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CN-121514266-B - Root system protection and chromium enrichment strengthening device and method for planting chromium-polluted soil plants

CN121514266BCN 121514266 BCN121514266 BCN 121514266BCN-121514266-B

Abstract

The invention relates to the technical field of planting, and discloses a root system protection and chromium enrichment strengthening device and method for planting chromium-polluted soil plants, the structure of the device comprises a planting fixing device, a root system isolation device and a chromium enrichment device, the invention integrates three functions of physical planting fixing, root system isolation protection and repair strengthening of plants into a whole, improves the survival rate of planting chromium-enriched plants, and utilizes a coarse filtration layer, an adsorption conversion layer and a slow release layer with selective blocking function, can set up the protection barrier between plant root system and chromium contaminated soil to reduce the initial chromium exposure concentration of root system, show the survival rate and the early growth speed that improve the seedling, and be equipped with down the extension ring on planting fixing device, rotate on the universal ball with the help of the angle of clamp seat, can adjust the diameter of extension ring down, be applicable to the planting of the plant of different root system sizes and fix.

Inventors

  • HONG YOUWEI
  • CHEN YONGSHAN
  • WANG YING
  • XU JINGHUA
  • FENG YING

Assignees

  • 泉州师范学院

Dates

Publication Date
20260508
Application Date
20260116

Claims (6)

  1. 1. The device comprises a planting fixing device (1), a root isolating device (2) and a chromium enriching device (3), wherein the planting fixing device (1) is arranged at the inner bottom of the root isolating device (2), and the chromium enriching device (3) is arranged on the outer side wall of the root isolating device (2), and is characterized in that: The planting fixing device (1) comprises an upper fixing ring (11), a lower expansion ring (12) arranged right below the upper fixing ring (11), a plurality of groups of bearing mechanisms (15) arranged between the upper fixing ring (11) and the lower expansion ring (12), a plurality of bearing mechanisms (15) are arranged in a ring array, the inner side walls of the upper fixing ring (11) and the lower expansion ring (12) are connected with a binding belt (13), and a plurality of hollowed-out holes (14) are formed in the side wall of the binding belt (13); The root system isolation device (2) comprises a flowerpot base (21), exchange holes (22) formed in the side wall and the bottom of the flowerpot base (21), a plurality of clamping grooves (23) formed in the inner wall of the flowerpot base (21), a rough filtering layer (24) used for being in sliding clamping with the clamping grooves (23), and a plurality of trapezoid blocks (25) arranged on the outer wall of the rough filtering layer (24), wherein an adsorption conversion layer (26) and a slow release layer (27) are sequentially arranged on the inner wall of the rough filtering layer (24), and a multi-layer composite structure is formed between the rough filtering layer (24) and the adsorption conversion layer (26) and between the rough filtering layer and the slow release layer (27); The chromium enrichment device (3) comprises a liquid storage cavity (33) and a placement cavity (34) which are arranged in the chromium enrichment device (3), a sealing cover (31) which is arranged at the top of the chromium enrichment device (3) and is in threaded connection, a shunt tube (36) which is arranged in the liquid storage cavity (33), a micropump (37) which is arranged at one end of the shunt tube (36), and a plurality of guide tubes (32) which are arranged at the bottom of the shunt tube (36) and are connected, wherein a control unit (35) is arranged in the placement cavity (34); The upper fixing ring (11) comprises clamping blocks (111), bolt rods (112) and mounting grooves (113), a plurality of clamping blocks (111) are arranged on the top of the upper fixing ring (11), the clamping blocks (111) are symmetrically arranged in pairs, the bolt rods (112) are arranged between every two groups of clamping blocks (111) symmetrically, the mounting grooves (113) are formed in the top of the upper fixing ring (11), and the mounting grooves (113) can be fixedly arranged with the bearing mechanism (15); The lower expansion ring (12) comprises a left arc-shaped plate (121) and a right arc-shaped plate (122) which is arranged on one side of the left arc-shaped plate (121) and spliced, bolts (123) are arranged at two ends of the left arc-shaped plate (121) and the right arc-shaped plate (122), and sliding grooves (124) are formed in the left arc-shaped plate (121) and the right arc-shaped plate (122); The bearing mechanism (15) comprises a U-shaped seat (151), a universal ball (152) arranged on the U-shaped seat (151), a clamping seat (153) used for being rotationally clamped with the universal ball (152), and an adjusting bolt (154) arranged on the clamping seat (153), wherein a steering seat (155) is rotationally matched with the bottom of the clamping seat (153), a sliding block (156) is arranged at the bottom of the steering seat (155), and the sliding block (156) is clamped inside the sliding groove (124); The guide tube (32) comprises penetration holes (321) and a humidity sensor (322), a plurality of penetration holes (321) are formed in the side wall of one end of the guide tube (32) extending into the planting fixing device (1), and the humidity sensor (322) is arranged at the tail end of the guide tube (32).
  2. 2. The device for protecting and enriching chromium for planting chromium-contaminated soil plants according to claim 1, wherein the rough filtering layer (24) is made of non-woven fabrics with large pore diameters.
  3. 3. The plant-growing and chromium-enriching apparatus according to claim 2, wherein the adsorption conversion layer (26) is composed of a porous polymer matrix loaded with an active component and an active component, and the active component comprises zero-valent iron nanoparticles, modified layered double hydroxides and sulfide modification materials.
  4. 4. The device for protecting and enriching chromium according to claim 3, wherein the slow-release layer (27) is made of porous membrane of polylactic acid and starch which is compact, hydrophilic and good in biocompatibility.
  5. 5. The device for protecting root system and enriching chromium for planting chromium-contaminated soil plants according to claim 4, wherein a plurality of filter screens are arranged on the infiltration holes (321).
  6. 6. The application method of the root system protection and chromium enrichment strengthening device for planting chromium-polluted soil plants adopts the root system protection and chromium enrichment strengthening device for planting chromium-polluted soil plants according to claim 5, and the application method is as follows: s1, cleaning weeds in a chromium contaminated soil area, then adjusting the diameter of a lower expansion ring (12) on a planting fixing device (1) according to the size of a plant root system to be planted, and adding a chromium enrichment promoter into a liquid storage cavity (33) of a chromium enrichment device (3); S2, filling excellent planting seedling raising matrixes into flowerpot bases (21) of the planting fixing device (1) and the root system isolating device (2), planting chromium-enriched plant seedlings to be planted into the planting fixing device (1), supporting the seedlings through a plurality of latch rods (112), and placing the planting fixing device (1) after assembly into planting points in a chromium-polluted soil area; S3, setting a humidity threshold value through a control unit (35), feeding back data in real time through a humidity sensor (322), automatically adjusting the slow release rate of the accelerator by means of a micro pump (37), checking the residual amount of the chromium enrichment accelerator in the liquid storage cavity (33) every 15 days, and supplementing in time; s4, separating seedling root systems from chromium contaminated soil through a rough filtration layer (24), an adsorption conversion layer (26) and a slow release layer (27) on the root system separating device (2), and improving the survival rate and early growth speed of seedlings; s5, harvesting the overground parts of the plants to carry out chromium recovery treatment after the plants grow to the maturity.

