572 results about "Root growth" patented technology

The invention relates to the technical field of greenhouse environment control, in particular to a greenhouse environment control method and system. The method comprises the following steps: obtaining data of a crop cultivation stage and data of a soil monitoring sensor to obtain soil state monitoring filling data; then, identifying the abnormal fluctuation state of the soil acidity and alkalinity, and estimating the root growth inhibition degree according to the state to obtain root growth inhibition gradient data; secondly, predicting the soil looseness requirement according to the root inhibition data, and adjusting the soil acidity and alkalinity to realize balance adaptation; and then, based on the soil state data, carrying out adaptive control training, constructing a soil environment regulation and control model, and sending the soil environment regulation and control model to a cloud platform to execute greenhouse environment control. According to the invention, the greenhouse environment control technology is optimized, so that the greenhouse environment control technology is more perfect.

The indoor ornamental sympodial bamboo root control directional cultivation device comprises a fixing cylinder with an opening in the upper end, a plurality of ventilation grooves are inwards formed in the upper end and the lower end of the outer wall of the fixing cylinder, a partition plate is arranged at the position, close to the bottom, of the inner wall of the fixing cylinder, and the lower end of the partition plate and the bottom of the fixing cylinder are matched to form a water storage cavity; a plurality of through holes are inwards formed in the edge of the upper end of the outer wall of the partition plate, a planting barrel is detachably connected to the position, above the partition plate, in the fixed barrel, a limiting ring is arranged at the upper end of the outer wall of the planting barrel, a plurality of air holes distributed in an array mode are inwards formed in the outer wall of the planting barrel, and a plurality of limiting blocks are arranged at the upper end of the inner wall of the fixed barrel. A plurality of absorbent cotton ropes extending out of the upper end of the outer wall of the water storage cavity and extending into the planting cylinder are arranged at the bottom of the inner wall of the water storage cavity. According to the device, the root nesting condition can be avoided when indoor sympodial bamboos are cultivated, operation is easy, and directional growth of root systems can be controlled without frequent manual watering during cultivation.

A plant holder for holding an amount of rooting (growing) media in which plant roots develop that electrically isolates the plant roots from an electric field used to deliver water and plant nutrients to that rooting media via a high-voltage, low-current electrospray system. A conductive material disposed proximate the rooting media receives electrically charged droplets including water or nutrients and passes the water or nutrients to the rooting media while directing the electrical charge to ground.

The invention provides a nutrient slow-release synergistic seedling transplanting disc and application thereof. The nutrient slow-release synergistic seedling transplanting disc is composed of a disc body and a seedling cup, the disc body is composed of two layers of materials including PBAT and PLA, the seedling cup is composed of three layers of materials, the inner layer is made of the PBAT material, the middle layer is a strip-shaped fertilizer belt made of macroelements, organic fertilizer, bacterial fertilizer and microelements, and the outer layer is made of the PLA material. The nutrient slow-release synergistic seedling transplanting disc integrates seedling raising and fertilization and can be used for seedling transplanting of grafted seed melons, seedling cups are directly transplanted into soil during transplanting, seedlings and the disc do not need to be manually separated, the seedling transplanting disc does not need to be recycled and transported after transplanting, the seedling cups in the soil isolate damage of salt, alkali and diseases and insect pests to seedling roots, and the seedling transplanting disc is convenient to use. Meanwhile, nutrient substances are slowly released, nutrients needed by melon seedlings are accurately met, the problem that an original seedling raising plate pollutes the environment is solved, and the problems that roots are damaged during transplanting, fertilization is balanced, the growth environment of the roots is poor and germs are harmed are solved.

