43 results about "Fraxinus mandschurica" patented technology

The invention discloses a biomass forming fuel. The biomass forming fuel is prepared from the following components in parts by weight: 3.1 parts of walnut shell, 1.2 parts of robinia pseudoacacia saw dust, 1.8 parts of pine tree saw dust, 2.8 parts of fraxinus mandshurica saw dust, 0.4 part of ammonium dihydrogen phosphate, 1.6 parts of corncob, and 2.2 parts of flax straw powder. The biomass forming fuel has the advantages of being long in combustion time, and obviously high in combustion heat value, combustion rate and heat efficiency.

The invention discloses a wood sawing device for forestry. The device structurally comprises a wood sawing table, a placing frame, a window, a saw blade and a propelling mechanism, wherein the placingframe is fixedly installed on the right side of the front end of the wood sawing table, the placing frame is positioned at the front end of the window, the window is embedded on the right side of thefront end of the wood sawing table, and the saw blade is installed inside the wood sawing table. A plate body buckles semi-cylindrical fraxinus mandshurica, an air bag is pneumatically transmitted through an external air cylinder, four push rods push four pressing plates, the pressing plates are adjusted through a hinge shaft, the edge of the sawn face of the cylindrical fraxinus mandshurica is better cooled and pressed through the aluminum material of the pressing plates, the edge of the sawn face of the cylindrical fraxinus mandshurica is reduced from warping and cracking, the blade is ejected through a return spring, an electromagnetic block is powered by an external power supply, the electromagnetic block and a sliding shaft are magnetically adsorbed, at the moment, the sliding shaftslides in an arc track inside a sliding rail, the blade is driven to move in an arc shape, and fine burrs generated at the edge of the sawn surface of the semi-cylindrical fraxinus mandshurica are effectively removed.

The invention discloses a fraxinus mandshurica water retention and afforestation method, and belongs to the technical field of water retention and afforestation. The method comprises the following steps of selection of an afforestation land, preparation of a water-retaining agent, soil preparation, seedling selection and transportation, application of the water-retaining agent, afforestation and young forest tending management, wherein the water-retaining agent comprises coconut soil, aloe gel, plant starch, potassium alkyl sulfate and gelatin. Based on the principle of matching site with trees, by applying the water-retaining agent, the method has the beneficial effects that (1) multiple water retention means are used for comprehensive treatment, so that the water retention efficiency andthe afforestation survival rate are improved; (2) the operation is simple and convenient and the popularization is easy; and (3) the method is environment-friendly and does not pollute the soil.

The invention relates to the technical filed of grafting and provides a method for grafting fraxinus mandshurica on fraxinus chinensis. The method is implemented according to the following steps: step 1, cultivation of fraxinus chinensis rootstock seedlings: one-year-old fraxinus chinensis rootstock seedlings are planted in a field in spring, and 2,800-2,850 seedlings are planted per mu; step 2, grafting of the fraxinus mandshurica on the fraxinus chinensis: the fraxinus mandshurica is grafted on the fraxinus chinensis with a bud grafting method, on April 15 or 20 in the spring of next year, buds of fraxinus mandshurica scions of one-year-old branches with xylem and full bud eyes are cut and grafted on the positions, 5-8 cm away from the ground, of the fraxinus chinensis rootstock seedlings, a bandage is used for binding during grafting, buds of the fraxinus mandshurica scions are exposed, main stems above ports of the fraxinus mandshurica scions are cut off after grafting, and cut edges are sealed with wax; step 3, management after grafting: normal management is performed after grafting. Compared with the conventional grafting technology, the method for grafting the fraxinus mandshurica on the fraxinus chinensis is high in survival rate, economical and practical and can meet afforestation demands.

