CN111377775A - Active synergistic fertilizer special for corn - Google Patents
Active synergistic fertilizer special for corn Download PDFInfo
- Publication number
- CN111377775A CN111377775A CN202010421915.5A CN202010421915A CN111377775A CN 111377775 A CN111377775 A CN 111377775A CN 202010421915 A CN202010421915 A CN 202010421915A CN 111377775 A CN111377775 A CN 111377775A
- Authority
- CN
- China
- Prior art keywords
- fertilizer
- corn
- special
- active synergistic
- active
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention provides an active synergistic fertilizer special for corn, and relates to the technical field of corn planting. The special active synergistic fertilizer for corn is composed of a main fertilizer and fertilizer auxiliaries, wherein the fertilizer auxiliaries comprise: the soil infiltration loosening material is prepared by mixing betaine, polymaleic anhydride and nonionic polyacrylamide. The invention overcomes the defects of the prior art, ensures various substances required by the growth of the corn, improves the utilization rate and the absorption rate of the fertilizer in the corn planting process, and enhances the economic benefit of the corn planting.
Description
Technical Field
The invention relates to the technical field of corn planting, in particular to an active synergistic corn special fertilizer.
Background
Recent researches show that the organic matter of soil in many areas of China is reduced, the soil is hardened, and the relationship between fertilization and yield has a decreasing rule: the more fertilization, the lower the fertilizer utilization rate, the less the yield of crops increased by unit fertilization amount, the more excessive fertilization even the yield reduction and the environmental pollution. The main reasons are: 1, the fertilizer product has low technical content; 2. the fertilization technical level is low; 3. the soil is hardened, and the water and fertilizer retention effect is poor; 4. the root system of the crops grows weakly, and the absorption and utilization of nutrients are influenced.
When the fertilizer is used excessively, part of nutrient elements such as nitrogen, phosphorus and the like which are not utilized by crops enter underground water through leakage to cause pollution of the underground water, such as over standard nitrite of the underground water, and the safety of people and livestock is seriously threatened; one part enters surface water through surface runoff to cause eutrophication of the surface water; many toxic and harmful substances such as: heavy metals permeate into the soil, causing environmental pollution. The salinization, hardening and ecological deterioration of soil in bad weather cause the quality of cultivated land to be reduced, and influence the normal growth and quality reduction of crops. Therefore, there is a need to research an active synergistic fertilizer, which can increase both the yield of the fertilizer and overcome the problems of deterioration of the physicochemical properties of soil and soil pollution caused by applying the fertilizer for a long time, and achieve the purposes of improving the soil, increasing the yield of crops and improving the quality.
Plant growth regulators such as naphthylacetic acid, compound sodium nitrophenolate and gibberellin are added into the existing fertilizer varieties in the current market, so that the growth of crops is promoted under the action of the regulators; but has no standard limitation, causes market confusion, regulator abuse and influences the quality and safety of crops. The national management department of 2019 sets corresponding standards and limits the addition of plant growth regulators in fertilizers. But encourages adding the biological stimulator synergist into the fertilizer to improve the utilization rate of the traditional fertilizer.
Corn is one of the main planting crops of grains in China, and has high yield and large nitrogen demand; the corn fertilizer is greatly influenced by fertilizer varieties, soil ecological environment, weather and plant diseases and insect pests, so the improvement of the corn fertilizer is a great planting research direction at the present stage.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the active synergistic special fertilizer for the corn, which ensures various substances required by the growth of the corn, improves the utilization rate and the absorption rate of the fertilizer in the corn planting process and enhances the economic benefit of the corn planting.
In order to achieve the above purpose, the technical scheme of the invention is realized by the following technical scheme:
the special active synergistic fertilizer for the corns consists of a main fertilizer and fertilizer auxiliaries, wherein the fertilizer auxiliaries comprise: the soil infiltration loosening material is prepared by mixing betaine, polymaleic anhydride and nonionic polyacrylamide.
Preferably, the content of the main fertilizer in the special fertilizer for corn is 96 wt% -99 wt%, and the content of the fertilizer auxiliary agent is 1 wt% -4 wt%.
Preferably, the content of the active synergistic factor for promoting the growth of crops in the fertilizer auxiliary agent is 50-70 wt%, and the content of the soil infiltration loosening material is 30-50 wt%.
Preferably, the main fertilizer comprises 1 part of nitrogenous fertilizer, 0.1-0.4 part of phosphate fertilizer, 0.1-0.5 part of potash fertilizer and 0-1 part of mineral fertilizer by weight.