The invention discloses a Chinese chestnut composite phosphate-solubilizing bacterial agent and application thereof, and belongs to the technical field of microorganisms. The invention provides a compound phosphate-solubilizing bacterial agent. The compound phosphate-solubilizing bacterial agent is prepared from phosphate-solubilizing bacteria GXLK-W6 and phosphate-solubilizing fungi GXLK-WZ1-1. The phosphorus-solubilizing bacteria GXLK-WZ1-1 are classified and named as Aspergillus niger, the preservation number of the bacteria is CGMCC (China General Microbiological Culture Collection Center) No.41390, the phosphorus-solubilizing bacteria GXLK-W6 are classified as Burkholderia pyrrolothrix, and the preservation number of the bacteria is CGMCC No.31124. The phosphorus-solubilizing bacteria GXLK-WZ1-1, the phosphorus-solubilizing bacteria GXLK-WZ1-1, the phosphorus-solubilizing bacteria GXLK-WZ1-1, the phosphorus-solubilizing bacteria GXLK-WZ1-1 and the phosphorus-solubilizing bacteria GXLK-WZ1-1 and The strains are independently separated from rhizosphere soil of Chinese chestnuts and are screened. And calcium phytate is added into the microbial inoculum to serve as a slow-release phosphorus source. The compound phosphate-solubilizing bacterial agent improves the growth amplification of Chinese chestnut seedlings, promotes the growth of root systems, and promotes the phosphorus absorption of plants. The compound phosphate-solubilizing bacterial agent can improve the dissolution efficiency of inorganic phosphorus in soil and increase the content of soluble available phosphorus, and plays an important role in improving the fertility of the soil.

The invention provides a fertilizer synergist for reducing nutrient loss and inhibiting nitrification and application of the fertilizer synergist. The fertilizer synergist is prepared from the following components in percentage by mass: 95 to 98 percent of carboxyl cross-linked modified montmorillonite, 0.05 to 0.1 percent of mannan oligosaccharide, 0.1 to 0.5 percent of mannan, 1 to 3 percent of polyaspartate and 0.5 to 2 percent of a nitrification inhibiting aid. According to the fertilizer synergist capable of reducing nutrient loss and inhibiting nitrification and the application of the fertilizer synergist, the fertilizer synergist serves as a plant nutrient loss control synergist and a nitrification inhibitor and can activate a crop stress resistance signal source, promote and induce synthesis of endogenous auxin in plants, root and growth, activate phosphorus and dissolve potassium, reduce nitrogen loss and improve the yield of the plants. The fertilizer utilization rate is improved.

The invention relates to the technical field of vegetation root system nondestructive testing, in particular to a multispectral vegetation root system identification system and method based on a differentiable physical engine, and the system comprises a multispectral LiDAR module which is used for transmitting near-infrared laser and short-wave infrared laser, scanning a target area, obtaining dual-wavelength reflectivity data, and determining the vegetation root system according to the dual-wavelength reflectivity data; generating a reflectivity ratio matrix by adopting a reflectivity ratio classification model; the differentiable physical engine is used for quantizing the dynamic relationship between the vegetation root growth rate and the soil resistance by adopting a coupling model according to the reflectivity ratio matrix, generating a physical model and updating the physical model at a preset time interval; and the data processing and three-dimensional modeling module is used for generating a three-dimensional root system model and a health assessment result according to the reflectivity ratio matrix and the physical model, and outputting the three-dimensional root system model and the health assessment result. According to the scheme, soil penetration and root system and foreign matter distinguishing can be carried out, the vegetation native environment is not damaged, dynamic monitoring analysis is carried out, and the accuracy of recognition analysis is improved.

The invention provides a degradable sodded strip for ecological restoration and a preparation method thereof, and belongs to the technical field of sodded strips, the degradable sodded strip comprises an upper-layer fiber web, a middle-layer seed and nutrient layer and a lower-layer grid which are sequentially laminated and compounded from top to bottom; the upper-layer fiber web is made of a hydrophilic degradable material and is used for absorbing moisture and preserving soil moisture; the middle seed and nutrient layer comprises plant seeds and a nutrient controlled release unit; the lower-layer grid is a three-dimensional grid which is made of a degradable high polymer material, has a three-dimensional communicated micropore structure and is used for mechanically guiding root growth; the nutrient controlled release unit is a microcapsule which takes a fertilizer as a core material and takes an environment response type polymer as a wall material, and the microcapsule is anchored in the fiber interweaving nodes of the lower layer grid through a cross-linking agent. According to the invention, environmental response type precise controlled release of plant rhizosphere nutrients and three-dimensional mechanical guidance of a root system growth path can be realized, and the utilization rate of the fertilizer and the survival rate and long-term stability of vegetation recovery under poor site conditions such as side slopes, river banks and mines are effectively improved.

