47results about How to "Promote root growth" patented technology

The invention relates to the transplantation field of trees, in particular to a big-tree transplantation method for achieving a high survival rate. The big-tree transplantation method comprises the following steps that (1) big trees growing strongly are selected, and according to design requirements and the principle of matching species with the site, tree forms, pest and disease damage situations, growth habits, and longitude, latitude and altitude related technical indexes are selected; (2) branches and leaves of the big trees are trimmed; (3) roots of the big tree are cut; (4) the big trees are transplanted; (5) management is conducted after transplantation. According to the technical scheme, the big-tree transplantation method has the advantages that the survival rate is high, and rooting powder is applied to the roots so as to facilitate root growth and prevent rot and insect damage. The big-tree transplantation method is frequently suitable for transplanting Chinese junipers, Chinese pines, white bark pines, cedrus deodara, dragon junipers, platycladus orientalis, picea asperata, fir, pinus armandii and the like, and transplanting deciduous trees and precious flowering trees such as Chinese scholar trees, goldenrain trees, fraxinus sogdiana bunge, acer truncatum bunge, ginkgoes and magnolia denudate.

The invention relates to a novel crop seeding raising method, belonging to the field of crop seeding raising. The seedling raising method is characterized in that a seedling raising matrix or porous seeding raising hole trays filled with the seedling raising matrix is/are placed on a slope nursery bed, which has a certain inclination angle and covered or not by a barrier material on the surface, a water and fertilizer supplying facility is erected at the high end of the slope nursery bed, water and fertilizer are provided for the seedling raising matrix by utilizing the inclined guiding action of the slope to promote the crop seeds transplanted in the seedling raising matrix to germinate, root and grow, seeding raising management is carried out, and seedlings are lifted and transplanted when the seedlings achieve proper transplanting seedling age. By adopting the method, the water and fertilizer are agilely managed, the inland inundation or drought is prevented, the disease and pest are reduced, the seedling forming rate is high, and seedling domestication is carried out by inverting the seedling raising hole trays or the nursery bed, thus the strong seedlings are effectively cultured and the seedling recovering stage is shortened; and the cultured seedlings have the characteristics of flourishing root systems, strong and trim seedlings, strong viability, few or no disease plants, short seedling recovering stage, convenience for seedling taking and seedling transport for transplanting, simplicity in operation, labor saving, cost saving, high survival rate and the like.

This invention relates to a culture medium used to efficiently propagate and acclimatize tissue cultured plantlets and thereafter obtain mature plantlets, a method to produce said medium, and a tissue culture method using said medium. The plant tissue culture medium is a novel plant tissue culture medium comprised in the main of vermiculite with an average particle diameter between 0.1-10 mm and cellulose fibers of an average fiber length between 0.01-5 mm. The culture method uses said culture medium in a light-transmissible container equipped at least in part with a porous gas permeable film, preferably having an air permeability between 1-50 sec/100 ml as measured in accordance with JIS standard P8117. The solid culture medium formed from a specific type of vermiculite and cellulose fibers enables the culturing process as a whole to be performed easily and efficiently. Root development and plant growth are good, and healthy plants can be produced in a single culturing without the need for an acclimatization stage. Plantlets can also be transplanted directly without damaging the roots. Moreover, when this medium is used in combination with a light-transmissible container equipped with a gas permeable film, the aforementioned efficacy is noticeably improved.

The invention belongs to the field of novel multi-functional fertilizer, in particular to multi-functional composition for increasing the production of tuber crops. The active ingredient of the composition is composed of choline chloride, amino-oligosaccharin, diethylaminoethyl hexanoate, naphthylacetic acid, humic acid, potassium sulfate, monopotassium phosphate and magnesium sulfate heptahydrate. The multi-functional composition for increasing the production of tuber crops is novel multi-functional fertilizer, is featured with no residue, no pollution and no resistance in the agriculture and is capable of obviously accelerating the tuber crop root growth and improving the tuberous root and tuber production.

The invention provides a device suitable for multi-terrain automatic tree planting, and belongs to the technical field of tree planting devices. According to the technical scheme, the device applicable to multi-terrain automatic tree planting comprises a frame, a walking component arranged at the bottom of the frame, an earth cutting and drilling mechanism arranged at the front end of the frame, aseedling preparation component arranged at the top of the frame, a seedling preparation driving assembly arranged on the frame and used for controlling the seedling preparation component, and a treeplanting assembly arranged on the rear end of the frame and matched with the output end of the seedling preparation component. The device has the beneficial effects that the device suitable for multi-terrain automatic tree planting is high in automation degree, high in tree planting operation efficiency, high in planting quality, accurate in conveying, good in continuity and high in sapling survival rate.

