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Method for breaking hard seeds of astragalus mongholicus

A technology of Astragalus seeds and Astragalus mongolica, which is applied in the directions of seed and rhizome treatment, application, agriculture, etc., can solve problems such as research on seed emergence morphology, and achieve the effect of improving permeability

Pending Publication Date: 2021-04-16
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Predecessors laser treated alfalfa and found that the germination potential of alfalfa seeds irradiated by laser reached 78% in the second or third day, but they did not know the specific process of laser treatment of Astragalus mongolica seeds and the location and depth of perforation. The effect of germination rate, etc. was studied, and the effect of seed emergence morphology was not studied in depth

Method used

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  • Method for breaking hard seeds of astragalus mongholicus

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for breaking the hardness of Astragalus mongolica seeds, the method is:

[0026] S1 selects astragalus seeds of uniform size; the diameter of the seeds is 2.5cm to 2.9cm;

[0027] S2 Use a laser engraving machine to laser treat Astragalus seeds, the laser power is 1200mW, and the laser treatment depth is 0.4mm;

[0028] The laser volume of the laser engraving machine is 153×153×145mm, and the four process parameters are as follows:

[0029] 1) Selection of engraving mode: the engraving mode includes "black and white" or "discrete"; the "discrete" mode will output the picture as a discrete image, and engrave in the form of a fine grid; the "black and white" mode maintains the continuity of the picture for engraving;

[0030] 2) Contrast: the range is 0~253, which measures the ratio of black and white of the image, which is related to the color difference of the imported image;

[0031] 3) Engraving power: the laser head power is 3000mW, and the range is 40%; ...

Embodiment 2

[0036] Connect the device, import the design drawing into the software, and set the software parameters: choose "black and white" for laser engraving mode, and the default option for contrast. Set laser engraving power 20%, 40%, 60%, 80%, 100%, corresponding to actual power 600mW, 1200mW, 1800mW, 2400mW, 3000mW; select laser engraving depth 20%, 40%, 60%, 80%, 100 %, corresponding to the actual depth of 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm. Design and set up 25 groups of treatments, with Astragalus seeds without laser treatment as the control, a total of 26 groups of different treatment methods were set up, and the experimental factor levels are as follows.

[0037] Table 1 Different processing laser engraving machine parameters

[0038]

[0039]

[0040] Note: A0B0 is the control without laser treatment.

[0041] Each group was treated with 10g of astragalus seeds. Place the astragalus seeds in a single layer evenly on a 80×80cm wooden plate, select the “frame positioni...

Embodiment 3

[0047] The relationship between different laser treatment intensity and treatment time

[0048] Such as figure 2 As shown, the laser processing time is only related to the laser drilling depth, showing a linear positive correlation. When the treatment depth is 0.2mm, the unit area (cm 2 ) drilling takes 24.52s, and when the processing depth is 1mm, the processing time is 31.93s. The following formula can be obtained, and the processing time (s) can be calculated according to the processing depth (mm). It can be seen that the smaller the laser depth selected when processing seeds, the shorter the processing time.

[0049] T(s / cm 2 )=24.52+(X-0.2)*1.85

[0050] Note: T is the processing time, X is the processing depth (mm)

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Abstract

The invention discloses a method for breaking hard seeds of astragalus mongholicus and belongs to the technical field of seed treatment. The method comprises the following steps: selecting astragalus mongholicus seeds with uniform size, wherein a diameter of the seeds is 2.5 cm to 2.9 cm; and carrying out laser drilling on the astragalus mongholicus seeds by using a laser engraving machine, wherein a laser power is 1,100-1,300 mW and a drilling depth is 0.3-0.5 mm. High energy generated by a laser beam is used to destroy a seed coat structure, improve a seed coat permeability and thus breaks hardness of the seeds. Meanwhile, controllability of a laser is utilized, shapes and degrees of a damaged part can be designed and controlled, and performances such as a germination rate of the seeds, etc. are improved.

Description

technical field [0001] The invention belongs to the technical field of seed treatment, in particular to a method for breaking the hardness of Astragalus mongolica seeds. Background technique [0002] Astragalus membranaceus is a plant of the genus Astragalus in the leguminous family, and it is one of the base plants of the traditional Chinese medicine Astragalus. When cultivating Astragalus mongolica, the germination rate is often low due to the hard seeds. In order to solve this problem, the predecessors have carried out some treatments on the hard seeds of Astragalus membranaceus, trying to break the hardness of the seeds. Studies have shown that the germination rate of Astragalus membranaceus seeds can reach 64% and the germination potential can reach 34% when treated with 98% concentrated sulfuric acid for 30 minutes; Treatment of Astragalus seeds with 300mg / kg gibberellin can make the germination rate reach 24%, and the germination potential can reach 5.33%. The germi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/00
Inventor 董学会陈怡刘亚茹王萍孙文斌向秋燕
Owner CHINA AGRI UNIV
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