Description

Root system protection and chromium enrichment strengthening device and method for planting chromium-polluted soil plants Technical Field The invention belongs to the field of planting, and particularly relates to a root system protection and chromium enrichment strengthening device and method for planting chromium-contaminated soil plants. Background The restoration and the safe utilization of chromium-polluted soil are important subjects in the current environmental protection field, chromium (Cr) is a common heavy metal pollutant in soil, has strong toxicity to plant roots, can inhibit plant growth, and reduces plant restoration efficiency; At present, in order to repair chromium-polluted soil, chromium-enriched plants are mostly used and planted on the chromium-polluted soil to absorb chromium ions, however, when the chromium-polluted soil is repaired by plants in the prior art, the planted plant seedling root system directly contacts high-concentration chromium soil, so that the plant root system is poisoned, the survival rate is low, the growth is slow, the plant root system is only dependent on the enrichment capability of the enriched plants, the repair period is long, and the repair effect on moderately and severely polluted soil is not ideal; the application provides a root system protection and chromium enrichment strengthening device and method for planting chromium-polluted soil plants, which improve the defects. Disclosure of Invention The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a root system protection and chromium enrichment strengthening device and method for planting chromium-polluted soil plants, which can protect planted plant root systems and strengthen the effect of chromium enrichment. In order to solve the technical problems, the invention adopts the following technical scheme: The device comprises a planting fixing device, a root isolating device and a chromium enriching device, wherein the planting fixing device is arranged at the inner bottom of the root isolating device and is positioned at the same center line with the root isolating device, and the chromium enriching device capable of promoting chromium enriching efficiency is arranged on the outer side wall of the root isolating device. In a specific implementation manner, the planting fixing device comprises an upper fixing ring, a lower extending ring, a binding belt, hollow holes and a bearing mechanism, wherein the lower extending ring which is positioned at the same center is arranged under the upper fixing ring, the upper fixing ring and the lower extending ring are connected through a plurality of groups of bearing mechanisms, a plurality of bearing mechanisms are arranged in an annular array, the upper fixing ring is connected with the binding belt on the inner side wall of the lower extending ring, and a plurality of hollow holes are formed in the side wall of the binding belt. In a specific implementation manner, the upper fixing ring comprises a clamping block, a bolt rod and a mounting groove, a plurality of clamping blocks are arranged on the top of the upper fixing ring in an array mode, the clamping blocks are symmetrically arranged in pairs, the bolt rod is arranged between every two groups of clamping blocks, the mounting groove is formed in the top of the upper fixing ring, and the mounting groove can be fixedly mounted with the bearing mechanism. In a specific implementation, the lower expansion ring comprises a left arc plate, a right arc plate, bolts and sliding grooves, wherein the right arc plate is spliced on one side of the left arc plate, so that the lower expansion ring is assembled, the two ends, connected with the right arc plate, of the left arc plate are all fixed through threads through the bolts, the sliding grooves are formed in the left arc plate and the right arc plate, and the sliding grooves are fixed with the bottom of the bearing mechanism through screws. In a specific implementation, the accepting mechanism includes U type seat, universal ball, presss from both sides tight seat, adjusting bolt, turns to seat and slider, the top both ends of U type seat are connected fixedly with the bottom of the fixture block on the last solid fixed ring, install the universal ball on the U type seat, it presss from both sides tight seat to rotate the block through the draw-in groove on the universal ball, it installs adjusting bolt to press from both sides tight seat, it has the seat to turn to press from both sides tight seat's bottom through bearing bolt normal running fit, the slider is installed to the bottom that turns to the seat, the slider block is inside the spout. In a specific embodiment, the adjusting bolt penetrates through the opening of the clamping seat and is fixed through a nut. In a specific implementation manner, the root isolating device comprises a flowerpot base, an exchange hole, a clamping groove, a coarse filterin