Foliar fertilizer containing pyroligneous liquor and capable of increasing yield of rice in saline-alkali soil and use method of foliar fertilizer
By using foliar fertilizer containing wood vinegar on rice in saline-alkali land, the problem of micronutrient deficiency in rice was solved, resulting in a significant increase in yield and improvement in physiological state, and enhanced absorption and utilization of various elements.
Patent Information
- Application Number
- CN202511615442.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-01-06
AI Technical Summary
In existing technologies, rice grown in saline-alkali soil lacks essential trace elements, leading to reduced yields. Traditional silicon fertilizers have low and unstable utilization rates, failing to effectively increase rice yields.
The foliar fertilizer containing wood vinegar consists of wood vinegar, nano-silica, stabilizer, compound amino acid solution, urea, boric acid, zinc sulfate, magnesium sulfate, calcium nitrate, potassium sulfate, ammonium phosphate and fungicide. It supplements the nutrients needed by rice through leaves, promotes the absorption and utilization of various elements, and enhances the ability to resist salt and alkali stress.
It significantly increases the yield of rice in saline-alkali land, improves physiological condition, enhances photosynthetic efficiency, improves the absorption and utilization of elements such as silicon, magnesium, zinc, calcium, and boron, reduces physiological damage, and ensures growth and yield.
Smart Images
Figure CN121270321A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rice foliar fertilizer technology, and in particular to a foliar fertilizer containing wood vinegar for increasing rice yield in saline-alkali land and its application method. Background Technology
[0002] Foliar fertilizer is a type of fertilizer in which nutrients are applied to the surface of crop leaves and absorbed by the leaves to exert their functions. Plant leaves have two layers of epidermis, composed of epidermal cells. The outer side of the epidermal cells has a cuticle and a wax layer, which can protect the mesophyll cells under the epidermal tissue from the effects of adverse external conditions, enabling them to perform functions such as photosynthesis and respiration. The leaf surface also has many tiny stomata, which perform the function of gas exchange. By using foliar fertilization, nutrients can be quickly introduced into the plant through the leaves, solving the problem of nutrient deficiency in plants.
[0003] Rice is a vital global food resource, providing staple food and energy for more than half the world's population. Rice requires not only macronutrients such as nitrogen, phosphorus, and potassium, but also micronutrients like silicon, magnesium, and boron. While these micronutrients constitute a small percentage of the total elements needed for rice's growth cycle, they play a crucial role in its development. Furthermore, rice is a typical silicon-rich plant, requiring a significant amount of silicon during its growth. Applying silicon fertilizer enhances carbon metabolism and photosynthesis in rice, resulting in a substantial yield increase, averaging 8.7%. Currently, the market offers a wide variety of macronutrient fertilizers (nitrogen, phosphorus, and potassium), but fewer micronutrient fertilizers specifically formulated for single crops. This leads to some crops lacking essential micronutrients, thus reducing yield. Additionally, the application of traditional silicon fertilizers is often limited by low bioavailability, instability, and insolubility. Although some foliar fertilizers containing nano-silicon have been disclosed, their low bioavailability remains a concern. Summary of the Invention
[0004] The purpose of this invention is to provide a foliar fertilizer containing wood vinegar that can increase the yield of rice in saline-alkali land. It directly supplements the nutrients needed by rice in saline-alkali land through the leaves, improves its physiological state, significantly increases its yield, and significantly improves the absorption and utilization of various elements such as silicon, magnesium, zinc, calcium, and boron by rice.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:
[0006] This invention provides a foliar fertilizer containing wood vinegar to improve rice yield in saline-alkali land. By weight, it comprises the following components: 8.0-12.0 parts wood vinegar, 2.0-4.5 parts nano-silica, 0.3-0.7 parts stabilizer, 2.0-5.5 parts compound amino acid solution, 5.5-9.0 parts urea, 0.5-1.2 parts boric acid, 0.03-0.07 parts zinc sulfate, 0.08-0.14 parts magnesium sulfate, 0.05-0.13 parts calcium nitrate, 1.0-2.0 parts potassium sulfate, 0.8-1.5 parts ammonium hydrogen phosphate, 0.50-0.95 parts ammonium dihydrogen phosphate, and 0.08-0.4 parts fungicide.
