Application of amino acid as soil phosphorus release agent

A technology of amino acid and phosphorus release, which is applied in the release of soil phosphorus. Amino acids are used as soil phosphorus release agents, which can solve the problems of no amino acids, reduce water and fertilizer loss, increase soil fertility, and improve colloidal properties.

Inactive Publication Date: 2012-02-15
SOUTHWEST UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far there is no research report on the use of amino acids as soil phosphorus release agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Glycine, iminodiacetic acid pure product and iminodiacetic acid crude product were compounded with phosphate fertilizer and potassium fertilizer respectively to form a double-effect compound fertilizer for fertilizer efficiency evaluation test. The results of rice pot experiments (Table 1) showed that all three were good organic nitrogen fertilizers. Compared with the control CK (no nitrogen fertilizer, normal application of phosphorus and potassium fertilizers), the yield of G, I, and D increased by 140.2%, 140.2%, and 170.7% respectively under the condition of N application rate of 50 mg / kg; N application rate was 100 mg / kg Under these conditions, the yields of G, I, and D increased by 225.0%, 310.9%, and 271.7%, respectively; under the condition of N application rate of 200mg / kg, the yields of G, I, and D increased by 328.3%, 339.1%, and 258.7%, respectively. The test results fully affirmed the nitrogen fertilizer efficiency of the three.

[0017] Table 1 Effects of...

Embodiment 2

[0020] Glycine, pure iminodiacetic acid and crude iminodiacetic acid were used as phosphorus-releasing and nitrogen-supplying double-effect fertilizers, and the fertilizer efficiency evaluation test was carried out. The results of rice pot experiments (Table 2) showed that all three were organic nitrogen fertilizers with phosphorus-releasing effects. Compared with the urea control CK with the same amount of nitrogen (200mg / kg), the amino acid, iminodiacetic acid pure product and iminodiacetic acid crude product treatment increased the yield by 7.7%, 11.9%, 16.1%, respectively, and the phosphorus absorption increased by 7.8% , 9.4%, 18.8%.

[0021] Table 2 Effects of no phosphorus application on rice seedling biomass and phosphorus uptake

[0022] deal with P 2 o 5 (mg / kg) dry weight (g / pot) （%） Total phosphorus (mg / pot) （%） CK 0 3.61 100.00 12.80 100.00 G 0 3.89 107.76 13.80 107.81 I 0 4.04 111.91 14.00 109.38 D 0 4.19 11...

Embodiment 3

[0024] Glycine, pure iminodiacetic acid and crude iminodiacetic acid were compounded with phosphate fertilizer to form a double-effect compound fertilizer for fertilizer efficiency evaluation test. The results of the rice pot experiment (Table 3) showed that the three were organic nitrogen fertilizers with significant phosphorus releasing effects. Under the same amount of nitrogen application, I0, D0, and G0 can still achieve the yield and phosphorus absorption of CK (applied with phosphorus fertilizer) even if no phosphorus fertilizer is applied. D0 increases production by 9.8%, and increases phosphorus absorption by 11.9%. I1 (applying 50% phosphorus in CK) can also increase phosphorus absorption by 9.4% compared with CK

[0025] Table 3 Comparison of rice seedling biomass and phosphorus uptake in different fertilizer sources without or less phosphorus application and phosphorus application control

[0026] deal with P 2 o 5 (mg / kg) dry weight (g / pot) （%） ...

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Abstract

The invention discloses a double-effect application of amino acid as a soil phosphorus release agent and a plant nitrogen fertilizer. An amino acid fertilizer capable of releasing soil phosphorus elements and simultaneously providing plant nitrogen fertilizers is prepared according to the application. The amino acid can be natural amino acid or proteolysis hydrolysate or artificially synthesized amino acid. The amino acid can be directly used as phosphorus release organic fertilizers and can also be matched with inorganic fertilizers to produce double-effect composite fertilizers. Pot cultureor field fertilizer effect experiments of corn, rice and vegetables all prove that the amino acid has the function of double-effect fertilizers, can be used as efficient nitrogen fertilizers and can also simultaneously replace phosphorus fertilizers, the absorption of crops on the phosphorus in the soil can be promoted, the phosphorus fertilizers are reduced or are not applied, and the phosphorusore resource exhausted crisis is greatly relieved.

Description

technical field [0001] The invention relates to the technical field of soil fertilizers, in particular to the release of soil phosphorus, specifically the use of amino acids as soil phosphorus release agents. Background technique [0002] Phosphorus is a non-renewable rare resource. In 2009, my country's phosphate rock output was 55 million tons, accounting for 35% of the world's total output of 100 million tons, ranking first in the world. Due to unreasonable "mining the rich and abandoning the poor", the recovery rate of phosphate rock is low, resulting in an annual reduction of more than 130 million tons of phosphate rock resources. The rate of consumption of phosphorus resources in my country is much higher than that of other countries. Based on this consumption rate budget, economically exploitable phosphate rock resources will be difficult to maintain for another 30 years. According to this development, my country's rich phosphorus ore will be exhausted before 2015. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
Inventor 尹应武张玲燕王正银万鹏孙瑞张双艳樊媛婷李远蓉赵玉芬陈怡
Owner SOUTHWEST UNIVERSITY
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