41results about How to "Prevent secondary salinization" patented technology

A full nutrition fertilizer of biology type and its producing method belongs to organic complex fertilizer field in biology type. The components of the full nutrition fertilizer is 20-50% of organic waste liquid, 10-30% of urea, 8-15% of diammomium phosphate, 10-25% of potassium sulfate, 5-20% of medium trace element, 1-5% of microbial inoculum, 0-0.2% of root-promoting agent; 0-2% of solutizer, effective viable count content of the microbial inoculum of more than 1010 / g. The fertilizer is produced by adding the urea, diammomium phosphate, potassium sulfate, medium trace element, root-promoting agent, solutizer into organic waste liquid and blending uniformly, then adding microbial inoculum. The invention uses the wastes to produce fertilizer with a low cost a high availability and a good prospect in the fertilizer industry. The fertilizer can be widely applied to the vegetables, melon and fruits, food, tobacco, forests and different commercial crops.

The present invention is multiple-nutrient water soluble solid composite chelated fertilizer and belongs to the field of agricultural fertilizer technology. It is prepared with the components, including monoammonium phosphate, urea, potassium chloride, magnesium chloride, copper sulfate, zinc sulfate, ferrous sulfate, manganese sulfate, boric acid, calcium citrate, composite chelating agent, pH regulator and ammonium chloride, and through chelating reaction in reaction tank at 110-115 deg.c, concentration and crystallization, high pressure exhausting and cooling crystallization. The fertilizer may be applied through drip irrigation, and has greatly raised utilization, less environmental pollution and capacity of raising agricultural product quality.

The invention discloses a high-yield sunflower planting method. The method includes the steps of 1 land selection, 2 soil preparation and base fertilizer applying, 3 seed selection, 4 seed treatment, 5 sowing, 6 field management, 7 topdressing, 8 disease and pest control and 9 harvesting. The field management includes watering, filling the gaps with seedlings, weeding, supplementary pollination and pruning. The high-yield sunflower planting method selects hybrid sunflower seeds to obtain cultivated sunflowers of good quality, is environmentally friendly to meet the ornamental needs of people and not cause environmental pollution and has significant economic and social benefits. Furthermore, the fruit of the sunflowers cultivated from the hybrid sunflower seeds is good in quality, high in yield and good in commodity characteristic.

The invention discloses special compound fertilizer for drip irrigation of greenhouse grapes, which comprises the following nutrient elements based on fertilization ratio: 164.47kg hm<-2> of N, 77.08kg hm<-2> of P205, 256.47kg hm<-2> of K2O, 24.32kg hm<-2> of CaO, 12.538kg hm<-2> of MgO, 9.30kg hm<-2> of B, 6.36kg hm<-2> of Fe, 4.22kg hm<-2> of Mn, 1.21kg hm<-2> of Cu, 0.38kg hm<-2> of Zn and 0.35kg hm<-2> of Mo. On the basis of soil nutrient-supply characteristic and law of water and nutritional demand of the grapes, the special compound fertilizer for drip irrigation of the greenhouse grapes with strong applicability is obtained by a physical method through field experiments and check research.

The invention discloses a facility cultivation method for grapes. The purpose is to solve the problems that in an existing cultivation technology for the grapes, the utilization efficiency of water and fertilizer is low, and the ventilation of rhizosphere soil is poor. The facility cultivation method for the grapes includes the steps that 1, a cultivation shed / greenhouse is prepared; 2, in seedling field planting, seedling field planting is suitable for being carried out at the spring, robust seedlings are selected for field planting, the height of the seedlings is larger than or equal to 50 cm, the thickness of the seedlings is larger than or equal to 0.6 cm, the number of plump buds is larger than or equal to four, the row spacing is set to be 0.8 m, and the line spacing is set to be 1.5 m; 3, in construction of an irrigation system, a heat pivot of the irrigation system is installed, and then a drop irrigation system is constructed inside the cultivation shed and connected with the head pivot of the irrigation system; 4, water and fertilizer management is performed; 5, in temperature management, the temperature at daytime inside the cultivation shed / greenhouse is 23-28 DEG C, and the temperature at night inside the cultivation shed / greenhouse is 15-20 DEG C, wherein during frosting, the surface layer of soil can be covered with a layer of straw or straw matting, and the thickness of the straw or the straw matting is 5 cm; 6, shaping and trimming are performed; 7, diseases and insect pests are prevented and treated; 8, corn straw matrixes are supplied.