The invention discloses a method suitable for cultivating grapes in poor soil regions, comprising following steps: preparing land in a horizontal or terrace way, ditching along the contour line with width and depth of 0.8-1.2m respectively, hanging plastic films at two vertical walls at two sides of the ditch, extending the plastic films to the bottom and leaving a gap to expose 20-30cm of soil; filling high quality garden soil or improved surfical soil into the ditch, evenly adding 100-200g/cubic meter of water retention agent in the middle and lower layer of soil, and finally filling the soil till the ditch surface is shaped like a concave channel; using the films to cover from two sides to internal, planting a raw of grapes at the central part of the ditch surface, opening the films at stems of plants; and irrigating by watering on the films. The method not only can enhance use ratio of the land resource effectively to produce more high quality grape product, but also has advantages of inhibiting vegetative growth of the plants, promoting fructifying, saving rich water and being environmental friendly, therefore the method can be widely popularized and used in the regions with irrigation water sources.

A diammonium phosphate fertilizer containing K is prepared from potassium sulfate (or chloride) (10-18 Wt%), N fertilizer (ammonium chloride, ammonium sulfate, ammonium dicarbonate, or urea) (12-18), P fertilizer (diammonium phosphate) (24-36), Fe-Si fertilizer (0.3-0.4), Zn-B (0.3-0.4) SiO2 (2-2.5) and resin oil (0.5-1). Its advantages are slow release, and high effect to improve soil and increase yield and quality of agricultural crops.

A horizontal auger garden tilling apparatus and method of use having an outer frame, an inner frame which pivots with the outer frame, and a rotating auger capable of tilling soil to depth which conventional tillers cannot begin to reach. The apparatus is moved and the method of use is performed via attachment with a tractor or other movable carriage which provides enough horizontal force to move the auger through the soil and provides auger rotational power. A trencher attachment prevents auger soil refilling and allows the apparatus and method of use to be utilized and performed in conjunction with trenching operations.

The invention relates to a method for ecological renovation of suburban hardened revetments. The method includes: removing a hardened structure of a suburban revetment and eliminating the gradient to facilitate rooting and growing of plants and water and soil conservation; laying ecological soil and fixing the soil by a preserving trough to prevent collapse and water and soil loss of the revetment; and arranging reasonable plants to beautify the revetment and purify water. The suburban hardened revetment is ecologically renovated by taking measures like de-hardening, gradient elimination, ecological soil laying and fixing, beautifying and purifying plant arranging and the like to the revetment. On the basis of combining existing ecological restoration and reconstruction of the hardened revetment, aiming at characteristics of the suburban hardened revetment, water and soil linking is realized by removing the hardened structure, and gradient elimination of the revetment provides a condition for plant rooting and is beneficial to prevention of water and soil loss. Reasonable greening, beautifying and water-purifying plants are arranged, so that ecological renovation of the hardened revetment is realized.

The invention provides a macadamia nut seedling cultivating method. The method is characterized in that H2 or OC macadamia nut variety seedlings are used as stock, the first Guire macadamia nut variety is used as scions, and the cleft grafting method is adopted for grafting; the seedling cultivating step comprises seedling planting, scion processing and management performed after grafting. According to the method, drought hardening is performed before stock seedling germination, phosphorus and potash fertilizer is reasonably applied to the grafted seedlings, nitrogenous fertilizer is properly controlled, the root system of seedlings is promoted to grow downwards, and plants are prevented from growing upwards, so that the root system is developed and deep rooted, the ratio of the root to the crown is large, the resistance is high, and the survival rate of transplanting is high.

The present invention provides a method of using a fertilizer, comprising an amino acid selected from the group of L-glutamine, L-asparagine and L-arginine as major nitrogen source, optionally together with inorganic nitrogen and/or a suitable preservative, for stimulating root growth, inducing more fine roots, increase the number of root tips and/or for stimulating mycorrhiza development.

The invention discloses a planting method for improving Chinese yam yields, and relates to the technical field of Chinese yam planting. The method comprises the following steps: (1) selecting seeds and conducting pretreatment; (2) accelerating germination and breeding the seeds; (3) selecting land; (4) preparing the land; (5) conducting transplantation and conducting field planting; (6) conducting field management; and (7) conducting harvesting. The planting method can improve the Chinese yam yields and the Chinese yam quality, and is suitable for large-area promotion.