[0007] Preferably, by weight, it comprises the following components: 8.5-11.5 parts wood vinegar, 2.5-3.5 parts nano silica, 0.35-0.65 parts stabilizer, 2.8-4.5 parts compound amino acid solution, 6.5-8.5 parts urea, 0.5-1.2 parts boric acid, 0.03-0.07 parts zinc sulfate, 0.08-0.14 parts magnesium sulfate, 0.05-0.13 parts calcium nitrate, 1.0-2.0 parts potassium sulfate, 0.8-1.5 parts ammonium hydrogen phosphate, 0.50-0.95 parts ammonium dihydrogen phosphate, and 0.1-0.3 parts bactericide.
[0008] Preferably, the wood vinegar is prepared by sequentially crushing, drying, dry distilling, condensing and separating rice straw.
[0009] Preferably, the method for preparing the wood vinegar includes the following steps:
[0010] (1) Rice straw is crushed and dried in sequence to obtain straw crushed material with a moisture content of 10wt%~15wt%;
[0011] (2) The straw pulverized material obtained in step (1) is subjected to dry distillation to obtain dry distillation gas;
[0012] The heating method for the dry distillation is as follows: the temperature is raised to 200°C at a rate of 5-8°C and held for 10-20 minutes, and then raised to 390-420°C at a rate of 8-12°C and held for 30-90 minutes.
[0013] (3) The dry distillation gas obtained in step (2) is condensed and separated sequentially to obtain wood vinegar;
[0014] The separation process includes, in sequence, settling, separation, and distillation.
[0015] Preferably, the particle size of the nano-silica is 50~200nm.
[0016] Preferably, the stabilizer is polyaspartic acid.
[0017] Preferably, the amino acid content in the composite amino acid solution is 15-25 wt%, and the amino acid is at least one of glutamic acid, lysine, methionine, and proline.
[0018] Preferably, the bactericide is at least one of jinggangmycin, thifluzamide, and tricyclazole.
[0019] The present invention also provides a method for using a foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land. During the tillering stage of rice, the foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land is diluted 500 to 1000 times and sprayed on the rice leaves, and sprayed continuously for 3 to 5 times.
[0020] Preferably, the interval between each spraying is 3 to 6 days, and the amount sprayed each time is 5 to 7 mL / plant.
[0021] This invention provides a foliar fertilizer containing wood vinegar to increase the yield of rice in saline-alkali land. It utilizes wood vinegar, nano-silica, urea, boric acid, zinc sulfate, magnesium sulfate, calcium nitrate, potassium sulfate, ammonium hydrogen phosphate, and ammonium dihydrogen phosphate to provide the necessary nutrients for rice in saline-alkali land. A stabilizer promotes the absorption and utilization of these nutrients by the rice leaves. A compound amino acid solution promotes root development, enhances nutrient absorption capacity, strengthens resistance to saline-alkali stress, reduces physiological damage, improves leaf function, and increases photosynthetic efficiency, significantly improving the growth status of rice in saline-alkali land and increasing yield. A fungicide controls diseases to ensure growth and yield. Furthermore, the simultaneous use of the stabilizer, compound amino acid solution, and fungicide promotes the absorption and utilization of various elements by rice, including silicon, magnesium, zinc, calcium, and boron, thereby significantly increasing the yield of rice in saline-alkali land. Attached Figure Description
[0022] Figure 1 This is a statistical bar chart showing the yield increase rate of rice after applying foliar fertilizers in Examples 1-9 and Comparative Examples 1-4 in this invention. Detailed Implementation
[0023] This invention provides a foliar fertilizer containing wood vinegar to improve rice yield in saline-alkali land. By weight, it comprises the following components: 8.0-12.0 parts wood vinegar, 2.0-4.5 parts nano-silica, 0.3-0.7 parts stabilizer, 2.0-5.5 parts compound amino acid solution, 5.5-9.0 parts urea, 0.5-1.2 parts boric acid, 0.03-0.07 parts zinc sulfate, 0.08-0.14 parts magnesium sulfate, 0.05-0.13 parts calcium nitrate, 1.0-2.0 parts potassium sulfate, 0.8-1.5 parts ammonium hydrogen phosphate, 0.50-0.95 parts ammonium dihydrogen phosphate, and 0.08-0.4 parts fungicide.