The invention discloses a soybean phospholipid disease-preventing and root-promoting microbial agent as well as a preparation method and application thereof, and belongs to the technical field of microorganisms. The microbial agent comprises a microbial composition, modified enzymolysis soybean phospholipid, a carrier and auxiliary components. According to the invention, the modified enzymolysis soybean phospholipid and microorganisms are combined to achieve a synergistic effect. According to the method, soybean phospholipid is modified and subjected to enzymolysis, and the steps of pretreatment, stepped low-temperature treatment, enzymolysis treatment, enzyme inactivation and purification and the like are carried out, so that the quality and performance of the soybean phospholipid are improved, the rhizosphere colonization rate of strains can be increased, the disease prevention and root promotion effects can be improved, the soil micro-ecological environment can be improved, and good growth conditions are created for plant root systems; and the disease-preventing and root-promoting effects of the microbial agent are further enhanced. The microbial agent disclosed by the invention can be used for remarkably reducing the morbidity of wheat sharp eyespot and reducing the use amount of chemical pesticides, can also be applied to planting of other crops, and can play a role in preventing and controlling various plant diseases and promoting root growth.

The invention relates to a composite microbial agent suitable for saline-alkali soil remediation of sorghum production in northeast alpine regions, and a preparation method and application thereof. The composite microbial agent comprises bacillus subtilis, bacillus mucilaginosus and pseudomonas fluorescens. Bacillus mucilaginosus capable of efficiently producing polyglutamic acid and potassium and pseudomonas fluorescens capable of secreting chitinase are separated and screened from obstacle soil in northeast alpine regions, and field trials are carried out in the obstacle soil (coastal saline-alkali soil) in the northeast alpine regions. The low-temperature slow-release fertilizer has the unique characteristics of secreting polyglutamic acid, potassium and chitinase under the low-temperature condition, is low in cost, and can effectively improve the physical and chemical properties of soil, increase the seed emergence rate, stimulate the root growth and enhance the salt resistance and alkali resistance of seedlings after being applied.

The invention belongs to the technical field of plant genetic engineering, and particularly relates to application of a soybean low-phosphorus-tolerant gene GmVQ32 in improving low-phosphorus stress tolerance of plants. The soybean low-phosphorus-tolerant gene GmVQ32 disclosed by the invention can be used for enhancing the root growth and phosphorus absorption efficiency of plants by positively regulating the response of plant root systems to low-phosphorus stress, so that the adaptability of the plants to a low-phosphorus environment is improved.

The invention discloses a polypeptide and application thereof in regulation and control of plant development, and relates to the technical field of biology. The invention specifically discloses any polypeptide from A1) to A3) as shown in the following: A1) a polypeptide with an amino acid sequence as shown in SEQ ID NO: 1; a2) a polypeptide which is obtained by substitution and / or deletion and / or addition of more than one amino acid residue on the amino acid sequence as shown in SEQ ID NO: 1 and has the function of regulating plant growth and development; and A3) a fused polypeptide obtained by connecting a tag to the N end and / or C end of A1) or A2). The polypeptide can effectively regulate and control root system growth and root regeneration of plants, can be well applied to improvement of plant varieties, and has important practical value for plant breeding work.

The invention relates to the technical field of saline-alkali soil improvement, in particular to a compound conditioner for treating sulfate type saline-alkali soil and application of the compound conditioner. The compound conditioner is formed by compounding hydrotalcite, acidic zeolite and humic acid; wherein the hydrotalcite is nitrate intercalated MgAl-LDH or MgFe-LDH, and the molar ratio of divalent metal ions to trivalent metal ions of the hydrotalcite is (2: 1)-(4: 1); the acidic zeolite is clinoptilolite treated by a nitric acid solution; the humic acid is mineral source humic acid, and the purity of the humic acid is greater than 80%. The compound conditioner disclosed by the invention can mineralize Na < + > and SO4 < 2-> which are too high in content in saline-alkali soil, reduce the salt content and pH and prevent plants from osmotic stress and alkaline toxicity; the content of nitrate nitrogen and organic matters in soil is increased, and nutrient substances are provided for plants; the soil structure is improved, the water-retaining property and the air permeability are enhanced, the soil bulk density is reduced, and plant germination and root growth are facilitated.

