add wood vinegar to the first reaction kettle, stir at 20°C-80°C for 0.2-4h to obtain intermediate A liquid; (b) Preparation of intermediate solution B Add EDTA to the first reaction kettle, add the remaining water, and stir to make EDTA and water miscible; then, add strontium chloride to the second reaction kettle, react at 30°C-80°C for 0.2-4h to obtain intermediate B solution; (c) Preparation of finished products After mixing the intermediate liquid A with the intermediate liquid B, stir them thoroughly and evenly to obtain the fertilizer for Apocynum venetum.

3. The use of the apocynum venetum fertilizer according to claim 1 or 2, characterized in that: The fertilizer for Apocynum venetum is used for foliar spraying of Apocynum venetum.

4. The use according to claim 3, characterized in that: The steps include: (1) dissolving the apocynum venetum fertilizer and water in a mass ratio of 1:2000-1:4000 to obtain a first dilution; (2) When the dogbane enters the early flowering stage, spray the first dilution on the dogbane leaves at sunset.

5. The use according to any one of claims 3 to 4, characterized in that: The dosage of Apocynum venetum per mu is 10~30g.

6. The use according to any one of claims 3 to 5, characterized in that: The following steps are also included: (3) After the apocynum venetum enters the flowering period, the apocynum venetum leaves are picked; and the picked apocynum venetum leaves are withered and rolled to make apocynum venetum tea rich in organic strontium.

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