[0024] Unless otherwise specified, all raw materials used in this invention are commercially available products in the art.
[0025] In this invention, the foliar fertilizer containing wood vinegar for increasing rice yield in saline-alkali land preferably comprises the following components by weight: 8.5-11.5 parts wood vinegar, 2.5-3.5 parts nano silica, 0.35-0.65 parts stabilizer, 2.8-4.5 parts compound amino acid solution, 6.5-8.5 parts urea, 0.5-1.2 parts boric acid, 0.03-0.07 parts zinc sulfate, 0.08-0.14 parts magnesium sulfate, 0.05-0.13 parts calcium nitrate, 1.0-2.0 parts potassium sulfate, 0.8-1.5 parts ammonium hydrogen phosphate, 0.50-0.95 parts ammonium dihydrogen phosphate, and 0.1-0.3 parts fungicide.
[0026] This invention rapidly replenishes nitrogen by adding a certain amount of urea, promoting rice leaf growth and tillering, and alleviating the problems of stunted growth and yellowing leaves caused by nitrogen loss or fixation in saline-alkali soils. It utilizes boric acid (boron fertilizer) to promote pollen tube development and cell wall formation in rice, alleviating the common problem of "flowering but not bearing fruit" in saline-alkali soils, enhancing the root system's absorption of calcium and magnesium, reducing root tip necrosis and leaf curling caused by boron deficiency, increasing the grain filling rate, and reducing empty panicles and semi-full grains. It utilizes zinc sulfate (zinc fertilizer) to alleviate zinc fixation caused by high pH in saline-alkali soils, promoting chlorophyll synthesis and auxin metabolism, preventing "stunted seedlings" and "stuck base," enhancing root vitality, improving the absorption and utilization rate of nitrogen and phosphorus in rice, increasing the number of effective panicles and grains per panicle, reducing empty grains caused by zinc deficiency, and increasing rice yield. Finally, it utilizes magnesium sulfate (magnesium fertilizer) to alleviate the problems of saline-alkali soils. Yellowing of rice leaves and interveinal chlorosis promote the transport of photosynthetic products to the roots and grains, enhance plant resistance to stress (such as salt and drought tolerance), prolong the lifespan of functional leaves, and significantly improve grain plumpness. Calcium nitrate (calcium fertilizer) enhances the stability of rice cell walls, reduces cell rupture under salt and alkali stress, lowers sodium ion content in the plant, alleviates salt damage, prevents leaf tip burn and curling, improves seed setting rate and lodging resistance, reduces poor glume development due to calcium deficiency, and avoids grain shedding. Potassium sulfate (potassium fertilizer) supplements potassium, promotes robust rice stems, and the components synergistically increase rice yield. Ammonium hydrogen phosphate and ammonium dihydrogen phosphate contain nitrogen and phosphorus, which can be rapidly absorbed by rice leaves through foliar spraying, quickly replenishing the nitrogen and phosphorus nutrients needed by rice, promoting rice growth and development, and increasing rice yield.
[0027] In this invention, the wood vinegar is preferably prepared by sequentially crushing, drying, dry distilling, condensing, and separating rice straw. This invention uses rice straw as a raw material to prepare wood vinegar, thus realizing the resource utilization of rice straw.
[0028] In this invention, the method for preparing the wood vinegar preferably includes the following steps:
[0029] (1) Rice straw is crushed and dried in sequence to obtain straw crushed material with a moisture content of 10wt%~15wt%;
[0030] (2) The straw pulverized material obtained in step (1) is subjected to dry distillation to obtain dry distillation gas;
[0031] The heating method for the dry distillation is as follows: the temperature is raised to 200°C at a rate of 5-8°C and held for 10-20 minutes, and then raised to 390-420°C at a rate of 8-12°C and held for 30-90 minutes.
[0032] (3) The dry distillation gas obtained in step (2) is condensed and separated sequentially to obtain wood vinegar;
[0033] The separation process includes, in sequence, settling, separation, and distillation.