The invention relates to organic fertilizer and a preparation method thereof. The organic fertilizer comprises main materials, auxiliary materials and microflora, wherein the main materials comprise the following raw materials: human and animal waste, fruit residue, cane trash, grain stillage, saccharified residue, vinegar residue, starch pulp, cassava residue, citric acid residue, soy sauce residue, sodium glutamate residue, soybean curb residue, oil residue, rape cake, cottonseed and rapeseed meal and slops; the auxiliary materials comprise the following raw materials: furfur, sawdust, ricehull flour, leaves and weeds, melon vines, rice straw, pine nut shells and peanut shells; the microflora comprises the following bacteria: bacillus subtilis, bacillus megatherium, bacillus mucilaginosus, bacillus licheniformis, bacillus thuringiensis, bacillus laterosporus, bacillus mucilaginosus, streptomyces jingyangensis, mycorrhiza fungi, azotobacter vinelandii, bacillus coagulans, aspergillusoryzae and paecilomyces lilacinus. The organic fertilizer can promote the growth of crop roots, improve the fertilizer absorption capacity and reduce the occurrence of pest damage, ensures that the content of nutritional ingredients in crop fruits is high, and is simple in preparation method.

The invention discloses a lodging-resistant method for growing tomato seedlings. The lodging-resistant method includes selecting seeds and accelerating germination; preparing bed soil; sowing the seeds; carrying out seedling stage management; supplementing fertilizers. The lodging-resistant method has the advantages that the seedlings keep short and strong by means of temperature control on the basis of conventional technologies, stretching and deep rooting of root systems of the tomato seedlings can be effectively promoted by added nutrition particles, the toughness and the bearing capacity of the stems of the tomato seedlings can be improved by added sodium alginate and added fungi residues, accordingly, the lodging-resistant capacity can be greatly enhanced under the comprehensive effects, and obvious effects of increasing the tomato yield can be realized.

The invention discloses a nutrient solution for increasing the survival rate of paper mulberry tree seedlings, and belongs to the technical field of paper mulberry tree planting. The nutrient solutioncomprises the following components in parts by weight: 13-17 parts of diphenylurea sulfonic calcium, 8-11 parts of naphthylacetic acid, 20-26 parts of compound sodium nitrophenolate, 6-7 parts of o-dihydroxybenzene, 80-88 parts of glucose, 17-19 parts of inositol and 130-140 parts of water. A preparation method of the nutrient solution comprises the following steps: I, preparing the raw materialsin parts by weight; II, dissolving the diphenylurea sulfonic calcium into water of 30-40 DEG C so as to obtain a solution A; III, mixing the o-dihydroxybenzene with the glucose so as to obtain a solution B; IV, firstly, mixing the solution A with the solution B, leaving to stand for 55-60 minutes, further adding the inositol, the naphthylacetic acid and the compound sodium nitrophenolate, and mixing, thereby obtaining the nutrient solution. The nutrient solution disclosed by the invention is prepared from multiple hormones, sucrose substances, inositol and water, root system growth of paper mulberry trees can be promoted, the adsorption capability of root systems of the paper mulberry trees can be enhanced, and the survival rate of the paper mulberry tree seedlings can be increased.

The invention discloses nutrient soil for succulent plants. The nutrient soil is characterized by being prepared from the following raw materials in parts by weight: 20-30 parts of peat, 10-20 parts of bagasse, 5-8 parts of slaked lime, 5-10 parts of chitosan, 5-10 parts of bran, 5-10 parts of diatomite, 5-8 parts of pelelith, 3-5 parts of perlite, 3-5 parts of urea, 3-4 parts of potassium chloride and 3-5 parts of calcium-magnesium-phosphate fertilizers. The nutrient soil has a loose texture, proper humidity and good gas permeability and is capable of retaining water and fertilizers and effectively promoting the rooting and growing of plants.

The invention relates to the technical field of cultivation, in particular to an ecological cultivation method for moringa oleifera. The method includes fertilization, land preparation, sowing and field management. According to the method, good satisfactory land is selected to build an orchard, minerals with good water absorption, carbon nanoparticles and base fertilizers are adopted to improve the soil, and then seedling planting and solidago virgaurea sowing are conducted, so that the fertilizer efficiency element content of the soil is effectively increased, the fertilizer maintenance and water retention capability of the soil are improved, and the growth and the development of the roots of the moringa oleifera are remarkably improved. The base fertilizers and nutrient soil have high microbial activity after fermentation, the soil biological activity is remarkably improved, the formation of soil granular structure is promoted, and the aim of optimizing the physical and chemical properties of the soil is achieved. The planted moringa oleifera is high in yield and nutritious.

