CN202471460U

CN202471460U - Root system secretion collecting device

Info

Publication number: CN202471460U
Application number: CN2012201019533U
Authority: CN
Inventors: 沈禹颖; 周莹; 王先之
Original assignee: Lanzhou University
Current assignee: Lanzhou University
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2012-10-03
Anticipated expiration: 2022-03-16

Abstract

The utility model discloses a collecting device which is used for collecting a plant root system secretion and is especially used for collecting the generated root system secretion in a potted plant growth process. The root system secretion collecting device provided by the utility model is composed of a plant container, a funnel positioned below the plant container, a connecting pipeline, a valve, a pipe column, a U-shaped connecting pipe and a tee fitting, wherein the connecting pipeline is communicated with a funnel lower pipe, the valve is positioned on the connecting pipeline, the pipe column is arranged at the downstream of the valve on the connecting pipeline and is provided with absorbent resin, the U-shaped connecting pipe is positioned on the down stream of a glass pipe column and the other opening of the U-shaped connecting pipe is positioned on the upper surface of the plant container, and the tee fitting is arranged on the middle of the U-shaped connecting pipe, the bottom of the plant container is communicated with a hole of the funnel at the lower part of the plant container, and a glass wool is placed on the bottom of the plant container; and a by-pass pipe of the tee fitting is communicated with a suction pump, and a collector is formed.

Description

A kind of root exudates gathering-device

Technical field

The utility model relates to a kind of secretions from plant roots that is used to collect, especially for the gathering-device of collecting the root exudates that is produced in the potted plant growth course.

Background technology

Root system is the vitals that plant and external environment are carried out material and energy exchange; Root exudates is that root system of plant is discharged in the surrounding environment through metabolism and non-metabolic pathway, the potpourri of being made up of secondary metabolins such as nascent metabolin such as sugar of a great variety, that quantity is different, amino acid, organic acid and phenols and metabolin that some are not well-known.The secretion of root system of plant is a kind of normal physiological phenomena, and mainly being provides matter energy and information and to the adaptation of poor environment for plant growth, growth, reproduction.Root exudates is that plant acts on one of main mode of soil environment.It synthetic, discharge, in the growth and decline of rhizosphere dynamically and to the influence of soil property, microbial activity and growth and development of plants etc., all have important theoretical research and be worth and practice significance.Because the secretions from plant roots kind is complicated, content is low, the research of secretions from plant roots is the hot issue of studying in the world always, and the utility model provides a kind of gathering-device of secretions from plant roots.

Disclose many being used in the Chinese patent and collected the device of secretions from plant roots, as:.200810064712,200820090461.2,200910229736.5 etc.But deficiency of the common existence of present widely used root exudates device: collect for the root exudates that helps in the plant growth overall process, plant species is implanted in the wide-mouth vial at the no end, bottleneck is connected with gatherer down.This has caused bigger influence to the normal growth of plant and the operability of experiment.Influenced the gas permeability of plant root system part on the one hand, and the light transmission of glass has then influenced the dark growth of normal root system of plant and cause light to coerce to the plant growth; On the other hand, because of the green plant requirement of experiment possesses strict illumination, temperature, damp condition; So basically all be in the greenhouse, to carry out; More should note the rational and efficient use in place, space, existing device commonly used causes space waste, and it is particularly evident to be awkward mobile shortcoming.If plant growth period long plant then be transplanted on the gatherer after needing plant to grow into certain phase, damage root system of plant, operation steps is numerous and diverse, causes people, material resources waste, and has a strong impact on the accuracy of experiment.

Summary of the invention

The utility model provides a kind of prior art root system secretion not enough, that be applicable to potted plant gathering-device that overcomes.

The root exudates gathering-device of the utility model by the container of planting, be positioned at funnel below the container of planting, be communicated with funnel down pipe connecting line, be positioned at the valve on the connecting line; Be positioned at the valve downstream on the connecting line the tubing string that polymeric adsorbent is housed, be positioned at the glass tube column downstream and its another opening is positioned at the U-shaped connecting pipe on the container upper surface of planting; And a threeway that is arranged at U-shaped connecting pipe middle part constitutes; Wherein: the bottom of the container of planting has the hole that is communicated with funnel below it, and on the bottom of container of planting, is placed with one deck glass wool; The shunt valve of threeway is communicated with aspiration pump, so forms a gatherer.

Also be provided with in a kind of root exudates gathering-device of the utility model with what rigid material constituted and be used for fixing setting by the container of planting, funnel, connecting pipeline, and the support of the gatherer that constitutes of U-shaped pipe, can adopt metal material to process like this support.

Each connecting line is a glass tube in a kind of root exudates gathering-device of the utility model, and the coupling part of each pipeline adopts teflon pipe to connect, and valve adopts the glass cock valve.

The support of the utility model can support whole gatherer, can keep the stable of whole device, and makes things convenient for integral body to remove to move, move, simultaneously also can be easily with the fixing container taking-up or lay again of planting it on.Like this can be so that experimental implementation satisfies different requirement of experiment.