[0034] In this invention, the drying method is preferably sun-drying or oven-drying. In this invention, the average length of the crushed straw is preferably 3-8 cm. This invention controls the average length of the crushed straw within this range to facilitate uniform heating and gas escape during subsequent dry distillation, thereby increasing the yield of wood vinegar. This invention controls the moisture content of the crushed straw within the above range to avoid excessive moisture production during subsequent dry distillation, which would affect the purity of the wood vinegar.
[0035] This invention controls the heating rate, holding temperature, and time of the dry distillation within the above-mentioned range to achieve uniform heating, promote the full decomposition of organic components in rice straw into small molecules (such as organic acids and alcohols), reduce impurities in the wood vinegar, increase the content of effective active ingredients in the prepared wood vinegar, and utilize the full and uniform escape of gas to improve the yield and quality of the wood vinegar, thereby enhancing its fertility and application effect.
[0036] In this invention, the separation preferably includes letting the condensed product stand for 2-3 days, separating it using a separatory funnel to obtain a middle layer of crude wood vinegar, and then removing residual water and impurities from the middle layer of crude wood vinegar by distillation to obtain wood vinegar.
[0037] In this invention, the distillation temperature is preferably 80-100℃; the distillation is preferably performed 3-4 times. This invention reduces the pH (to 3-4) and tar content through multiple distillations, avoiding scorching of crops and obtaining a wood vinegar solution suitable for rice leaves.
[0038] In this invention, the particle size of the nano-silica is preferably 50-200 nm. By controlling the particle size of the nano-silica within the above range, this invention enhances its surface activity and promotes its absorption and utilization by rice leaves.
[0039] In this invention, the stabilizer is preferably polyaspartic acid. This invention utilizes polyaspartic acid as a stabilizer to promote the uniform dispersion of the raw materials and to complex metal ions. After subsequent foliar spraying, a uniform film is formed, improving the absorption and utilization of various nutrients by the rice leaves.
[0040] In this invention, the amino acid content in the compound amino acid solution is preferably 15-25 wt%. The amino acid is preferably at least one selected from glutamic acid, lysine, methionine, and proline. This invention uses a compound amino acid solution to enhance the stress resistance of rice, especially improving its tolerance to adverse environments such as low temperature and drought. It promotes rice protein synthesis, contributing to fuller grains and increased yield. It also promotes chlorophyll synthesis, preventing leaf yellowing, enhancing rice's resistance to pests and diseases, reducing the probability of disease occurrence, improving the absorption and utilization rate of other nutrients, and promoting rice tillering, laying the foundation for high yields in later stages.
[0041] In this invention, the fungicide is preferably at least one selected from jinggangmycin, thifluzamide, and tricyclazole. This invention utilizes fungicides to control diseases, ensuring the growth and yield of rice.
[0042] In this invention, the preferred method for preparing the foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land is as follows: a stabilizer, a compound amino acid solution, urea, boric acid, zinc sulfate, magnesium sulfate, calcium nitrate, potassium sulfate, ammonium hydrogen phosphate and ammonium dihydrogen phosphate are added to the wood vinegar, mixed evenly, and then nano-silica and a bactericide are added. The mixture is then ultrasonically treated at room temperature for 3-10 minutes to obtain the foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land.
[0043] The present invention also provides a method for using a foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land. During the tillering stage of rice, the foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land is diluted 500 to 1000 times and sprayed on the rice leaves, and sprayed continuously for 3 to 5 times.
[0044] In this invention, the preferred interval between each spraying is 3 to 6 days, and the preferred spraying amount is 5 to 7 mL per plant.
[0045] The technical solutions of this invention will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0046] Unless otherwise specified, all experiments were repeated three times, and the results are expressed as averages.
[0047] Example 1
[0048] A foliar fertilizer containing wood vinegar for improving rice yield in saline-alkali land, comprising the following components by weight: 10 parts wood vinegar, 3.0 parts nano-silica with an average particle size of 120 nm, 0.5 parts polyaspartic acid stabilizer, 3.5 parts compound amino acid solution, 7.5 parts urea, 1.1 parts boric acid, 0.05 parts zinc sulfate, 0.125 parts magnesium sulfate, 0.08 parts calcium nitrate, 1.5 parts potassium sulfate, 1 part ammonium hydrogen phosphate, 0.75 parts ammonium dihydrogen phosphate, and 0.3 parts fungicide;
[0049] The composite amino acid solution contains 18 wt% amino acids; the amino acids are composed of glutamic acid, lysine, methionine and proline in a mass ratio of 4:2:1:3.