Preferably, the nitrogen fertilizer is selected from one or more of urea, ammonium bicarbonate, ammonium chloride and ammonium sulfate; the phosphate fertilizer is selected from one or more of monoammonium phosphate, diammonium phosphate and calcium superphosphate; the potash fertilizer is selected from one or two of potassium chloride and potassium sulfate; the mineral fertilizer is one or more of zinc, boron, copper, iron, molybdenum, silicon, calcium and magnesium.
Preferably, the active synergistic factor for promoting the growth of the crops has the mass ratio of the amino-oligosaccharin to the zinc gamma-aminobutyrate to the biochemical fulvic acid of (0.5-1.5) to (1-2).
Preferably, the mass ratio of the betaine to the polymaleic anhydride to the nonionic polyacrylamide in the soil infiltration loose material is (0.2-0.3) to (1.5-2.5) to (0.1-0.3).
Preferably, the molecular weight of the polymaleic anhydride is 800-1100, and the molecular weight of the nonionic polyacrylamide is 1000-1300 ten thousand.
The invention provides an active synergistic corn special fertilizer, which has the advantages compared with the prior art that:
(1) the added crop growth activity synergistic factors are biological fermentation products, have strong biological activity and can slowly control nitrogen, phosphorus and potassium; the amino-oligosaccharin is used as an oligosaccharide derivative with negative charges, retains the biological function of the oligosaccharide, can induce plants to generate a series of defense reactions, and induces the plants to generate broad-spectrum disease resistance to indirectly inhibit plant pathogenic bacteria; the gamma-amino zinc butyrate has a good complexing function, and can complex medium and trace elements, activate phosphorus, promote absorption of the medium and trace elements by the corn and improve the quality of the corn;
(2) the application amount of the chemical fertilizer can be reduced and the utilization rate of the fertilizer can be increased by using the fertilizer; meanwhile, the crop yield is effectively increased; the residue of excessive application amount of single element of the fertilizer in grain crops is reduced, and the safety of edible grains is ensured; the biological regulator is replaced, the growth of the corn root system and the absorption and utilization of fertilizer nutrients can be promoted, and the disease resistance, the pest resistance, the immunity and the like of the corn are improved;
(3) the added soil permeable loose material can improve the cation exchange capacity of soil in the soil, complex high-valence metal ions and loosen the soil; the soil particles are glued, the granular structure of the soil is improved, the water and fertilizer retention capacity of the soil is improved, the polymaleic anhydride with the molecular weight of 800 plus 1100 has good stability and strong complexing and dispersing force, the nonionic polyacrylamide with the molecular weight of 1000-1300 ten thousand has good water-retaining effect, and the fertilizer has good use effect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the active synergistic corn fertilizer includes common fertilizer and fertilizer assistant, wherein the common fertilizerIntroducing N to P in nitrogenous fertilizer, phosphate fertilizer and potash fertilizer2O5∶K2The weight ratio of O is 26: 10: 12; specifically, by weight, 20 kg of ammonium chloride, 480 kg of urea, 50 kg of ammonium sulfate, 230 kg of monoammonium phosphate, 180 kg of potassium chloride, 20 kg of potassium sulfate and 20 kg of fertilizer auxiliaries; the fertilizer auxiliary agent comprises: 1 kg of amino-oligosaccharin, 1 kg of gamma-amino zinc butyrate and 2 kg of biochemical potassium fulvate; 0.3 kg of betaine, 2 kg of polymaleic anhydride, 0.1 kg of nonionic polyacrylamide and 13.6 kg of water. And spraying the fertilizer auxiliary agent on various components of the fertilizer, and mixing and granulating in a granulator to obtain the fertilizer. The fertilizer is suitable for corn planting in northeast China.
Example 2:
the active synergistic corn special fertilizer comprises a common fertilizer and a fertilizer auxiliary agent, wherein N: P in a nitrogen fertilizer, a phosphate fertilizer and a potassium fertilizer in the common fertilizer2O5∶K2The weight ratio of O is 28: 6: 8; specifically, by weight, 225 kg of ammonium chloride, 440 kg of urea, 50 kg of ammonium sulfate, 140 kg of monoammonium phosphate, 130 kg of potassium chloride and 15 kg of fertilizer auxiliary agent; the fertilizer auxiliary agent comprises: 0.5 kg of amino-oligosaccharin, 1 kg of gamma-amino zinc butyrate and 1 kg of biochemical potassium fulvate; 0.2 kg of betaine, 1.5 kg of polymaleic anhydride, 0.2 kg of nonionic polyacrylamide and 15.6 kg of water. And spraying the fertilizer auxiliary agent on various components of the fertilizer, and mixing and granulating in a granulator to obtain the fertilizer. The fertilizer is suitable for planting corns in the northern region of Huaihe river.