A novel hollow tine aerator has been developed that features a bevel tip and bevel ejection system for enhanced soil penetration and seamless soil core removal. This innovative design addresses the limitations of conventional aerators, enabling efficient soil aeration and improved turfgrass health. The bevel tip design, with its inclined cutting edge, minimizes resistance and facilitates smoother penetration of hard or compacted soil. The bevel ejection system, comprising an angled base on top of the tine, guides the soil core upwards and exits through the open groove, eliminating the need for manual intervention. The integration of the bevel tip and bevel ejection system offers several benefits over conventional aerator designs. Enhanced soil penetration enables deeper aeration, promoting root growth and nutrient uptake. Seamless soil core removal eliminates the need for manual dislodgement, saving time and labor. Reduced operator fatigue enhances comfort and efficiency during aeration tasks.

The present disclosure relates to engineered RNA m6A demethylases with disrupted low complexity regions (LCRs) for expression in plants, as well as recombinant DNA encoding the engineered RNA m6A demethylases, vectors encoding the recombinant DNA, plants including the engineered RNA m6A demethylases, and method of improving the growth of plants using the engineered RNA m6A demethylases, including increased root growth and elevated photosynthesis. The present disclosure further relates to methods of improving growth of a plant, including increased root growth and elevated photosynthesis, by modifying endogenous ALKBH5 homolog genes to include disrupted LCRs, and plants produced by those methods.

The invention discloses a crop planting substrate for promoting rhizome system development and a preparation method thereof. The substrate comprises the following components by volume ratio: 10-20% of straw biogas residue; 50-60% of peat; 15 to 25% of vermiculite; 15 to 25% of perlite; wherein the substrate further comprises a functional additive, and the functional additive is selected from one or more of potassium fulvate, chitosan or plant growth promoting flora. The crop planting substrate provided by the invention significantly promotes the development of rhizome systems through the synergistic effect of the organic-inorganic composite system and the functional additive. The layered structure design optimizes the slow-release effect of water and fertilizer, the water-absorbent resin enhances the water-retaining property, the slow-release fertilizer particles provide continuous nutrients, and the pH regulator maintains a suitable acid-base environment. Compared with a traditional substrate, the volume weight, the total porosity and the gas-water ratio of the substrate are more suitable for root growth, and the substrate is especially suitable for seedling raising of crops such as rice and traditional Chinese medicinal materials.

The invention belongs to the technical field of crop seedling raising methods, and particularly discloses a root growth promoting agent suitable for rooting of sliced ginger, a ginger slicing seedling raising method and application. According to the method disclosed by the invention, before ginger planting, a root growth promoting agent is used, the root growth promoting agent comprises a 200-fold diluted solution of naphthalene B sodium nitrate, a 500-fold diluted solution of a microbial agent polyglutamic acid, a 500-fold diluted solution of plant rooting powder and a 10000-fold diluted solution of mepiquat chloride, and the four components realize synergistic interaction, so that the comprehensive indexes of the aboveground part of the ginger cut-block seedling, the plant growth amount and the seedling root system are optimal. According to the method, intensive early seedling raising is achieved through dicing, the ginger field planting time is shortened by more than 50 days, and crop rotation is facilitated; seedlings are neat and consistent, the root activity is high, the field survival rate and mechanical operation of the seedlings are improved, and the labor efficiency is improved. The technical method is simple, the production cost is low, the seedling rate is high, and direct economic benefits are embodied in production.

The invention relates to the field of agricultural planting, in particular to an inflatable water-injection air column type mist cultivation planting groove which comprises a planting groove body and X frames, a groove cover is installed on the upper end face of the planting groove body, groove holes are symmetrically formed in the upper end face of the groove cover in a front-back mode, a plurality of X frames are installed above the groove holes from left to right, and the X frames are connected through transverse rods. A vine climbing net is arranged at the inner side end of the X frame, a laser perforated water hose is arranged at the bottom in the planting groove body, and a liquid supply pipe is installed on the right side end face of the laser perforated water hose. And the phenomena that the black material absorbs heat in the sun, air pressure in the air column rises and explodes, and crop root growth is affected by too high temperature are avoided.