[0050] The bactericide is composed of jinggangmycin and thifluzamide in a mass ratio of 1:1;
[0051] The preparation method of the wood vinegar is as follows:
[0052] (1) Rice straw was crushed and dried in sequence to obtain straw crushed material with an average length of 6cm and a moisture content of 12wt%;
[0053] (2) The straw pulverized material obtained in step (1) is subjected to dry distillation to obtain dry distillation gas;
[0054] The heating method for the dry distillation is as follows: the temperature is increased to 200°C at a rate of 8°C and held for 20 minutes, and then increased to 400°C at a rate of 10°C and held for 80 minutes.
[0055] (3) The gas obtained from the dry distillation in step (2) is condensed to obtain a mixture. The mixture is then left to stand at room temperature for 2 days. The mixture is separated using a separatory funnel to obtain the middle layer of crude wood vinegar. The middle layer of crude wood vinegar is then distilled 3 times at 90~100℃ to remove residual water and impurities, resulting in a wood vinegar with a pH value of 3~4.
[0056] The method for preparing the foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land is as follows: add stabilizer, compound amino acid solution, urea, boric acid, zinc sulfate, magnesium sulfate, calcium nitrate, potassium sulfate, ammonium monohydrogen phosphate and ammonium dihydrogen phosphate to wood vinegar, mix evenly, then add nano silica and bactericide, and sonicate at room temperature for 8 minutes to obtain the foliar fertilizer containing wood vinegar to improve the yield of rice in saline-alkali land.
[0057] Example 2
[0058] A foliar fertilizer containing wood vinegar to increase rice yield in saline-alkali land, which differs from Example 1 in that it contains 3.5 parts of nano-silica.
[0059] Example 3
[0060] A foliar fertilizer containing wood vinegar that can improve rice yield in saline-alkali land, differing from Example 1 in that it contains 2.5 parts of nano-silica.
[0061] Comparative Example 1
[0062] A foliar fertilizer, which differs from Example 1 in that it does not contain nano-silica.
[0063] Example 4
[0064] A foliar fertilizer containing wood vinegar that can improve rice yield in saline-alkali land, differing from Example 1 in that it contains 0.65 parts of stabilizer.
[0065] Example 5
[0066] A foliar fertilizer containing wood vinegar that can improve rice yield in saline-alkali land, differing from Example 1 in that it contains 0.35 parts of stabilizer.
[0067] Comparative Example 2
[0068] A foliar fertilizer, which differs from Example 1 in that it does not contain a stabilizer.
[0069] Example 6
[0070] A foliar fertilizer containing wood vinegar that can improve rice yield in saline-alkali land differs from Example 1 in that it contains 4.5 parts of compound amino acid liquid.
[0071] Example 7
[0072] A foliar fertilizer containing wood vinegar that can improve rice yield in saline-alkali land differs from Example 1 in that it contains 2.8 parts of compound amino acid liquid.
[0073] Comparative Example 3
[0074] A foliar fertilizer, which differs from Example 1 in that it does not contain compound amino acid liquid.
[0075] Example 8
[0076] A foliar fertilizer containing wood vinegar for increasing rice yield in saline-alkali land, differing from Example 1 in that it contains 0.2 parts of fungicide.
[0077] Example 9
[0078] A foliar fertilizer containing wood vinegar for increasing rice yield in saline-alkali land, differing from Example 1 in that it contains 0.1 parts of fungicide.
[0079] Comparative Example 4
[0080] A foliar fertilizer, which differs from Example 1 in that it does not contain fungicide.
[0081] Rice paddies planted in saline-alkali land were randomly divided into 14 experimental plots (S1~S14). Commercially available fertilizers were applied normally. Rice in plot S14 served as a blank control group. During the tillering stage of rice in plots S1~S13, foliar fertilizers from Examples 1~9 and Comparative Examples 1~4 were diluted 1000 times and sprayed onto the rice leaves, respectively, for four consecutive applications, with an interval of six days between each application. The preferred application rate was 6 mL per plant. While the foliar fertilizers were being applied to rice in plots S1~S13, water was sprayed onto the leaves of rice in plot S14. Rice was maintained using normal methods, and the yield of rice in all experimental plots was recorded and compared with the blank control group. The improvement rate was calculated, and the results are shown in Table 1 and [Table data missing]. Figure 1 As shown.