The invention discloses a saline and alkaline land improvement method. The improvement method comprises the following steps: crushing plant straw to prepare plant straw powder, then, scattering the plant straw powder into saline and alkaline land, and carrying deep ploughing and turning; applying a mixture consisting of soybean meal, furfural residues, activated biochar powder, a microbial agent,inorganic fertilizer, natural zeolite powder, mineral-sourced humic acid and modified calcium alginate aerogel to the surface layer of the saline and alkaline land, and using a rotary cultivator for rotary cultivation and mixing; flattening the soil surface layer of the saline and alkaline land, uniformly sowing alfalfa seeds on the flattened saline and alkaline land, then, performing earthing up,and controlling the sowing depth at 1-2 cm; during harvesting, keeping the stubble height of alfalfa at 5.5-7.5 cm; carrying out deep ploughing, turning and burying on the saline and alkaline land toturn and bury the alfalfa stubbles in the soil; and then, planting wheat or corn crops. The method can effectively reduce the soil alkalization degree and salt content, and the physiochemical properties of the soil are effectively improved.

The invention discloses a method for governing and improving soda saline and alkaline land through magnet tailing composite modifying agents. Tourmaline powder is accommodated in multiple-hole small cloth bags connected to a long rope and is evenly scattered onto a paddy field surface to make the paddy field surface make sufficient contact with tourmalines, water is completely drained after 4-5 days of field soaking, fresh water is supplemented, soaking is carried out 4-5 days, water is drained, salt leaching is carried out, and the modifying agents are applied, wherein the modifying agents are formed by mixing magnet tailing powder, fermented organic fertilizer and furfural residue; water filling, field harrowing, mud making and transplanting are carried out, and conventional rice cultivation technological management is carried out. The tourmalines are utilized to improve the salt leaching effect and quickly reducing salinity, and water drainage and salt leaching carried out before transplanting is carried out on the soda saline and alkaline land aim to quickly reduce salinity. Because saline-alkali soil is covered with the magnet tailing powder, physical properties of the soil can be changed, rain can more easily infiltrate downwards, surface soil salt can be leached, soil becomes rough in texture, and salt and alkali recovery is prevented. A drip line rises, water can not arrive at the ground directly easily, and salt is prevented from accumulating towards the earth surface. Poor physical characteristics like coldness, poor permeability and adhesion of alkali land are improved, less salt can rise, the soil is loosened, the saline and alkaline land is well improved, and secondary salinization is avoided.

The invention discloses a solar shallow-layer underground salt water in-situ desalting device which comprises a solar panel, a storage battery and a low-temperature evaporation device. The solar panel generates power and stores the power into the storage battery, the storage battery powers the low-temperature evaporation device which is composed of a heating wire, a temperature detector and a temperature control switch, the heating wire is buried around a soil water-containing layer, the temperature detector is buried at a middle area of the heating wire, and the temperature control switch is connected with the storage battery. By using the device, water content of a soil surface layer area can be increased, and a certain amount of water can be provided to plants planted on a surface layer. Through low-temperature evaporation effect of the device, capillary effect of soil is changed to enable fresh water to move towards the soil surface layer, movement of salt water is controlled effectively, and the device has effect of preventing soil secondary salination. The device is directly mounted between shallow-layer underground water and an interface of the soil and directly heats a target area, so that heat loss in the process is reduced effectively, overall energy source utilization efficiency of the device is improved, power needed for running per day can be reduced, and designing flexibility of the device is improved.

The invention relates to a head chute separated type ballastless track cutting bed structure for middle-strong salinized soil soil areas, in order to solve the technical problems of the high speed railway ballastless track design and meet the deformation control and durability requirements for high speed railway ballastless tracks. The head chute separated type ballastless track cutting bed structure comprises reverse L-shaped protecting layers, longitudinal seepage salt-removing blind gutters, base separating layers and drainage ditches, wherein the reverse L-shaped protecting layers are arranged on the slopes on the two sides of the bed excavation; the longitudinal seepage salt-removing blind gutters are arranged at the slope toes of the reverse L-shaped protecting layers on the two sides of the bed; the base separating layers are arranged above the bed bottom and the longitudinal seepage salt-removing blind gutters; a lower structural layer of the bed bottom, an upper structural layer of the bed bottom, a bed separating layer and a bed surface layer are successively paved above the base separating layers from bottom to top; the drainage ditches are arranged on the two sides of the upper structural layer of the bed bottom.