The invention discloses a monitoring and analyzing system for root systems of plant slope protection in a mining area. According to the method, morphological enhancement and deep learning technologies are creatively fused through the root system image recognition unit, and the problem that the root system microstructure is difficult to capture in a complex soil background in a traditional method is effectively solved. The unit is based on a multi-scale feature fusion algorithm, can automatically extract key morphological parameters such as root system topology fractal dimensions and the like, remarkably improves the fine root recognition rate, and enables slope protection plant type selection and layout to better fit actual geological conditions. The root growth prediction unit integrates an environmental constraint model and biological rhythm characteristics, realizes accurate prediction of a root extension trend by dynamically coupling parameters such as soil water potential and nutrient concentration, helps managers to plan a reseeding scheme in advance, and avoids the risk of slope instability caused by lagging of root development.

The invention discloses a method and a system for analyzing a root system growth state image after seedling transplantation, and particularly relates to the technical field of root system growth state image analysis. Based on an identifier between a single seedling and an image acquisition device, a root zone image time sequence acquisition and numbering system is constructed, and a shallow buried near-infrared imaging device is adopted to obtain a multi-frame image sequence; and through image rasterization, alignment resampling and structure enhancement processing, a root system atlas with space consistency and boundary separability is formed. Further extracting an edge migration vector field and a root tip active region, calculating a root tip active change rate and a root system increment density gradient, fusing to generate a recovery trend index, and combining a trend label and a structural feature vector to construct an activity grade judgment and response suggestion map, so as to realize intelligent analysis and management decision of a root system recovery state. The problems that root system state recognition lags behind, judgment subjectivity is high, and dynamic quantitative support is lacked are effectively solved.

The invention relates to the technical field of garden seedling culture, in particular to a seedling culture device for forest and grass resource protection, which comprises a base, lifters are mounted on the front side and the rear side of the upper surface of the base, a driving mechanism is mounted on the upper surface of the base, the lifters are pushed by the driving mechanism to realize lifting, and moving mechanisms are mounted at the tops of the lifters. A soil loosening mechanism is mounted at the top of the moving mechanism. Fertilization is triggered through pressure, it is ensured that nutrients accurately act on a root system area, waste and loss of traditional broadcast fertilization are reduced, the fertilizer utilization efficiency is improved, and the depth of a vibrating bar penetrating into the soil dynamically becomes small along with growth of the root system; shallow soil is guaranteed to be continuously loose to adapt to growth of new roots, deep root systems are prevented from being directly touched and damaged by the vibrating rod, rhizosphere soil and beneficial microorganisms are reserved to the maximum extent, and the survival rate of transplanted trees is remarkably increased.

The utility model relates to the technical field of submerged plant planting, in particular to a submerged plant rapid recovery device for a lake storm erosion area, which comprises a multi-hole platform-shaped body, medicament holes and planting holes are arranged in the body, medicament cabins for accommodating more than or equal to two medicaments and separating pieces for different medicaments are arranged in the medicament holes, and the planting holes are communicated with the medicament cabins. The medicament bin is communicated with the outside of the body, and the planting holes vertically penetrate through the top surface and the bottom surface of the body; the body is connected with a floating object through a rope, and a downward protruding part is arranged on the bottom face of the body. The gravity center of the body is located at the lower half part; the body can be released through the unmanned aerial vehicle, so that the planting efficiency is effectively improved; the body is fixed in position after sinking to the bottom and cannot be washed away by water flow, and submerged plant planting groups cannot be scattered by the water flow; the body can be found according to the floating objects, and recycling of the body is achieved; the submerged plants can rapidly take roots and grow in a eutrophicated water body with relatively high algae density after being put into the water body.