[0082] Table 1. Rice yield increase rate after application of foliar fertilizer in Examples 1-9 and Comparative Examples 1-4
[0083]
[0084] From Table 1 and Figure 1 It can be seen that, compared with the control group, the foliar fertilizer provided by the present invention can significantly increase the yield of rice, and the stabilizer, compound amino acid liquid and fungicide can effectively increase the yield of rice in saline-alkali land at the same time.
[0085] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A pyroligneous acid-containing foliar fertilizer for increasing the yield of rice in saline-alkali soil, characterized by comprising: By mass fraction, the following components are included: wood vinegar 8.0-12.0 parts, nano-silicon dioxide 2.0-4.5 parts, stabilizer 0.3-0.7 parts, compound amino acid liquid 2.0-5.5 parts, urea 5.5-9.0 parts, boric acid 0.5-1.2 parts, zinc sulfate 0.03-0.07 parts, magnesium sulfate 0.08-0.14 parts, calcium nitrate 0.05-0.13 parts, potassium sulfate 1.0-2.0 parts, ammonium monohydrogen phosphate 0.8-1.5 parts; ammonium dihydrogen phosphate 0.50-0.95 parts, fungicide 0.08-0.4 parts.
2. The foliage fertilizer according to claim 1, characterized in that, By mass fraction, the following components are included: wood vinegar 8.5-11.5 parts, nano-silicon dioxide 2.5-3.5 parts, stabilizer 0.35-0.65 parts, compound amino acid liquid 2.8-4.5 parts, urea 6.5-8.5 parts, boric acid 0.5-1.2 parts, zinc sulfate 0.03-0.07 parts, magnesium sulfate 0.08-0.14 parts, calcium nitrate 0.05-0.13 parts, potassium sulfate 1.0-2.0 parts, ammonium monohydrogen phosphate 0.8-1.5 parts; ammonium dihydrogen phosphate 0.50-0.95 parts, fungicide 0.1-0.3 parts.
3. The foliar fertilizer of claim 1, wherein The wood vinegar is prepared from rice straw by sequentially performing crushing, drying, dry distillation, condensation and separation.
4. The foliage fertilizer according to claim 3, characterized in that, The preparation method of the wood vinegar comprises the following steps: (1) sequentially performing crushing and drying on rice straw to obtain straw crushing material with a water content of 10wt%-15wt%; (2) performing dry distillation on the straw crushing material obtained in step (1) to obtain dry distillation gas; The heating mode of the dry distillation is as follows: increasing the temperature to 200℃ at a temperature increasing rate of 5-8℃ and maintaining for 10-20min, and then increasing the temperature to 390-420℃ at a temperature increasing rate of 8-12℃ and maintaining for 30-90min; (3) sequentially performing condensation and separation on the dry distillation gas obtained in step (2) to obtain wood vinegar; The separation comprises sequentially performing standing, liquid separation and distillation.
5. The foliage fertilizer according to claim 1, characterized in that, The particle size of the nano-silicon dioxide is 50-200nm.
6. The foliage fertilizer according to claim 1, characterized in that, The stabilizer is polyaspartic acid.
7. The foliage fertilizer according to claim 1, wherein The content of amino acid in the compound amino acid liquid is 15-25wt%, and the type of the amino acid is at least one of glutamic acid, lysine, methionine and proline.
8. The foliar fertilizer according to claim 1, wherein the fungicide is at least one of validamycin, thifluzamide and tricyclazole.
9. A method for improving the yield of rice in saline-alkali soil by using a pyroligneous acid-containing foliar fertilizer, characterized in that, In the tillering stage of rice, the wood vinegar-containing foliar fertilizer for increasing the yield of rice in saline-alkali land is diluted 500-1000 times and sprayed on the leaves of rice, and the spraying is continuously performed for 3-5 times.
10. The method of use of claim 9, wherein, The interval between each spraying is 3-6 days, and the spraying amount is 5-7mL / plant.