Example 3:
test of fertilizer efficiency of active synergistic corn special fertilizer to corn
Through field experiments, the effect of adding the special fertilizer for the active synergistic corn is comprehensively inspected, and the influence of the special fertilizer on the growth and the yield of the corn is verified.
1. Time and place of experiment: in 2019, 6-10 months in 28617xi county, the town of poplar and willow. The land is flat, the fertility is even, can irrigate and discharge, tall trees and buildings do not exist around.
2. The material and the method are as follows:
2.1 test fertilizers: fertilizer prepared in example 2: 42 percent (28-6-8) of special active synergistic compound fertilizer for corn and 46.2 percent of urea. Control fertilizer: 45% (25-10-10) of common compound fertilizer and 46.2% of urea.
2.2 test soil
The test soil is sand ginger black soil, the soil texture is clay loam, the thickness of a plough layer is 20cm, and the underground water level is 3.5-4.5 m. Organic matter content 18.45g/kg, total nitrogen 1.12g/kg, alkaline hydrolysis nitrogen 77.28mg/kg, available phosphorus 30.06mg/kg, quick-acting potassium 117.04 mg/kg. 486kg of wheat in the previous crop per mu.
2.3 varieties for testing
The tested crop is summer corn, variety Zhengdan 958.
2.2 design of the experiment
The experiment was performed with 3 treatments as follows:
TABLE 1 fertilization conditions under different fertilization treatments
2.3 test methods
The field arrangement adopts three rows, the walkways are arranged among the repetitions, the protection rows are arranged around the protection rows, the protection rows are randomly arranged in blocks and repeated for 3 times, the area of a cell is 3.6 × 5.55.55 which is 20m2, the row spacing is 60cm, the row direction is 6, the east-west row direction is adopted, and the yield is calculated by manually harvesting 2 rows.
And field management is carried out according to the requirements of high-yield fields. Returning the straws to the field, and ploughing and harrowing the straws. Fertilizing and sowing in different areas according to treatment in 17 days in 6 months, designing the density of 5000 plants/mu, and fixing seedlings in 11 days in 7 months. Micro-spraying for 40min at 20 days after 6 months, topdressing for 29 days after 7 months, and spraying for weeding by adding 30 kg of water and 150 g of Yuba (25% nicosulfuron atrazine) at 27 days after 6 months. And 4, controlling corn borers and aphids in 7-month and 15-day days. Harvested 10 months and 5 days.
2.4 data processing
Data were averaged over 3 replicates. Excel software is utilized in data processing, DPSv7.05 software is adopted in differential analysis, and an LSD method is used in multiple comparison.
3. Results and analysis
3.1 yield Effect
TABLE 2 yield of different fertilisation treatments
3.2 Fertilizer utilization
The fertilizer utilization rate is the percentage of the total amount of nutrients in the fertilizer occupied by the amount of nutrients absorbed by the crops from the applied fertilizer in the season, and is an important index for evaluating the fertilizer loss, and the higher the utilization rate is, the lower the loss rate is. Here, the agronomic utilization rate of the fertilizer is calculated by a difference method according to the absorption of N3.43kg per 100kg of grains produced:
TABLE 3 Fertilizer utilization rates for different treatments
The utilization rate of nitrogenous fertilizer treated by basal dressing retentivity fertilizer is respectively as follows: 43.4%, which is 15.7 higher than that of N15.
From the above embodiment, it can be seen that:
(1) the yield of the special active synergistic corn fertilizer treated by base application of 43 kg/mu is obviously higher than that of the common fertilizer N15 base dressing;
(2) when the special active synergistic corn fertilizer is applied to the base of 43 kg/mu, the utilization rate of the nitrogen fertilizer is 43.4 percent, which is 15.7 percent higher than that of the N15 common fertilizer;
(3) the special active synergistic fertilizer for corn can increase both production and income under the condition of one-time basal application and under the condition of reduced fertilization.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The special active synergistic fertilizer for corn is characterized by consisting of a main fertilizer and fertilizer auxiliaries, wherein the fertilizer auxiliaries comprise: the soil infiltration loosening material is prepared by mixing betaine, polymaleic anhydride and nonionic polyacrylamide.
2. The special active and synergistic fertilizer for corn as claimed in claim 1, wherein the content of the main fertilizer in the special fertilizer for corn is 96 wt% -99 wt%, and the content of the fertilizer auxiliary agent is 1 wt% -4 wt%.