The invention discloses a sugarcane ScPP2C49 gene and application thereof, and relates to the technical field of plant biology, the nucleotide sequence of the ScPP2C49 gene is as shown in SEQ ID No.1, and the amino acid sequence of protein coded by the ScPP2C49 gene is as shown in SEQ ID No.2. The gene is induced to express by drought and abscisic acid, and the encoded protein of the gene is positioned in a cell nucleus. Functional studies show that after overexpression of the ScPP2C49 gene in the plant, the drought resistance of the plant is negatively regulated through various mechanisms of inhibiting an abscisic acid signal channel, hindering stomatal closure under drought stress, weakening active oxygen scavenging ability, reducing photosynthetic efficiency, inhibiting root growth and the like. The invention also provides a recombinant overexpression vector containing the gene and a method for obtaining a transgenic plant with reduced drought resistance by using the vector through an agrobacterium-mediated method. According to the invention, a new gene resource is provided for deep analysis of a plant drought-resistant molecular mechanism, and an important target gene is provided for cultivation of high-stress-resistance crop varieties through a reverse genetics means (such as gene knockout).

The agricultural seedling cultivation device comprises a cultivation box, the interior of the cultivation box is divided into a planting layer through a partition plate, the planting layer comprises a cultivation box and a hilling box, the hilling box is of a split type design and comprises an upper box body and a lower box body which are slidably connected, the upper box body is provided with a pot frame used for containing a cultivation pot, and through holes are formed in the cultivation pot and the pot frame; the through holes are controlled to be communicated or closed through movement of the lower box body, a controllable water supplementing channel is formed, the culture box is provided with a first water mist system used for supplementing water to branches and leaves, the hilling box is provided with a second water mist system used for supplementing water to roots, the lower box body is further provided with a mist flow assembly, and water mist is conveyed upwards to a planting layer through airflow. Three core water replenishing modes can be flexibly switched, a user can accurately carry out independent and accurate water management according to the requirements of different growth stages (such as key root protection in the seedling stage and foliage water replenishing in the growth stage) of seedlings, the optimal mode is flexibly selected, and high intelligence and on-demand water supply are achieved.

The invention discloses an Elodea nuttallii transplanting and maintaining method for breeding procambarus clarkia in a rice field in the technical field of aquaculture, and relates to six links of rice field transformation and treatment, shallow trench digging and base fertilizer application, Elodea nuttallii transplanting, Elodea nuttallii topdressing, Elodea nuttallii maintaining and water quality regulation and control. The method comprises the following steps: applying a fertilizer A according to the amount of 5-10 kg / mu for topdressing, applying a fertilizer B according to the amount of 4-8 kg / mu in March-April, putting duckweed on the water surface in a high-temperature season in May and in a rooting stage and a flowering stage of elodea nuttallii, controlling the putting area of the duckweed to be 50 + / -5% of the area of a culture water body, and applying a fertilizer C according to the amount of 4-8 kg / mu. The root growth and development of the elodea nuttallii are promoted. By means of the waterweed transplanting and maintaining method for breeding the procambarus clarkii in the rice field, the waterweed can still keep vigorous vitality in the middle ten days of July, and the requirement for the breeding environment of the procambarus clarkii in the high-temperature summer season is met.

The invention relates to the technical field of agricultural irrigation, in particular to a water-saving irrigation device capable of supplying water to a root system directionally, which realizes directional water supply to the root system according to the growth rule of crops and the change of the depth reached by irrigation water in different periods along with the growth of the root system by arranging a unit growing along with the root. Compared with drip irrigation of only earth surface irrigation in the prior art, the water obtaining efficiency of the root system is remarkably improved, stable growth of crops is further guaranteed, meanwhile, loosening or part aging monitoring can be conducted on the irrigation vertical pipes buried underground in cooperation with the arrangement of the sensing strips, and after loosening or part aging occurs at the connecting joint of the two irrigation vertical pipes, the irrigation vertical pipes can be prevented from being damaged. When the device is loosened, the protection effect of the sensing strip on the inner side of the corresponding position becomes poor under the pressing effect of external soil, at the moment, certain bending occurs, the laser path of the laser device is shielded, then the loosening condition is found in time, and workers can conveniently conduct maintenance in time and maintain normal irrigation on crops.