The invention discloses a method for rapid propagation of embryogenic cells of fraxinus mandshurica. The method comprises the following steps of selecting calluses of fraxinus mandshurica, wherein thecalluses can be originated from various explants such as roots, stems, leaves, seeds and embryos, and inoculating the calluses to an F4 solid medium to cultivate 1-2 subcultures so as to obtain embryogenic calluses of fraxinus mandshurica; and inoculating friable embryogenic calluses to an F4 liquid medium to cultivate 2-3 subcultures so as to obtain single cells and small cell groups of fraxinusmandshurica. The method has the advantages that the F4 media are selected; besides conventional WPM basic media, 30g / L saccharose is selected to be combined with four hormones: BA, NAA, IBA and TDZ;cells on the media grow vigorously, and no death is caused by browning as long as the subculturing takes place in the growth cycle. The method is established to lay a foundation for scaled productionof cells of fraxinus mandshurica and researches on secondary metabolites.

The invention provides a one-step method rooting and transplanting technology for tissue culture seedlings of Fraxinus mandshurica. Semi-lignified adventitious individual plants obtained by tissue culture are cultured for 30 d in a strong seedling medium (WPM + 2.0 mg / L 6-BA + 20 g / L sucrose + 7 g / L agar), and then directly planted in a seedling culture bag containing a rooting medium (WPM + 1.4 mg / L IBA+0.7 mg / L NAA, without sucrose and agar) matrix (the ratio of turfy soil to vermiculite is 3:1), then the seedling culture bag is closed with a plastic pull bag, the plastic pull bag is opened7 d after culture under specific light, temperature and humidity conditions, the plastic pull bag is removed after 14 d, after 30 days of constant-temperature and constant-humidity culture, adventitious branches take root and grow out new leaves, and the survival rate is 63.33%. The technology simplifies rooting and transplanting into one step, is one of key technologies for rapid propagation of tissue culture seedlings of the Fraxinus mandshurica, saves the time and cost, and lays a solid foundation for the large-scale production of rapid propagation of the Fraxinus mandshurica.

The invention discloses a method for reinforcing a woody composite honeycomb panel by glass fiber cloth and relates to the method for enhancing mechanical properties of the woody composite honeycomb panel through adding the glass fiber cloth between a veneering layer of a woody veneer and a substrate layer of a honeycomb panel. The method is used for overcoming the disadvantages such as coarse and loose structure and low strength of the current honeycomb panels and relieving the present situation that the wood supply is tense. The glass fiber cloth reinforced woody honeycomb panel consists of a Fraxinus mandshurica veneer 1, white glue, of which the use level is 170g / m<2> to 200g / m<2> 2, the glass fiber cloth 3, epoxy resin 4, a honeycomb panel substrate 5, white glue, of which the use level is 200g / m<2> to 240g / m<2> 6 and a poplar veneer 7. The method is characterized by comprising the following steps: (1) reinforcing the honeycomb panel by adopting the glass fiber cloth; (2) carrying out first-time cold pressing; (3) sticking the woody veneer onto the glass fiber cloth; and (4) carrying out second-time cold pressing. According to the method, the flexural strength of the glass fiber cloth reinforced woody honeycomb panel is improved by 5.5 to 6.5 times, and the flexural elastic modulus is increased by 0.5 to 1.5 times. The method has the advantages that the strength of the honeycomb panel is improved, the range of use of the honeycomb panel is enlarged, and the situation that wood resources are lack and are increasingly outstanding in supply and demand contradiction is relieved.

The invention discloses a high-viscosity high-temperature-resistant steel bar embedding adhesive, and belongs to the technical field of chemical raw material preparation. The adhesive is formed by soaking refined fraxinus mandshurica in a zinc chloride solution and stirring, and carrying out sulfhydrylation modification; the hydrogen-bond interaction in the components of the modified wood pulp isconveniently improved; the bonding area between the fibers and between the fibers and the organic resin is increased, thus increasing density, and improving the bonding effect stably; glycerol ester substances are used for toughening and modifying phenolic epoxy acrylate resin components, thus improving flexibility of resin components, reducing the viscosity to a certain extent, and improving thestability of the prepared steel bar embedding adhesive; the confusion degree of a cured product is enhanced by modifying resin components, the thermodynamic entropy of the cured product is increased,the crystallinity of the cured product is reduced, and the application effect of the steel bar embedding adhesive is improved on the basis that the cured product meets the mechanical property of the steel bar embedding adhesive. The invention solves the problems of poor high-temperature resistance and low bonding strength of the current common steel bar embedding adhesive.