Evenly punch (can do the bottom permeable hole) in the bottom of the container of planting of the utility model, shop one deck hydrochloric acid embathes the glass wool of removing organic impurities, puts into plantation matrix such as silica sand again, can cultivate test plant by the normal procedure plantation afterwards.If behind plant fixing, begin to collect continuously root exudates, can the container of planting be placed on the support for a long time and collect continuously, if regularly timing is collected, then can go up undercarriage at any time, convenient to operation, province ground saves time.On the one hand can be by the strict control of requirement of experiment illumination, temperature, damp condition, convenient centralized management does not cause the plant growth differences, does not influence the normal dark growth course of root system of plant; Do not need fully on the other hand to transplant, guarantee the complete of root system of plant, reduce experimental error.

The utility model is cultivated plant with root exudates and is collected separating of two processes, also can make plant cultivation and root exudates collect these two processes simultaneously easily and carry out simultaneously, and can carry out different selections according to the actual needs of actual experiment.

Adopted glass tube owing to each connecting pipeline in the root exudates gathering-device of the utility model; And the coupling part of each pipeline adopts teflon pipe to connect; Valve adopts the glass cock valve; This material is minimum to the absorption of organic substance, does not react with acid, does not produce the organic impurities of non-secretion.To largely reduce experimental error thus, guarantee the accuracy of testing.

Description of drawings

Accompanying drawing is the structural representation of the utility model, and wherein: 1 is metal support, and 2 are the container of planting; 3 is glass funnel, and 4 is the teflon pipe of connecting line, and 5 is the glass cock valve; 6 is the glass tube column of interior dress polymeric adsorbent; 7 is the three-way pipe of external air pump, and its overhanging pipe end is used to connect aspiration pump, and 8 is U type glass tube.

Embodiment

The utility model is explained orally below in conjunction with accompanying drawing:

Visible by Fig. 1, the device of the utility model is by combining and the support of dismantling 5 plant container 2 and

collection tube

3,4,5,6,7 and 8 formations each other.An embodiment of the utility model is for collecting the device of potted plant alfalfa root system secretion; Its medium-height trestle 5 has adopted the reinforcing rod of diameter 7mm to process, and end plate becomes the quoit of a diameter 20cm on it, a diameter 35cm of following end plate quoit; Article two, straight steel bar and two quoit welding; Form the bracing frame of an inclination, another long limit of straight steel bar and two quoits weld in vertical state, and this steel bar also is used for fixing U-shaped pipe 8 except that forming support.Support height 80cm.The container 2 of planting can directly adopt the flowerpot of bore 22cm, footpath, end 15cm, opens 9 equally distributed holes at the bottom of the basin, the glass wool that the shop clean is crossed in the bore dia 3mm, basin, and the clover of in experiment, planting, used matrix is silica sand in the basin.Flowerpot is put into quoit card jail, support upper end.Connect a glass funnel 3 at the bottom of the basin, its bore is 16cm, and iron wire loop fixed suspension quoit on support is done with antirust thin wire in the middle part of funnel 3.Connect a 3# glass cock valve 5 under the funnel, the glass tube column 6 of dress polymeric adsorbent in stopcock connects for 5 times, the two ends of tubing string (being the top and bottom of resin) clogs with glass wool respectively.Glass tube column connects the end opening of U-shaped glass tube 8 for 6 times, and Open Side Down for U type glass tube 8 other ends, place as diagram plant container 2 above, be used to make liquid to be back in 2.The U-shaped pipe is fixed on the aforesaid upright steel bar.At three-way pipe 7 of indirect of U-shaped glass tube, the overhanging end of pipe 7 is used to connect electric air pump.The adjusting flow velocity is 1L/10min, on to connect a U mouth downward, the glass tube that both sides are not isometric, long end links to each other with the T pipe, and merges fixingly with right angle steel bar on the support, the short end of U type stretched into the basin mouth of planting.Add leacheate in the basin, open air pump, just can realize that leacheate circulates, the root exudates collection is adsorbed on the resin in the glass column.

All pipelines all use teflon pipe to connect in the device of the utility model, make airtight relatively connection between glass tube as far as possible, from connecting pipe, leak and react to prevent leacheate.All glass tube internal diameter 7mm, glass column internal diameter 2cm.

Claims

1. root exudates gathering-device; It is characterized in that device by the container of planting, be positioned at funnel below the container of planting, be communicated with funnel down pipe connecting line, be positioned at the valve on the connecting line; Be positioned at the valve downstream on the connecting line the glass tube column that polymeric adsorbent is housed, be positioned at the glass tube column downstream and its another opening is positioned at the U-shaped connecting pipe on the container upper surface of planting; And a threeway that is arranged at U-shaped connecting pipe middle part constitutes; Wherein: the bottom of the container of planting has the hole that is communicated with funnel below it, and on the bottom of container of planting, is placed with one deck glass wool; The shunt valve of threeway is communicated with aspiration pump.

2. the described a kind of root exudates gathering-device of claim 1 is characterized in that also being provided with in the device with what rigid material constituted and is used for fixing the container of planting, funnel, connecting pipeline and the support of U-shaped pipe.

3. claim 1 or 2 described a kind of root exudates gathering-devices is characterized in that described each connecting line is a glass tube, and the coupling part of each pipeline adopts teflon pipe to connect, and valve adopts the glass cock valve.