The invention discloses a plant cultivation system and method based on liquid-gas-solid three-state cooperative regulation, the plant cultivation system based on liquid-gas-solid three-state cooperative regulation comprises a cultivation container, a field planting skeleton, a degradation film and a regulation area; the planting framework is arranged in the cultivation container and divides the interior of the cultivation container into a liquid area, an air area and a substrate area, the degradation film covers the space between the air area and the substrate area, and a plant root system can pierce the degradation film from the substrate area through growth and extends to the air area and the liquid area. The capillary action of nutrient and temperature and humidity adjustment, water evaporation or liquid and substrate coupling can be obtained, the substrate can keep moist for a long time, plants are induced to form water roots and expand root growth space, fertilizer water can be circularly supplied through bottom liquid, the fertilizer water can be easily adapted to and controlled by plant growth requirements, and concentrated regulation and unified supply of the fertilizer water can be realized; labor is saved; and time efficiency is improved.

The invention provides an ecological slope protection structure combined with microorganism mineralization and vegetation reinforcement and a construction method of the ecological slope protection structure. The construction method comprises the steps that the critical stability of a side slope is maintained through a dry rubble retaining wall, microorganism slurry is injected into a pre-buried grouting floral tube, after microorganism mineralization, rubbles are cemented to form a microorganism slurry rubble retaining wall, and the initial stability is improved. The degradable U-shaped groove is formed in the outer side of the retaining wall, and a guide layer containing fibrilia, coco coir fiber and plant growth hormone is laid at the bottom of the degradable U-shaped groove to guide slope top and riding track plant root systems to directionally grow along the surface of the retaining wall. The monitoring system monitors root growth and environmental parameters in real time and is linked with the automatic irrigation device to achieve precise irrigation. And finally, microorganism slurry is sprayed on the surface of the retaining wall to form a calcium carbonate hard shell layer, rainwater infiltration is further inhibited, and rainfall erosion of the slope is prevented. Through the synergistic effect of microbial grouting and vegetation root systems, the method has the effects of rapid reinforcement, long-term stability and ecological restoration, and is suitable for slope supporting engineering in southeast hot and humid areas.

The invention relates to the technical field of tobacco seedling raising, and discloses a dry-wet alternation tobacco seedling raising method, which comprises the following steps: performing water control management on a seedling raising pond for culturing tobacco seedlings in a periodic circulation mode, performing dry-wet alternation in each period, and realizing dry-wet alternation by sequentially performing a water inlet stage, a water leakage stage and a drought stage in each period. The tobacco seedling root toughness, stress resistance and adaptive capacity can be improved, and the tobacco seedling returning speed and the early-growing and quick-sprouting progress are accelerated. According to the actual water requirement rule of tobacco seedling root growth, the drought alternating seedling raising water control method is provided by combining the characteristics of tobacco seedlings, and the seedling raising quality is greatly improved. Moreover, according to the method, the temperature and humidity changes of the seedling raising substrate are monitored in real time, so that effective control over crop growth is achieved. Water control is implemented by using water leakage and natural permeation theories, so that the use and energy consumption of natural resources are reduced, the aim of simply and conveniently implementing healthy seedling culture is fulfilled, and the cost is reduced.

The invention discloses a special controlled-release nitrogen fertilizer containing flavonoid nutrient signal substances for corn. Comprising 1000 parts of a nitrogen fertilizer, 5-10 parts of flavonoid nutrient signal substance microcapsules and 50-100 parts of a coating material. A flavonoid nutrient signal substance and benzoic acid are dissolved in deionized water, the pH is adjusted to be alkaline, a signal substance solution is obtained, a PLGA solution is slowly poured into the signal substance solution, and a water / oil type emulsion is obtained through homogenization and emulsification; adding a polyvinyl alcohol solution into the water / oil type emulsion in a constant-temperature water bath, homogenizing and emulsifying to obtain a water / oil / water type emulsion; and freezing, centrifuging, washing and freeze-drying the water / oil / water type emulsion to obtain the flavonoid nutrient signal substance microcapsule. Compared with the traditional controlled-release fertilizer, the controlled-release nitrogen fertilizer disclosed by the invention can continuously release signal substances into soil during the growth period of corn, stimulate the growth and metabolism of root systems, promote the colonization of nitrogen-fixing microorganisms and improve the nitrogen fertilizer utilization rate of the corn.