The invention relates to a fraxinus mandshurica U6 gene promoter proFmU6.7 as well as cloning and application thereof. According to the invention, the fraxinus mandshurica RNA polymerase III type promoter, namely the fraxinus mandshurica endogenous U6 gene promoter proFmU6.7, is successfully cloned for the first time, an activity detection carrier of the fraxinus mandshurica U6 gene promoter is successfully constructed, and through instantaneous transformation of fraxinus mandshurica seedlings and GUS dyeing verification, the promoter is proved to have efficient transcriptional activity. Experiments prove that the fraxinus mandshurica U6 gene truncated promoter proFmU6.7.4 has starting activity and is successfully applied to a CRISPR / Cas9 (clustered regularly interspaced short palindromic repeats / CRISPR associated protein 9) system. According to cloning of the fraxinus mandshurica U6 gene promoter proFmU6.7 and expression analysis of promoter activity, an efficient promoter sequence is provided for research on transformation of fraxinus mandshurica and related plants, and efficient and accurate germplasm innovation and variety genetic improvement of fraxinus mandshurica can be achieved.

The invention relates to a method for construction of a water-saving biological protection system on the periphery of an oasis under flood irrigation condition. According to the method, tamarix chinensis, alhagi sparsifolia, karelinia caspia and certain ephemeral plants such as halogeton or salsola collina which are originally distributed irregularly are restored and repaired to form a first protection zone; populus bolleana of tree category and big-leaf clover of forage category are planted in a cell block mode to form a second protection zone; an artificial biological isolation zone is set with fraxinus mandshurica planted in trenches and subject to furrow irrigation to form a third protection zone; and forests of black walnuts of tree category and medical herbs are planted with combination of trench planting and block planting to form a fourth protection zone. By adopting the method, the allocation of deep-rooted plants and shallow-rooted plants, the allocation of trees, shrubs and herbaceous plants, the allocation of sun plants and shade-tolerant plants and the allocation of protective plants and economic plants are demonstrated in a centralized way in the biological protection system, effective utilization of water by plants can be realized, and normal rapid growth of plants can be ensured.

The present invention provides a kind of technique of the integration of rooting and transplanting of Mandshurica mandshurica tissue culture seedlings. First, the semi-lignified adventitious shoots obtained by tissue culture are placed in strong seedling medium (WPM+2.0mg / L 6-BA+ 20g / L sucrose+7g / L agar) after culturing for 30d, directly planted into the matrix (peat soil: vermiculite) containing rooting medium (WPM+1.4mg / L IBA+0.7mg / L NAA, without sucrose and agar) =3:1) in a seedling-growing bag, then sealed with a plastic pull bag, cultivated under specific light, temperature and humidity conditions, opened the bag mouth after 7 days, removed the bag after 14 days, and after 30 days of constant temperature and humidity cultivation, adventitious branches took root and grew out. The survival rate of new leaves is 63.33%. The invention simplifies rooting and transplanting into one step, which is one of the key technologies for rapid propagation of Mandshurica mandshurica seedlings, saves time and cost, and provides a large-scale method for the rapid propagation of Mandshurica mandshurica. Production has laid a solid foundation.

The invention relates to a fraxinus mandshurica stumping strong seedling cultivation method. The fraxinus mandshurica stumping strong seedling cultivation method comprises the steps that nursery stocks planted for two years or ridge cultured for 1-2 years in a fraxinus mandshurica seeding bed in a nursery garden are selected, after winter snow is thoroughly melted in spring, trunks of the fraxinus mandshurica nursery stocks are sheared off at the parts 4-5 cm away from the ground, hand shears good in shearing mouth meshing or specially-made nippers are used, and the using mode of inclined shearing is adopted. Irrigation is carried out immediately after stumping, and the influence of evaporation on the stumped nursery stocks is reduced. After stumping is carried out for one month, bud picking processing is carried out, axillary buds and root suckers germinating between the lower portion of the stump and the ground are sheared off through the hand shears so that nutrition can be concentrated, and the trunks of the nursery stocks are maintained throughly straight. Meanwhile, fertilizer and water management is enhanced, and weeds are removed in time.