3. The special active synergistic corn fertilizer as claimed in claim 1, wherein the content of the active synergistic factor for promoting the growth of crops in the fertilizer auxiliary agent is 50-70 wt%, and the content of the soil infiltration loosening material is 30-50 wt%.
4. The active synergistic corn special fertilizer as claimed in claim 1, wherein the main fertilizer comprises 1 part of nitrogen fertilizer, 0.1-0.4 part of phosphate fertilizer, 0.1-0.5 part of potassium fertilizer and 0-1 part of mineral fertilizer by weight.
5. The active synergistic corn special fertilizer as claimed in claim 4, wherein the nitrogen fertilizer is selected from one or more of urea, ammonium bicarbonate, ammonium chloride and ammonium sulfate; the phosphate fertilizer is selected from one or more of monoammonium phosphate, diammonium phosphate and calcium superphosphate; the potash fertilizer is selected from one or two of potassium chloride and potassium sulfate; the mineral fertilizer is one or more of zinc, boron, copper, iron, molybdenum, silicon, calcium and magnesium.
6. The active synergistic corn special fertilizer as claimed in claim 1, wherein the mass ratio of the amino-oligosaccharide, the zinc gamma-aminobutyrate and the biochemical fulvic acid in the active synergistic factor for promoting the growth of crops is (0.5-1.5) to (1-2).
7. The active synergistic corn special fertilizer as claimed in claim 1, wherein the mass ratio of betaine, polymaleic anhydride and nonionic polyacrylamide in the soil infiltration loose material is (0.2-0.3) to (1.5-2.5) to (0.1-0.3).
8. The active synergistic corn special fertilizer as claimed in claim 1, wherein the molecular weight of the polymaleic anhydride is 800-1100, and the molecular weight of the nonionic polyacrylamide is 1000-1300 ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010421915.5A CN111377775A (en) | 2020-05-18 | 2020-05-18 | Active synergistic fertilizer special for corn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010421915.5A CN111377775A (en) | 2020-05-18 | 2020-05-18 | Active synergistic fertilizer special for corn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111377775A true CN111377775A (en) | 2020-07-07 |
Family
ID=71220421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010421915.5A Pending CN111377775A (en) | 2020-05-18 | 2020-05-18 | Active synergistic fertilizer special for corn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111377775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112723942A (en) * | 2021-01-04 | 2021-04-30 | 中国科学院沈阳应用生态研究所 | Slow-release fertilizer with water retention and root protection functions and preparation method thereof |
| CN113149772A (en) * | 2021-05-26 | 2021-07-23 | 绥化市中强农业科技发展有限公司 | Special compound disease-resistant microbial fertilizer for corn and preparation method thereof |
| CN113461458A (en) * | 2021-08-11 | 2021-10-01 | 安徽朴茂农业科技有限公司 | Liquid biological film fertilizer water retaining agent |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032222A (en) * | 2007-04-25 | 2007-09-12 | 中国科学院植物研究所 | Method of improving salt resistance of plants through the inducement of gamma-aminobutyric acid |
| CN103483097A (en) * | 2013-10-15 | 2014-01-01 | 山西省农业科学院农业环境与资源研究所 | Fertilizer special for saline-alkali soil corns and preparation method thereof |
| CN104478548A (en) * | 2014-11-06 | 2015-04-01 | 成都新柯力化工科技有限公司 | Fertilizer special for increasing original ecological fragrance of tomato and application |
| CN105272684A (en) * | 2015-11-27 | 2016-01-27 | 安徽帝元生物科技有限公司 | Efficient fertilizer containing biomass charcoal |
| CN106242826A (en) * | 2016-08-26 | 2016-12-21 | 山东三方化工集团有限公司 | A kind of drought resisting, all nutrition type Semen Maydis long-acting special fertilizer and preparation method thereof |
| CN106542924A (en) * | 2016-09-30 | 2017-03-29 | 赵青娇 | A kind of high efficiency corn compound fertilizer |
| CN110922258A (en) * | 2019-12-18 | 2020-03-27 | 史丹利农业集团股份有限公司 | Functional stable bulk blend fertilizer and preparation method and application thereof |
-
2020
- 2020-05-18 CN CN202010421915.5A patent/CN111377775A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032222A (en) * | 2007-04-25 | 2007-09-12 | 中国科学院植物研究所 | Method of improving salt resistance of plants through the inducement of gamma-aminobutyric acid |
| CN103483097A (en) * | 2013-10-15 | 2014-01-01 | 山西省农业科学院农业环境与资源研究所 | Fertilizer special for saline-alkali soil corns and preparation method thereof |
