Saline-alkali soil conditioner and preparation method thereof

Abstract

The invention relates to the technical field of soil treatment, and particularly discloses an efficient saline-alkali soil conditioner and a preparation method thereof. The preparation method innovatively integrates two key steps, and comprises the following steps: converting the phosphorus tailings into phosphorus tailing slurry through a slurry making generator; and solidifying the slurry into a mud cake by using a filter press. On the basis of a mud cake, ceramsite, boric acid, yeast metabolite, modified polyaspartic acid, chitosan oligosaccharide and an EM microbial agent are scientifically proportioned, mixing is conducted through a mixing box, refining is conducted through an ultrafine pulverizer, homogenizing stirring is conducted through a high-speed stirrer, and finally the granular saline-alkali soil conditioner which is uniform in particle size and easy to use is prepared through a vacuum pelletizer. The use method of the modifier is combined with the traditional fertilizer, and the modifier and the complex microbial inoculants are innovatively introduced, so that the soil environment of the saline-alkali soil can be remarkably improved, the growth quality of crops such as cucumbers is effectively improved, and the modifier also has a remarkable effect of preventing and treating diseases such as corynespora cucurbitae.

Description

Technical Field

[0001] The invention belongs to the technical field of soil treatment, and in particular relates to a saline-alkali soil improver and a preparation method thereof. Background Art

[0002] In the agricultural field, saline-alkali soil is a special and widespread soil type characterized by excessive salt and alkaline substances, which directly leads to the degradation of soil quality and thus constitutes a significant obstacle to the growth and development of crops. When conducting agricultural production in saline-alkali soil areas, the primary task is to optimize the soil environment, improve soil fertility, and enhance the tolerance of crops to saline-alkali stress through scientific soil improvement methods.

[0003] As a key technological innovation, saline-alkali soil conditioners are designed to precisely improve the characteristics of saline-alkali soils. Such conditioners effectively regulate soil properties through a series of complex chemical and physical mechanisms, including but not limited to:

[0004] Salt ion replacement technology: This improver is specially added with high-efficiency salt ion replacement ingredients, which can undergo selective replacement reactions with harmful salt ions in the soil, dissociate harmful salts from the solid phase of the soil and transfer them to the liquid phase, and finally excrete them out of the body through leaching or drainage, significantly reducing the salt concentration in the soil.

[0005] Ion exchange mechanism: The ion exchanger contained in the improver can selectively exchange with harmful salt ions in the soil, replacing them with ion forms that are harmless or have less impact on crops, thereby reducing salt damage and ensuring healthy growth of crops.

[0006] pH value regulation ability: Some components in saline-alkali soil conditioners are acidic. Long-term use can regulate the pH value of the soil, reduce the pH value in alkaline soil to an appropriate range, improve the acidity and alkalinity of the soil, and is beneficial to the growth of crops.

[0007] Organic matter supplementation: Some amendments are rich in organic matter. Their addition not only increases the organic matter content of the soil, but also improves the soil structure, enhances the soil's ability to retain water and fertilizer, and provides a richer nutritional basis for crop growth.

[0008] Soil microbial activation: Specific amendments can also promote the proliferation and activity of beneficial microorganisms in the soil. These microorganisms play an important role in soil material circulation, nutrient transformation, etc., further improving the biological activity and health level of the soil.

[0009] The selection and application of saline-alkali soil conditioners should be based on a comprehensive assessment of detailed soil analysis, crop needs and improvement objectives. The scientific and rational use of such conditioners can significantly improve the quality of saline-alkali soil, enhance its fertility and water holding capacity, provide excellent soil basic conditions for the stable growth and high yield of crops, and provide strong support for the sustainable development of agriculture. Summary of the invention

[0010] 1. Problems to be solved

[0011] In view of the problems existing in the above-mentioned prior art, the present invention provides a saline-alkali soil conditioner and a preparation method thereof. The method of use is combined with traditional fertilizers, and a modifier and a composite bacterial agent are introduced to play a good improvement role on saline-alkali land. The above-mentioned conditioner can not only effectively improve the quality of cucumbers, but also prevent and control the infection of cucurbitacinella.

[0012] 2. Technical solution

[0013] To solve the above problems, the present invention adopts the following technical solutions.

