WO2018119640A1

WO2018119640A1 - Fertilizer for improving alkali soil

Info

Publication number: WO2018119640A1
Application number: PCT/CN2016/112325
Authority: WO
Inventors: 王璐
Original assignee: 王璐
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2018-07-05

Abstract

A fertilizer for improving alkali soils is obtained by mixing the following raw materials, all in parts by weight: 40-60 parts of crop straw powder, 30-50 parts of crop carbonized powder, 15-26 parts of NPK compound fertilizer, 14-23 parts of urea, 15-28 parts of salt adsorbent, and 1-3 parts of complex microbial agents. In addition to the effects of both inorganic and organic fertilizers, the fertilizer is more effective in providing complete improvement of the source of soil organic microorganisms and the acidity and alkalinity of the soils. The fertilizer can also produce active substances, stimulate crop growth, fix atmospheric nitrogen, participate in transformation of nutrients, and promote absorption of nutrients by crops, increase soil buffering performance, improve acidic soil, and modify the alkali soils.

Description

Improved fertilizer for saline soil

Technical field

[0001] The present invention relates to a fertilizer for improving saline soil.

Background technique

[0002] Soil salinization is a worldwide problem, with an area of nearly 1 billion hectares of saline-alkali land worldwide. According to China's second soil census data, the saline-alkali land area is about 527 million mu, of which 0.88 billion mu of saline-alkali land is mainly distributed in arid and semi-arid areas in North China, Northwest China and Northeast China. Taking Inner Mongolia as an example, the amount of saline-alkali arable land has reached nearly 7 million mu. In the past ten years, due to improper irrigation, the area of secondary salinization of soil has increased at a rate of 15-20 million mu per year, resulting in a decrease in the area of arable land. The area of cultivated land in China is decreasing, and the population is increasing year by year. It is expected to reach 1.6 billion by 2030. In order to meet the needs of the newly added 300 million people, the total output of China's agricultural products must be further increased. Ways to increase the total output of agricultural products, by expanding the area of cultivated land and increasing the yield per unit area, in the case of serious shortage of cultivated land in China, the salinization of soil resources, improvement of the ecological environment, expansion of cultivated land area is to increase the total grain output and agricultural sustainability. The need for development.

[0003] Measures to control saline-alkali land include water improvement measures (irrigation, drainage, siltation, rice planting, seepage prevention, etc.); agricultural improvement measures (leveling land, improved tillage, soil application, fertilization, sowing, crop rotation, intercropping, etc.) ; biological improvement measures (planting salt-tolerant plants and pastures, green manure, afforestation, etc.); and chemical improvement measures (application of improved substances such as gypsum, phosphogypsum, calcium sulfite, etc.). Because each measure has a certain scope and conditions. Therefore, it is necessary to adapt to local conditions and comprehensively manage. The current organic fertilizer reform has been a successful experience.

technical problem

[0004] The technical problem to be solved by the present invention is to provide a green fertilizer for improving saline soil.

Problem solution

Technical solution

[0005] In order to solve the above technical problem, the technical solution adopted by the present invention is:

[0006] The improved saline-alkali slow-release fertilizer provided by the invention is prepared by mixing the following raw materials, all parts by weight: 40-60 parts of crop orange stalk powder; 30-50 parts of crop carbonized powder, NPK compound fertilizer 15 -26 servings; urine 14-23 parts; 15-28 parts of salt adsorbent; 1-3 parts of compound microbial agent.

[0007] The crop carbonized powder of the present invention is prepared by carbonizing crop orange stalks at 500 ° C in a carbonization furnace for 1 h.

The salt adsorbent is selected from the group consisting of diatomaceous earth, calcium oxide, porous ceramics, hollow glass beads, zeolites, and perlite.

Further, in order to enhance the adsorption effect, the formulation of the present invention may further comprise 3-5 parts of titanium dioxide.

[0010] The first application of the crop carbonized powder is added to the improved fertilizer, and the crop carbonized powder is a carbonized product of the crop orange stalk at a high temperature. On the one hand, it has good adsorption performance, and the same, it is also good in itself. organic fertilizer.

[0011] The present invention also provides a method of preparing the above fertilizer, comprising the following steps:

[0012] (1) The crop orange stalk powder and the compound microbial agent are compounded, and the fermentation is carried out at 30-40 degrees Celsius for 2-3 days. [0013] (2) The remaining components are mixed in proportion and stirred uniformly.

[0014] In the same way, the present invention provides a method for improving a saline-alkali land by using the fertilizer, specifically: sprinkling the product compounded in the above step (1) into a saline-alkali soil, and mixing the fertilizer with the soil through an agricultural machine, 1 After 3 months, the mixture of step (2) is applied to the saline soil.

