Method for improving utilization rate of phosphate fertilizer by utilizing combined action of nitrogen fertilizer and biochar

A combined action, biochar technology, applied in the agricultural field, can solve the problems of phosphorus accumulation, resource waste, environmental pollution, etc., and achieve the effect of promoting phosphorus circulation, increasing yield and reducing costs

Pending Publication Date: 2021-09-28
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Increasing the amount of fertilizer to meet the needs of crops will cause a large amount of phosphorus accumulation, and with seepage and surface runoff, it will cause waste of resources and pollution of the environment

Method used

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  • Method for improving utilization rate of phosphate fertilizer by utilizing combined action of nitrogen fertilizer and biochar
  • Method for improving utilization rate of phosphate fertilizer by utilizing combined action of nitrogen fertilizer and biochar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] In the invention, nitrogen fertilizer and biochar are evenly applied to the target soil according to a specific ratio, so as to realize the goal of inhibiting phosphorus loss and improving phosphorus availability, and further improving the utilization rate of phosphorus fertilizer.

[0103] The nitrogen fertilizer is urea.

[0104] The biochar is general-purpose 95% biochar base fertilizer.

[0105] The soil is sandy soil, fluvio-aquic soil or sandy ginger soil.

[0106] The specific ratio is nitrogen fertilizer content:biochar content=1:1-3:1.

[0107] The crops are wheat, sorghum or corn.

[0108] The economic crops are cotton, rapeseed or soybean.

[0109] The organic matter and porous structure in the biochar of the present invention seal phosphorus, reduce the loss of phosphorus, and after combined with nitrogen fertilizer, activate the activity of soil microorganisms, also change the physical and chemical properties of soil to a certain extent, and promote Trans...

Embodiment 2

[0111] The method for improving the utilization rate of phosphate fertilizer by using the combination of nitrogen fertilizer and biochar, specifically includes the following steps:

[0112] (1) Design and manufacture test soil columns, such as figure 2 shown;

[0113] (2) Select the sandy soil used for the test;

[0114] (3) Mix nitrogen fertilizer and biochar in the ratio of 1:1, 2:1, 3:1.

[0115] (4) uniformly mixing nitrogen fertilizer and biochar mixture with the soil sample in step (2) in step (3);

[0116] (5) the mixture in the step (4) is put into the soil column in the step (1);

[0117] (6) Detect available phosphorus content in the sandy soil after 24h;

[0118] (7) Use a peristaltic pump to rinse the sandy soil, and detect the total phosphorus content in the rinse solution after 3 hours

[0119] (8) Compare the available phosphorus content and total phosphorus content obtained in step (4) and step (7) with the available phosphorus content and total phosphoru...

Embodiment 3

[0122] Embodiment 3: as figure 2 As shown, the method of using the combination of nitrogen fertilizer and biochar to improve the utilization rate of phosphorus fertilizer includes the following steps:

[0123] (1) Design and manufacture test soil columns, such as figure 2 shown;

[0124] (2) Select the river tidal soil used in the test;

[0125] (3) Mix nitrogen fertilizer and biochar in the ratio of 1:1, 2:1, 3:1.

[0126] (4) uniformly mixing nitrogen fertilizer and biochar mixture with the soil sample in step (2) in step (3);

[0127] (5) the mixture in the step (4) is put into the soil column in the step (1);

[0128] (6) After 24 hours, the available phosphorus content in the river fluvo soil is detected;

[0129] (7) Use a peristaltic pump to rinse the river fluvo soil, and detect the total phosphorus content in the rinse solution after 3 hours.

[0130] (8) Compare the available phosphorus content and total phosphorus content obtained in step (4) and step (7) wi...

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Abstract

The invention belongs to the technical field of agriculture, and discloses a method for improving the utilization rate of a phosphate fertilizer by utilizing the combined action of a nitrogen fertilizer and biochar. The method for improving the utilization rate of the phosphate fertilizer by utilizing the combined action of the nitrogen fertilizer and the biochar comprises the step of uniformly applying the nitrogen fertilizer and the biochar into soil according to a specific ratio, wherein the nitrogen fertilizer is urea, and the biochar is a general 95% biochar base fertilizer. The invention provides the method for reducing the loss of phosphorus and improving the effectiveness of the phosphorus by utilizing combined application of the biochar and the nitrogen fertilizer, so the utilization rate of the phosphate fertilizer is improved. Based on the characteristics of a developed pore structure and abundant oxygen-containing functional groups of the biochar, the leaching loss of the biochar is reduced by utilizing the storage of phosphorus via organic matters in the biochar; and the combined action of the biochar and the nitrogen fertilizer can increase the activity of alkaline phosphatase, promote phosphorus circulation and improve the effectiveness of the phosphorus.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a method for improving the utilization rate of phosphorus fertilizer by utilizing the joint action of nitrogen fertilizer and biochar. Background technique [0002] At present: Phosphorus is one of the essential nutrients for plant growth and development. Like nitrogen and potassium, it is called a macroelement. Recent studies have shown that phosphorus can also reduce the mechanical resistance that causes crop yield reduction due to soil dryness or compaction Most of the phosphorus absorbed and utilized by plants comes from the soil, and the application of phosphorus fertilizer is a common method to increase phosphorus in the soil. The utilization rate of phosphorus in phosphorus fertilizer is very low, only about 15%, although the total phosphorus content of the soil is to a certain extent It will reflect the size of the soil phosphorus pool, but excessive applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/40C05G3/80
CPCC05C9/00C05G3/40C05G3/80C05D9/00
Inventor 武桂芝于宗民张成赵小二
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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