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Determining method of light compensation utilization of phalaris arundinacea in reed and phalaris arundinacea community

A determination method and a technology for thorn grass, applied in the field of efficient utilization of light resources in the vertical distribution of plants

Inactive Publication Date: 2016-07-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quantitative calculation method of the compensation utilization rate has not been reported yet.

Method used

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  • Determining method of light compensation utilization of phalaris arundinacea in reed and phalaris arundinacea community
  • Determining method of light compensation utilization of phalaris arundinacea in reed and phalaris arundinacea community
  • Determining method of light compensation utilization of phalaris arundinacea in reed and phalaris arundinacea community

Examples

Experimental program
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Effect test

Embodiment 1

[0020] On May 5, 2015, the weather was fine, and the reed grass community was selected. The sample area was 1m×1m, the height of the reed was about 2.0m, and the density was 25 plants / m 2 , the height of the grass is about 1.5m. Follow the steps below to determine the method of light compensation utilization of phragmites in Phragmites bulrushes community.

[0021] (1) Use the LI-6400 portable photosynthetic instrument produced by LI-COR Company of the United States to measure the middle part of the third expanded leaf below the top. Using the artificial light source configured by the instrument, the time is 8:00, 10:00, 12:00, 14:00, 16:00, and the light intensity gradient is 0, 20, 50, 100, 150, 200, 400, 600, 800 , 1000, 1200, 1500, 1800, 2000, 2200, 2500μmolm -2 the s -1 , the system automatically records the net photosynthetic rate corresponding to different light intensities every 3 minutes to fit the light response curve. According to the coefficient of determinatio...

Embodiment 2

[0030] On May 5, 2015, the weather was fine, and the reed grass community was selected. The sample area was 1m×1m, the height of the reed was about 2.0 meters, and the density was 45 plants / m 2 , the height of the grass is about 1.5m. Follow the steps below to determine the method of light compensation utilization of phragmites in Phragmites bulrushes community.

[0031] (1) Use the LI-6400 portable photosynthetic instrument produced by LI-COR Company of the United States to measure the middle part of the third expanded leaf below the top. Using the artificial light source configured by the instrument, the time is 8:00, 10:00, 12:00, 14:00, 16:00, and the light intensity gradient is 0, 20, 50, 100, 150, 200, 400, 600, 800 , 1000, 1200, 1500, 1800, 2000, 2200, 2500μmolm -2 the s -1 , the system automatically records the net photosynthetic rate corresponding to different light intensities every 3 minutes to fit the light response curve. According to the coefficient of determ...

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Abstract

The invention discloses a determining method of light compensation utilization of phalaris arundinacea in a reed and phalaris arundinacea community and belongs to the field of efficient utilization of light resources in vertical distribution of plants. The method comprises the following steps that phalaris arundinacea under reed canopies in the active growth stage in the reed and phalaris arundinacea community is selected, an artificial light source is utilized for carrying out light response curve fitting on phalaris arundinacea blades, illumination intensity of a surface layer and illumination intensity of the periphery of phalaris arundinacea in a no-shelter environment are tested respectively, according to a light response curve of phalaris arundinacea, the net photosynthetic rate possessed by phalaris arundinacea under the two kinds of illumination intensity and the ratio of the two kinds of illumination intensity are calculated, accordingly, the light compensation utilization rate of phalaris arundinacea under the reed canopies is estimated, and then the suitable density of reeds in the reed and phalaris arundinacea community can be determined. The method is simple and easy to implement, data is accurate and stable, and the method can be used for determining light compensation utilization of plants under canopies in the community with the vertical distribution feature.

Description

Technical field: [0001] The invention relates to a method for determining light compensation and utilization of bulrush grass in a reed ragweed community, and belongs to the field of high-efficiency utilization of light resources in vertical distribution of plants. Background technique: [0002] Phalarisherba is mainly distributed in temperate regions such as North America, Northern Europe and Asia, and is distributed in Northeast China, North China, Northwest China and East China. Lily grass likes wetness and often grows along rivers, lakes, low-lying lands and swamps. It has the characteristics of high yield, rich in protein, cellulose and minerals, and is a high-quality forage. In addition, even though weeds and reeds are considered as invasive species in North America and are controlled, in Europe they are widely used to build plant communities in constructed wetlands due to their high decontamination capabilities. Start to take advantage. However, both reeds and weed...

Claims

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Application Information

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IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 付为国赵云王凡坤滕博群王雨轩
Owner JIANGSU UNIV
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