[0014] A saline-alkali soil conditioner, comprising the following raw materials in parts by weight:

[0015]

[0016] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0017]

[0018] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0019]

[0020] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0021] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0022] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0023] A method for preparing a saline-alkali soil conditioner comprises the following steps:

[0024] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0025] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0026] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0027] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 40%-55%.

[0028] 3. Beneficial effects

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The test shows that compared with comparative examples 1-5, the single plant yield (ranging from 7.6kg to 8.6kg) in Examples 1-5 is higher, the average fruit setting rate (ranging from 89% to 94%) is higher, and the average infection rate (ranging from 4.7% to 5.6%) is lower. It can be seen that the soil conditioners prepared in Examples 1-5 can effectively improve the quality of cucumbers and prevent and control the infection of the cucurbitacinella fungus; among them, the fertilizer soil conditioner prepared in Example 5 has relatively large significant differences in various indicators. The present invention is combined with traditional fertilizers, and modifiers and composite bacterial agents are introduced into traditional fertilizers, which has a good improvement effect on saline-alkali land. The above-mentioned modifier can not only effectively improve the quality of cucumbers, but also prevent and control the infection of the cucurbitacinella fungus. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific embodiments.

[0032] It should be noted that the EM bacterial agent was purchased from Dongyi Yang (Jinan) New Materials Co., Ltd., item number: 0133.

[0033] Example 1

[0034] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0035]

[0036] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0037] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0038] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0039] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0040] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0041] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0042] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0043] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 43%.

[0044] Example 2

[0045] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0046]

[0047] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0048] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0049] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0050] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0051] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0052] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0053] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0054] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 48%.

[0055] Example 3

[0056] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0057]

[0058]

[0059] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0060] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0061] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0062] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0063] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0064] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0065] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0066] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 55%.

[0067] Example 4

[0068] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0069]

[0070] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0071] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0072] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0073] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0074] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0075] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0076] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0077] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 45%.

[0078] Example 5

[0079] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0080]

[0081] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0082] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0083] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0084] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0085] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0086] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0087] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0088] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 40%.

[0089] Example 6

[0090] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0091]

[0092] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0093] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0094] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0095] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0096] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0097] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0098] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0099] In the preparation method of the saline-alkali soil conditioner, the specific gravity of the phosphorus tailings in the phosphorus tailings slurry in step (1) is 45%.

[0100] Example 7

[0101] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0102]

[0103] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0104] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0105] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0106] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0107] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0108] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0109] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0110] In the preparation method of the saline-alkali soil conditioner, the phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 50%.

[0111] Comparative Example 1

[0112] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0113]

[0114] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0115] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0116] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0117] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0118] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0119] (3) The mud cake obtained in step (2) is mixed with boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make the components uniform, and made into granular substances with uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0120] In the preparation method of the saline-alkali soil conditioner, the phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 50%.

[0121] Comparative Example 2

[0122] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0123]

[0124]

[0125] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0126] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0127] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0128] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0129] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0130] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0131] (3) The mud cake obtained in step (2) is mixed with ceramsite, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed by an ultrafine grinder, then stirred by a high-speed stirrer to make the components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0132] In the preparation method of the saline-alkali soil conditioner, the phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 50%.

[0133] Comparative Example 3

[0134] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0135]

[0136] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0137] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0138] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0139] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0140] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0141] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0142] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed by an ultrafine grinder, then stirred by a high-speed stirrer to make the components uniform, and made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0143] In the preparation method of the saline-alkali soil conditioner, the phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 50%.

[0144] Comparative Example 4

[0145] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0146]

[0147] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows:

[0148] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0149] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0150] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0151] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0152] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0153] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed by an ultrafine grinder, then stirred by a high-speed stirrer to make its components uniform, made into granular substances of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0154] In the preparation method of the saline-alkali soil conditioner, the phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 50%.

[0155] Comparative Example 5

[0156] The saline-alkali soil conditioner comprises the following raw materials in parts by weight:

[0157]

[0158]

[0159] The saline-alkali soil conditioner and the phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3, whose parameters are as follows:

[0160] The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

[0161] The saline-alkali soil conditioner and the ceramsite have a particle size range of 1-5 mm.