| CN104478548A (en) * | 2014-11-06 | 2015-04-01 | 成都新柯力化工科技有限公司 | Fertilizer special for increasing original ecological fragrance of tomato and application |
| CN105272684A (en) * | 2015-11-27 | 2016-01-27 | 安徽帝元生物科技有限公司 | Efficient fertilizer containing biomass charcoal |
| CN106242826A (en) * | 2016-08-26 | 2016-12-21 | 山东三方化工集团有限公司 | A kind of drought resisting, all nutrition type Semen Maydis long-acting special fertilizer and preparation method thereof |
| CN106542924A (en) * | 2016-09-30 | 2017-03-29 | 赵青娇 | A kind of high efficiency corn compound fertilizer |
| CN110922258A (en) * | 2019-12-18 | 2020-03-27 | 史丹利农业集团股份有限公司 | Functional stable bulk blend fertilizer and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 孙颖等: "《植物保护技术手册》", 31 May 2017, 山西经济出版社 * |
| 莫饶: "《高级作物育种》", 30 November 2006, 中国农业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112723942A (en) * | 2021-01-04 | 2021-04-30 | 中国科学院沈阳应用生态研究所 | Slow-release fertilizer with water retention and root protection functions and preparation method thereof |
| CN113149772A (en) * | 2021-05-26 | 2021-07-23 | 绥化市中强农业科技发展有限公司 | Special compound disease-resistant microbial fertilizer for corn and preparation method thereof |
| CN113461458A (en) * | 2021-08-11 | 2021-10-01 | 安徽朴茂农业科技有限公司 | Liquid biological film fertilizer water retaining agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ali et al. | Effect of integrated use of organic manures with chemical fertilizers in the rice-rice cropping system and its impact on soil health | |
| Meng et al. | Straw incorporation helps inhibit nitrogen leaching in maize season to increase yield and efficiency in the Loess Plateau of China | |
| CN111377775A (en) | Active synergistic fertilizer special for corn | |
| Jahan et al. | The effects of chemical and organic fertilizers on saffron flowering | |
| Ghasemi et al. | Effect of foliar application of zinc nano oxide on agronomic traits of two varieties of rice (Oryza sativa L.) | |
| Dinka et al. | Effect of integrated nutrient management on growth and yield of food barley (Hordeum vulgare) variety in toke kutaye district, west showa zone, Ethiopia | |
| CN111423268A (en) | Special stress-resistant active fertilizer for rice | |
| Zheng et al. | Drip fertigation sustains crop productivity while mitigating reactive nitrogen losses in Chinese agricultural systems: Evidence from a meta-analysis | |
| CN114031451A (en) | Water-retaining and fertilizer-retaining soil conditioner and preparation method thereof | |
| CN113058984B (en) | Phytoremediation method for heavily cadmium-lead polluted farmland | |
| CN113308251A (en) | Soil conditioner | |
| CN109233863B (en) | Saline-alkali soil conditioner using straw and application thereof | |
| CN111943755A (en) | Special tobacco fertilizer for promoting early growth and fast growth of tobacco seedlings and preventing and treating underground pests | |
| CN111557137A (en) | Application method of soil conditioner in standard farmland construction | |
| Prasad et al. | Effect of organic and inorganic source of nutrients on growth and yield of barley (Hordeum vulgare L.) | |
| CN114342629A (en) | Rapid cultivation method for new terrace soil in loess hilly area | |
| CN104115602B (en) | Method for determining optimal nitrogen application amount in crop straw returning process | |
| CN107235802A (en) | Deep-ploughing-free compound microbial fertilizer | |
| CN113402334A (en) | Composite microbial nitrogen fertilizer and preparation method thereof | |
| AU2021104337A4 (en) | Active and enhanced efficiency fertilizer additive and active and enhanced efficiency fertilizer | |
| Abo Zahra | Impact of foliar and soil fertilization on productivity and quality of some soybean cultivars under calcareous soil conditions | |
| CN112979371A (en) | Soil conditioner for nursery stock planting, preparation method and improvement method thereof | |
| CN112778044A (en) | Organic water-soluble fertilizer containing fulvic acid and preparation method thereof | |
| Majumdar | Crop yield and soil nitrogen dynamics in an intermittently flooded rice field affected by nitrification inhibitors: (Einfluss von Nitrifikationshemmern auf Getreideertrag und Stickstoffdynamik im Boden in einem zeitweilig überfluteten Reisfeld) | |
| CN112723952B (en) | Composite nitrogen fertilizer synergist and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200707 |
|
| RJ01 | Rejection of invention patent application after publication |