The invention provides a water-soluble fertilizer containing amino acid. The water-soluble fertilizer is prepared from the following components of marine algal glycoprotein, complex amino acid, brassin, 4-ethyl iodophenoxyacetate, a plant growth regulator, medium element composition and mannitol calcium. The water-soluble fertilizer containing the amino acid has the advantages that the output capacity is increased, the yield increase rate is 20%, and the color turning rate of fruit is 98.1%. The invention also provides a preparation technology of the water-soluble fertilizer containing the amino acid. The preparation technology comprises the following steps of soaking by alcohol, primary activating, secondary activating, fermenting and mixing. The prepared water-soluble fertilizer containing the amino acid has the advantages that the growth of roots can be strongly promoted, and the damaged root is restored; after the water-soluble fertilizer is applied to the crop, the anti-freezing,anti-drought and anti-disease abilities are obviously improved, and the nematodes, whiteflies and aphids can be repelled; the effects of promoting the growth of crop, promoting swelling of fruit and advancing selling on market are realized, and the output is increased by 20%; the soil can be regulated, the air ventilating property of the soil is improved, and the effects of maintaining water and fertilizer, immobilizing nitrogen, decomposing phosphorus and decomposing potassium are realized.

The invention relates to the fertilizer processing field, and provides a novel slow-release particle magnesium fertilizer. A preparation method comprises the following steps: taking magnesium sulfate monohydrate and magnesium oxide as powder, mixing according to corresponding proportion, under acidic medium condition, adding water-soluble chitosan in an acidic medium for dissolving, performing polymerization for granulation, wherein the magnesium fertilizer comprises the following raw materials by mass part: 60-85 parts of magnesium sulfate monohydrate and 15-40 parts of magnesium oxide; taking citric acid and/or diluted nitric acid as an acidic medium, and preparing an water-soluble chitosan solution with mass concentration being 0.1-5%. The produced product has the advantages of uniform particles, mellow shape and high intensity. The fertilizer can be chelated by water-soluble chitosan polyfunctional group, its salt has film moulding property, magnesium fertilizer particles can be uniformly released with quick action, intermediate action and long action, requirements of magnesium of crop during a whole fertility period can be fully satisfied, fertilizer efficiency is high, and economic benefit is obvious.

The invention discloses a special organic fertilizer for cress and a preparation method thereof. The special organic fertilizer comprises the following raw materials in parts by weight: 30-50 parts of dry manure, 15-25 parts of vegetable cake, 10-20 parts of monocalcium phosphate, 5-10 parts of fish bone meal, 5-10 parts of animal bone meal, 10-20 parts of straw, 5-10 parts of potassium mineral powder, 5-10 parts of plant ash, 1-5 parts of a water retaining agent and 1-2 parts of a soil loosening agent. The soil loosening agent comprises the following raw materials in parts by weight: 1-3 parts of yeast, 2-5 parts of sodium bicarbonate, 1-2 parts of vitamin C, 1-2 parts of an emulsifier and 1-2 parts of vanillin. The special organic fertilizer provided by the invention is designed and produced according to the growth habit and the nutritional requirement characteristic of the cress, and can improve the soil structure. After the special organic fertilizer is applied into soil, the surrounding compact soil can be loosened with the regular variations of water swelling and drying shrinkage of the special organic fertilizer; the special organic fertilizer can effectively restrain evaporation of water to achieve the purpose of water conservation and increase the saturation moisture content of the soil, thereby slowing down water release of the soil and accumulating more nutrients for strengthening the roots of cress.