Advantageous effects of the invention

Beneficial effect

[0015] The present invention combines the effects of inorganic and organic fertilizers, and more effectively provides a thorough improvement of the source of soil organic microorganisms and the acidity and alkalinity of the soil, and also can produce active substances, stimulate crop growth, and fix nitrogen in the air. It is involved in the conversion of nutrients and promotes the absorption of nutrients by crops; it can increase soil buffering properties, improve acid soils, and transform saline-alkali soils.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1

[0017] The modified saline-alkali slow-release fertilizer provided in the present embodiment is prepared by mixing the following raw materials, all parts by weight: 60 parts of crop orange stalk powder; 50 parts of crop carbonized powder, 26 parts of NPK compound fertilizer; 23 copies ; 28 parts of salt adsorbent; 3 parts of compound microbial agent.

[0018] The crop carbonized powder is prepared by carbonizing the crop orange stalk at 500 ° C in a carbonization furnace for 1 h.

[0019] The salt adsorbent is selected from the group consisting of diatomaceous earth, calcium oxide, and porous ceramics, and the ratio of the three is 1:1:1.

[0020] A method of preparing the above fertilizer, comprising the steps of:

[0021] (1) Compounding the crop orange stalk powder and the composite microbial agent, and fermenting and culturing at 30-40 degrees Celsius for 2-3 days [0022] (2) mixing the remaining components in proportion and stirring uniformly.

[0023] In the same embodiment, the present embodiment provides a method for improving saline-alkali soil by using the fertilizer, specifically: sprinkling the product compounded in the above step (1) into a saline-alkali soil, and mixing the fertilizer with the soil through an agricultural machine. After 2 months, the mixture of step (2) is applied to the saline soil.

[0024] Example 2

[0025] The modified saline-alkali slow-release fertilizer provided in the present embodiment is prepared by mixing the following raw materials, all parts by weight: 40 parts of crop orange stalk powder; 30 parts of crop carbonized powder, 15 parts of NPK compound fertilizer; 14 parts; 15 parts of salt adsorbent; 1 part of compound microbial agent.

[0026] The crop carbonized powder is prepared by carbonizing the crop orange stalk at 500 ° C in a carbonization furnace for 1 h.

[0027] The salt adsorbent is selected from any combination of calcium oxide, porous ceramics, hollow glass beads, and zeolite.

[0028] The method of using the fertilizer is as in Example 1.

Embodiment 3

[0030] The modified saline-alkali slow-release fertilizer provided in the present embodiment is prepared by mixing the following raw materials, all parts by weight: 55 parts of crop orange stalk powder; 46 parts of crop carbonized powder, 21 parts of NPK compound fertilizer; 20 parts; 23 parts of salt adsorbent; 2 parts of compound microbial agent; 5 parts of titanium dioxide.

[0031] The crop carbonized powder is prepared by carbonizing the crop orange stalk at 500 ° C in a carbonization furnace for 1 h.

[0032] The salt adsorbent is selected from any combination of diatomaceous earth, calcium oxide, hollow glass beads, and zeolite.

[0033] The method of using the fertilizer is as in Example 1.

[0034] Example 4 fertilizer efficiency test

[0035] The fertilizer of the third embodiment is applied as a base fertilizer to the soil, the amount of fertilizer is 40 kg per mu, and the test area is 100 mu. After the fertilizer of the third embodiment is applied, after the second and third year crops are harvested respectively. Soil samples were collected for nutrient analysis to study the effects of slow-release fertilizers for saline-alkali improvement on soil fertility and improvement. The results showed that after the application of the fertilizer of Example 3, the soil salt segregant was improved, and the total soluble salt and conductivity of the special fertilizer area were significantly reduced compared with the conventional fertilizer area. It decreased by 30.21% and 15.68%, and decreased by 39.65% and 30.24% in the third year respectively, indicating that the improvement effect of saline-alkaline soil was more obvious after continuous application; soil organic matter increased after two years of continuous cropping than conventional fertilization area 20.39% (relative content); soil pH (pH) decreased from 9.21 before test to 7.38.

Claims

Claim

[Claim 1] A fertilizer for improving saline-alkali soil, which is obtained by mixing the following raw materials, all in parts by weight: 40-60 parts of crop orange stalk powder; 30-50 parts of crop carbonized powder, NPK composite 15-26 parts of fertilizer; 14-23 parts of urea; 15-28 parts of salt adsorbent; 1-3 parts of compound microbial agent.

[Claim 2] The slow release fertilizer according to claim 1, wherein the crop carbonized powder is prepared by carbonizing the crop orange stalk at 500 ° C in a carbonization furnace for 1 hour.

[Claim 3] The slow release fertilizer according to claim 1, wherein the salt adsorbent is selected from the group consisting of diatomaceous earth, calcium oxide, porous ceramics, hollow glass beads, zeolite, and perlite.

[Claim 4] The slow release fertilizer according to claim 1, further comprising 3-5 parts of titanium dioxide.