Method and device for determining plant transpiration efficiency precisely

A plant transpiration and efficiency technology, which is applied in the field of accurate measurement of plant transpiration efficiency, can solve the problems of expensive equipment and the impact of measurement results, and achieve the effects of low cost, batch measurement, and less root separation loss

Inactive Publication Date: 2009-06-24
INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are disadvantages that the method is indirect, the location of the sample has a great influence on the measurement result, and the equipment is very expensive (millions of dollars).

Method used

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  • Method and device for determining plant transpiration efficiency precisely
  • Method and device for determining plant transpiration efficiency precisely
  • Method and device for determining plant transpiration efficiency precisely

Examples

Experimental program
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Embodiment Construction

[0031] figure 1 , 2 , 3, 4 as can be seen, measuring device of the present invention is by airtight plant incubator 8, and sealing cover 3, airtight air pressure balance box 11 are combined to form, and filling substratum 9 in plant incubator 8, arranges on the sealing cover The culture solution is added to the hole 7 and the sealing plug 6, the connecting pipe 1 is set between the plant cultivation box 8 and the air pressure balance box 11, the sealing cover 3 is provided with a seedling hole and a sealing rubber ring 5, and there is an annular air chamber 2 at the edge of the sealing cover The protrusion communicates with the air pressure balance box.

[0032] The method example that the present invention accurately measures plant transpiration efficiency in detail below in conjunction with accompanying drawing:

[0033] 1. Culture preparation: Take a certain weight of dry medium (fine sand, soil or vermiculite), fill up the incubator, add nutrient solution to the medium a...

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Abstract

The invention provides a method and device for accurately measuring the transpiration efficiency of plants. The basic principle is to use a sealed cover to suppress the surface evaporation of the cultivation container (box) (to make it approach "zero") moisture, and measure the weight change of the growing plant cultivation box Obtain transpiration water consumption, take plant samples to obtain dry matter accumulation, and then calculate plant transpiration efficiency. The measuring device used in the present invention comprises a closed incubator, a closed air pressure balance box and a connecting pipe arranged between the two boxes, and a seedling hole is arranged on the upper surface of the incubator. The main advantages of the present invention are: effectively suppressing the water loss caused by soil evaporation, solving the problem of root respiration and oxygen supply under sealed conditions and the problem of pressure change regulation under sealed conditions, the quantitative addition of nutrients and water is accurate, and the water consumption and biomass of transpiration are guaranteed accurate weighing. The measuring device has the advantages of low cost, good sealing performance, short measuring time, and less root separation loss, which is beneficial to batch testing.

Description

technical field [0001] The invention relates to a method for accurately measuring the transpiration efficiency of plants and the device used, especially suitable for rapid and batch determination of the utilization of plant water in the growth process, providing a basis for water-saving agricultural research, belonging to biological physiological test methods and equipment technology field. Background technique [0002] Plant transpiration efficiency refers to the amount of dry matter formed by transpiration per unit mass of water during the growth and development of plants. There are differences between different plants and different varieties of the same plant. The commonly used unit is g kg -1 , is an important index to measure the water use of plants, and is an important physiological basis for the research of water-saving agriculture. Its measurement methods mainly include: [0003] Weighing method: within a certain period of time, transpiration water consumption / dry ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04G01N33/00C12Q1/02
Inventor 刘孟雨刘会灵
Owner INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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