The invention provides a special concentrated water-soluble fertilizer for blueberries as well as a preparation method and an application method of the special concentrated water-soluble fertilizer, wherein the special concentrated water-soluble fertilizer is prepared from the following components: a macroelement nutrient solution A and a trace element nutrient solution B, wherein the macroelementnutrient solution A comprises 1.2-4.80 mol/L of ammonium sulfate, 0.6-2.40 mol/L of calcium nitrate tetrahydrate, 0.4-1.60 mol/L of potassium nitrate, 0.20-0.80 mol/L of magnesium sulfate and 0.20-0.80 mol/L of monopotassium phosphate; and the trace element nutrient solution B comprises 0.20 mol/L-0.60 mol/L of manganese sulfate, 0.10 mol/L-0.50 mol/L of boric acid, 0.005 mol/L-0.015 mol/L of copper sulfate, 0.05 mol/L-0.15 mol/L of zinc sulfate, 0.005 mol/L-0.015 mol/L of sodium molybdate, 0.10 mol/L-0.50 mol/L of ferrous sulfate and 0.10 mol/L-0.50 mol/L of ethylene diamine tetraacetic acid. According to the method, the requirements of blueberries for nutrient elements and the physical and chemical properties of soil are comprehensively considered, and the pH value and porosity of soilimprovement in the production process can be continuously stabilized. Compared with a traditional fertilization mode, the fertilizer investment is small, the absorption and utilization rate is high, soil protection is better facilitated, and sustainable production of blueberries is achieved.

The invention provides a method for improving the survival rate of a temporarily planted sugarcane tissue culture seedling. The method adopts the technical scheme that after 55-67% of fresh countryside dung is mixed with 35-43% of vegetable field mug, the mixture is fermented to be ripe for serving as low-layer material ingredients of a seedling bed of the sugarcane tissue culture seedling, the upper layer of the seedling bed is river sand, and in the temporary planting period of the sugarcane tissue culture seedling, a 60w incandescent light is used for manually lighting for 12 hours every night for prolonging the lighting time so as to enhance the growing capability of the sugarcane. The method is wide in source of raw materials, environment friendly, simple in operation, convenient to manage and easy to popularize and has an effect protecting the environment, the nutrition absorption of the sugarcane tissue culture seedling is effectively promoted, the rooting and growing of the sugarcane are promoted, the survival rate is doubly increased, and the production cost is reduced.

The invention provides a furrowing machine for forming flat-bottom sugarcane planting furrows. The furrowing machine comprises a frame and a deep scarification plough, a first rotary tillage device, afurrowing device and a second rotary tillage device which are sequentially arranged below the frame and is characterized in that the first rotary tillage device comprises a first rotary tillage shaftand first rotary tillage blades arranged on the first rotary tillage shaft at intervals; the second rotary tillage device comprises a second rotary tillage shaft and second rotary tillage blades arranged on the second rotary tillage shaft at intervals, the middles of the first rotary tillage shaft and the second rotary tillage shaft are respectively provided with a first transmission device and second transmission device, and the first transmission device and the second transmission device are connected through a transmission shaft; the first rotary tillage blades on the left side and the right side of the first transmission device are symmetrically arranged, the tail end of each first rotary tillage blade bends outwardly, the second rotary tillage blades on the left side and the right side of the second transmission device are symmetrically arranged, and the bending directions of the tail ends of two adjacent second rotary tillage blades are opposite. The furrowing machine has the advantages that a planting furrow formed by the furrowing machine has a flat bottom and contains loose soil 40-60cm in thickness, moisture and nutrition can be kept favorably, sugarcane tillering and root system growth can be promoted, and sugarcane yield can be increased.

The invention relates to a special controlled release fertilizer for poinsettia and a preparing method thereof. The fertilizer is obtained by compounding modified epoxy resin coated urea with different coating amount, modified epoxy resin coated ammonium phosphate, modified epoxy resin coated potassium nitrate, modified epoxy resin coated sulphate-potassium magnesium, diammonium nitrate, etc. The special controlled release fertilizer for poinsettia is applied during transplantation, has advantages of saving labor and power, improving fertilizer availability ratio, and satisfying request of nitrogen, phosphorus and kalium during different growth periods.

The invention discloses a facility vegetable field secondary salinization soil conditioner and application thereof. The facility soil conditioner is composed of the following components in parts by weight: 70-85 parts of organic fertilizer, 1 part of mineral source humic acid and 10-30 parts of calcium carbonate. The facility soil conditioner can improve the soil structure, promote the formation of a granular structure and reduce the soil salinization and acidification degree; the content of organic matters or humus in soil can be increased, so that the nutrient holding capacity of the soil can be improved, and the fertilizer retention capacity of the soil is improved; the facility soil conditioner can also improve the activity of beneficial microorganisms in soil, optimize soil microflora, promote conversion and absorption of plant nutrients in soil, enhance the fertilizer supply capacity of soil, enhance the disease resistance of crops, increase the yield of crops and improve the quality of agricultural products. Results of the embodiment show that after the facility soil conditioner is applied, the microbial activity of soil is increased, the yield is increased by 5-15%, the pH value is increased by 0.4-1, and the conductivity of the soil is reduced by 10% or above.

