Quick induction and identification method for reddish brown iron films on plant root surfaces

An identification method and a reddish-brown technology, applied in the field of plant cultivation, can solve the problems of long induction time and small induction amount of the reddish-brown iron film on the root surface of plants, and achieve the effect of overcoming the long time and widening the shape.

Active Publication Date: 2014-11-26
深圳市杜高生物新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the defects of long induction time and small induction amount of r

Method used

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  • Quick induction and identification method for reddish brown iron films on plant root surfaces
  • Quick induction and identification method for reddish brown iron films on plant root surfaces
  • Quick induction and identification method for reddish brown iron films on plant root surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Rinse the root system of rice seedlings grown for 21 days in nutrient solution (conventional nutrient solution for rice cultivation) with deionized water twice, and then replace the rice with a phosphorus-iron ratio (the molar concentration ratio of phosphate and ferrous ions) of 1:3 Cultivate in nutrient solution for 2 days (using rice nutrient solution containing normal phosphorus concentration as a control, the nutrient solution formula is slightly modified on the basis of the complete nutrient solution formula proposed by Yoshida et al. (1976), and the complete nutrient solution formula is: NH 4 NO 3 0.429 mmol·L -1 , Ca(NO 3 ) 2 4H 2 O 1mmol·L -1 , MgSO 4 ·7H 2 O 1.667 mmol·L -1 、KH 2 PO 4 1 mmol·L -1 、K 2 SO 4 0.513 mmol·L -1 ; Fe(Ⅲ)-EDTA 50 μmol L -1 , MnSO 4 9.1μmol·L -1 , ZnSO 4 0.15 μmol L -1 、CuSO 4 0.16 μmol L -1 , (NH 4 ) 4 MoO 24 4H 2 O 0.52 μmol L -1 、H 3 BO 3 19 μmol L -1 ), a large number of reddish-brown iron fi...

Embodiment 2

[0045] Rinse the root system of rice seedlings grown for 21 days in nutrient solution (conventional nutrient solution for rice cultivation) with deionized water twice, and then replace the rice with a phosphorus-iron ratio (the molar concentration ratio of phosphate and ferrous ions) of 1:5 Cultivate in nutrient solution for 2 days (using rice nutrient solution containing normal phosphorus concentration as a control, the nutrient solution formula is slightly modified on the basis of the complete nutrient solution formula proposed by Yoshida et al. (1976), and the complete nutrient solution formula is: NH 4 NO 3 0.429 mmol·L -1 , Ca(NO 3 ) 2 4H 2 O 1mmol·L -1 , MgSO 4 ·7H 2 O 1.667 mmol·L -1 、KH 2 PO 4 1 mmol·L -1 、K 2 SO 4 0.513 mmol·L -1 ; Fe(Ⅲ)-EDTA 50 μmol L -1 , MnSO 4 9.1μmol·L -1 , ZnSO 4 0.15 μmol L -1 、CuSO 4 0.16 μmol L -1 , (NH 4 ) 4 MoO 24 4H 2 O 0.52 μmol L -1 、H 3 BO 3 19 μmol L -1 ), a large number of reddish-brown iron fil...

Embodiment 3

[0047] Rinse the root system of rice seedlings grown for 21 days in the nutrient solution (conventional nutrient solution for rice cultivation) with deionized water twice, and then replace the rice with a phosphorus-iron ratio (the molar concentration ratio of phosphate and ferrous ions) of 1:8 Cultivate in nutrient solution for 2 days (using rice nutrient solution containing normal phosphorus concentration as a control, the nutrient solution formula is slightly modified on the basis of the complete nutrient solution formula proposed by Yoshida et al. (1976), and the complete nutrient solution formula is: NH 4 NO 3 0.429 mmol·L -1 , Ca(NO 3 ) 2 4H 2 O 1mmol·L -1 , MgSO 4 ·7H 2 O 1.667 mmol·L -1 、KH 2 PO 4 1 mmol·L -1 、K 2 SO 4 0.513 mmol·L -1 ; Fe(Ⅲ)-EDTA 50 μmol L -1 , MnSO 4 9.1μmol·L -1 , ZnSO 4 0.15 μmol L -1 、CuSO 4 0.16 μmol L -1 , (NH 4 ) 4 MoO 24 4H 2 O 0.52 μmol L -1 、H3 BO 3 19 μmol L -1 ), a large number of reddish-brown iron f...

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Abstract

The invention belongs to the field of plant cultivation and particularly discloses a quick induction and identification method for reddish brown iron films on plant root surfaces. The method comprises the steps that according to the characteristics of different growth media, a specific method is selected to adjust the phosphorus-to-iron ratio of the growth media, so that the iron films are induced to form on the plant root surfaces quickly. The method overcomes the defects that in the prior art, time for inducing the iron films is long, and the induced iron films are small in content; the method plays a very important role in repairing aquatic plants in agricultural production or preventing pollution by heavy metal and organic pesticide and ensuring food safety. The invention further creatively provides the quick identification method for the reddish brown iron films on the plant root surfaces. The method is ingenious in thought and easy to implement and has great significance in discussion about the iron films on the root surfaces and research of the iron films on plant self-protection or environmental safety and other aspects.

Description

technical field [0001] The invention relates to the field of plant cultivation, in particular to a method for rapidly inducing and identifying reddish-brown iron plaques on plant root surfaces. Background technique [0002] Iron coating on the root surface is an important mechanism for aquatic plants to adapt to environmental stress. Many aquatic plants can form iron mantles, such as rice ( Oryza sativa L.), Carex ( Carex tristachya L.), cattail ( Typha latifolia L.), Reed ( Phragmites australis L.), Lily ( Potamogeton crispus L.) etc. The rhizome aeration tissue of aquatic plants is particularly developed, which can transport oxygen in the atmosphere to the root system through the leaves, and then release this part of oxygen and other oxidative substances to the rhizosphere environment through the root system, so that the reducing substances ( Such as Fe 2+ , Mn 2+ , organic matter, etc.) oxidation [such as 4Fe 2+ +O 2 +10H 2 O=4Fe(OH) 3 +8H + ], result...

Claims

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Application Information

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IPC IPC(8): A01G31/00A01G7/06G01N33/00
Inventor 沈宏傅友强
Owner 深圳市杜高生物新技术有限公司
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