[0162] The preparation method of the saline-alkali soil conditioner comprises the following steps:

[0163] (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry;

[0164] (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake;

[0165] (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, and chitosan oligosaccharide, and mixed in a mixing box, and then ultrafinely crushed by an ultrafine grinder, and then stirred by a high-speed stirrer to make its components uniform, and then made into granular materials of uniform size by a vacuum granulator, and then passed through a vacuum packaging machine to finally obtain a granular saline-alkali soil conditioner.

[0166] In the preparation method of the saline-alkali soil conditioner, the phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 50%.

[0167] Example 8

[0168] The soil conditioners prepared in Examples 1-7 and Comparative Examples 1-5 were selected and tested as follows:

[0169] The specific test method is as follows: a cucumber test site in Hengshui, Hebei Province (with a total salt content of 0.45%) was selected, and healthy cucumber vines (in the early flowering stage, cucumber seedlings were purchased from Tianjin Deruite Seed Co., Ltd., variety "open-field cucumber seeds-Deruite 10") were transplanted, and then fertilized (1 ppm of cucurbitacin and 0.03 kg of 19-19-19 macronutrient water-soluble fertilizer per square meter). Three days later, the above-mentioned soil conditioner was applied (0.1 kg of soil conditioner per square meter of saline-alkali land), and then an infection test of cucurbitacin was carried out during the cucumber harvest period, the cucumber traits were observed, the cucumber yield was measured, and the soil pH was measured.

[0170] Table 1 Test report

[0171]

[0172]

[0173] The test shows (combined with Table 1), compared with comparative examples 1-5, the yield per plant in Examples 1-7 is higher (ranging from 7.6kg to 8.8kg), the average fruit setting rate (ranging from 89% to 94%) is higher, the average infection rate (ranging from 4.5% to 5.6%) is lower, the soil pH (ranging from 8.23 ​​to 8.24), and the soluble salt content (ranging from 0.37% to 0.39%). It can be seen that the soil conditioner prepared in Examples 1-7 can effectively improve the quality of cucumbers and prevent and control the infection of the cucurbitacinella fungus; among them, the soil conditioner prepared in Example 6 has relatively large significant differences in various indicators. Examples 1-7 have significant effects on improving the yield per plant, average infection rate, and average fruit setting rate of cucumbers, and have a positive effect on soil pH and soluble salt content.

[0174] In summary, the present invention introduces modifiers and composite bacterial agents into traditional basic fertilizers, which play a good role in improving saline-alkali land. The above fertilizers can not only effectively improve the quality of cucumbers, but also prevent and control the infection of cucurbitacinella.

[0175] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0176] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A saline-alkali soil conditioner, characterized in that: In parts by weight, the following raw materials are included:

2. The saline-alkali soil conditioner according to claim 1, characterized in that: In parts by weight, the following raw materials are included:

3. The saline-alkali soil conditioner according to claim 1, characterized in that: In parts by weight, the following raw materials are included:

4. The saline-alkali soil conditioner according to claim 3, characterized in that: The phosphate tailings are in fine powder form with an apparent density of 2.8 g / cm 3 , whose parameters are as follows: The calcium oxide content is 45.6%, the silicon dioxide content is 18.2%, the magnesium oxide content is 17.5%, the iron oxide content is 4.79%, and the phosphorus pentoxide content is 13.91%.

5. The saline-alkali soil conditioner according to claim 3, characterized in that: The particle size range of the ceramsite is 1-5 mm.

6. A method for preparing a saline-alkali soil conditioner, comprising the following steps: (1) slurrying the phosphorus tailings through a slurry generator to obtain phosphorus tailing slurry; (2) passing the phosphorus tail slurry obtained in step (1) through a filter press to obtain a mud cake; (3) The mud cake obtained in step (2) is mixed with ceramsite, boric acid, yeast metabolites, modified polyaspartic acid, chitosan oligosaccharide, and EM bacterial agent, mixed and proportioned in a mixing box, then ultrafinely crushed with an ultrafine grinder, then stirred with a high-speed stirrer to make its components uniform, and made into granular substances of uniform size by a granulator, and then passed through a packaging machine to finally obtain a granular saline-alkali soil conditioner.

7. The method for preparing the saline-alkali soil conditioner according to claim 6, characterized in that: The phosphorus tailings slurry in step (1) has a phosphorus tailings specific gravity of 40%-55%.

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