The invention discloses culture solution for dendrobium officinale. The culture solution comprises the following components by weight per litter: 20-30g/L of ammonium nitrate, 1-2g/L of monopotassium phosphate, 20-30g/L of potassium nitrate, 6-10g/L of calcium nitrate, 3-8g/L of magnesium sulfate, 2-4g/L of manganese sulfate, 0.5-1g/L of ferric sulfate, 0.5-1g/L of sodium molybdate, 0.5-1g/L of vitamin B1, 0.2-0.5g/L of vitamin B6, 0.5-1g/L of vitamin B5, 1-2g/L of Na2-EDTA, 0.5-1g/L of naphthylacetic acid, 0.2-0.6g/L of ferulic acid, 10-15g/L of banana puree, 3-8g/L of grape seeds, 0.1-0.5g/L of water-soluble carbon nano tube, 0.1-0.9g/L of indolebutyric acid, 5-8g/L of white sugar and 1-3g/L of agar. The culture solution disclosed by the invention has the advantages that since the grape seed powder is added into the culture medium, not only can the yield and the quality of the dendrobium officinale be improved, but also the biotransformation rate of the dendrobium officinale can be increased; since the ferulic acid is added into the culture medium, the indolebutyric acid is protected from being decarboxylated, and plays a full role in induction; the culture medium has rich various nutrient substances and plant hormones needed by rooting growth of the dendrobium officinale, extremely-high rooting rate and good growth of roots and stems of the dendrobium officinale can be ensured and simultaneously the content of crude polysaccharide can be increased.

The invention discloses holes and a hole tray composed of the holes. Each hole comprises a hole bottom and a hole wall, and a plurality of through holes are formed in the hole bottom; one side hole wall is provided with a strip-shaped protrusion with a groove, and the strip-shaped protrusion is perpendicular to the hole bottom. The hole tray composed of the holes is specially used for strawberry seedling growing, the strawberry arching direction can be recognized, and strawberry root growth is promoted.

The invention belongs to the technical field of preparation of organic fertilizer and particularly relates to a preparation method of organic fertilizer special for grapes. Wild chrysanthemum polysaccharides with functions of inducing disease resistance of plants and promoting growth of root systems are extracted by virtue of alcohol extraction and are added to the fermented material, and the wildchrysanthemum polysaccharides have the effects of promoting growth of the root systems of grape plants and enabling the root systems to absorb nutrients, have a certain effect on preventing occurrence of soil-borne diseases, have double effects and can partially replace chemical plant growth regulators so as to reduce chemical residues to solve the safety problem of grapes; and milfoil rhizomes,alocasia macrorrhiza rhizomes, myoporum bontioides rhizomes, grassleaf sweetflag rhizomes and derris rhizomes have the effects of killing pests and enhancing the resistance of the grape plants and arecapable of killing pest ova and germs in soil, and the use of chemical pesticides is reduced, so that the grapes are more environmentally friendly and organic.

The invention relates to the field of microbial agents, in particular to a microbial agent which can effectively improve the soil environment and prevent and improve the symptoms of root rot, root rot, seedling death, damping-off, damping-off, water chestnut blight and root retting of melons and fruits, vegetables, fruit trees, flowers, cotton and rice crops.

The invention discloses a special harrow device for plowing and preparing farmlands. The special harrow device is hung at the tail of agricultural mechanical equipment, and comprises a harrow frame. A suspension crossbeam is arranged on the harrow frame, a mounting seat is mounted between the harrow frame and the suspension crossbeam, a suspension bracket used for being connected with the agricultural mechanical equipment is hinged on the connecting seat, harrow tooth mounting shafts are distributed in the harrow frame, harrow tooth sleeves are fixedly sleeved on outer portions of the harrow tooth mounting shafts, harrow teeth with different lengths are distributed on the harrow tooth sleeves, two ends of each harrow tooth mounting shaft penetrate through the harrow frame to extend outwardly, and mounting shaft locking devices are arranged among the harrow tooth mounting shafts and the harrow frame. The special harrow device has the advantages that the mounting shaft locking devices can be adjusted, so that the harrow tooth mounting shafts can drive the harrow teeth to rotate on the harrow frame, the harrow teeth with the different lengths can be selected to level the farmlands, the depth of leveled soil can be adjusted according to actually planted crops, and root-taking and growth of the crops and irrigation for the crops are facilitated.