The invention discloses a land consolidation method capable of increasing effective cultivated land area. The method comprises the steps of firstly, dividing field between two branch ditches and two lateral draining ditches, dividing field blocks in the field, and leveling land in the field blocks; secondly, respectively building hardened field ditches in boundary positions of all the field blocks, ensuring that the head ends of the field ditches are connected with lateral canals, the tail ends are connected with the lateral draining ditches, the canal ratio is reduced to 1000:1 to 300:1, and the upper opening of each field ditch is lower than field surfaces on two sides, and additionally arranging a controlling gate at the junction of each the field ditch and each lateral draining ditch; thirdly, arranging a plurality of conical large open wells on identical sides of the field ditches at intervals, and ensuring that the large open wells beside adjacent field ditches are distributed in a staggered way; and fourthly, arranging a diving pump in each large open well, connecting the water outlet with the large open well, and arranging an automatic control switch on each diving pump. The method can rapidly remove excess surface water, ensures that the excess surface water rapidly infiltrates into earth mass and leaches saline matter in the earth mass, reduces the direct runoff rate, surface layer nutrient loss and water logging damage, can increase the effective cultivated land area, and facilitates irrigation.

The invention provides a prevention and control method for greenhouse soil secondary salinization, and relates to the technical field of greenhouse soil salinization prevention and control. The methodbegins from soil salinization factors, nitrogen fertilizer application is reduced, fertilizer increasing and salinity control are performed on soil by adopting a substrate and a modifier, salinity washing by irrigation is performed in a fallow period, reasonable irrigation is performed in a planting period, salt return is controlled, and therefore the method can effectively control the soil salinization, does not have bad influence on the soil, does not pollute environments, and is beneficial for sustainable development of facility agriculture.

The invention discloses bacillus subtilis and application thereof in greenhouse soil remediation. By carrying out strain isolating, screening, breeding and domesticating on a greenhouse soil sample as well as through 16S rDNA sequencing and phylogenetic analysis, 70-80 parts of bacillus subtilis XHS0035Kc CGMCC NO.9434, 20-40 parts of pseudomonas fluorescens, 25-45 parts of bacillus mucilaginosus and 15-35 parts of sporidiobolus pararoseus are mixed, and a mixed strain liquid is fully adsorbed in a carrier and is mixed with accessories, wherein the carrier is selected from greenhouse soil and the accessories include urine and calcium superphosphate; a greenhouse soil remediation compound is prepared by virtue of a fermentation technology; and the soil remediation compound has an outstanding technical effect in greenhouse soil remediation.

The invention discloses a method for promoting the rapid growth of tamarix chinensis in severe saline-alkali soil and increasing a planting benefit. The method comprises the following steps: seedbed construction; cutting treatment; cuttage planting, namely directly inserting a cutting end dipped with rooting powder into soil, and exposing the top end of a cutting out of the ground by 2-3cm; soil covering and heat insulation; fertilizer application, namely starting to germinate tamarix chinensis subjected to cuttage from the end of March to the beginning of April in the next year, and at the moment, properly applying a fertilizer to be beneficial to the rapid growth of tamarix chinensis; and carrying out management and stumping. Compared with an existing technology, the method disclosed bythe invention has the advantages that the increments of stem diameter, plant height and crown breadth of the tamarix chinensis are remarkably increased, the reduction of the later-period growth speedafter the vigorous growth period of the tamarix chinensis is obviously delayed, the salt content of the section of the soil is also remarkably reduced, and the contents of Na<+> and Ca<2+> in leaves of the tamarix chinensis are remarkably increased. The usage amount of the fertilizer is greatly reduced, the utilization ratio of the fertilizer is increased, the loss of the fertilizer is reduced, and the win-win goals of rapid and green development as well as efficient improvement of the saline-alkali soil are achieved.

A preparation method of a shell powder organic fertilizer biological conditioner comprises the following steps: A, preparing shell powder: cleaning shells with clear water, drying, soaking the cleanedand dried shells in a sodium hydroxide solution with the mass concentration of 0.2% for 40 minutes, cleaning again, and drying for later use; and then crushing; B, preparing an organic fertilizer: mixing pig manure compost with an amino acid organic fertilizer according to a weight ratio of 1: 1; and C, mixing: uniformly stirring and mixing the shell coarse micro powder obtained in the step A andthe organic fertilizer obtained in the step B according to a weight ratio of 1: 2 to prepare the shell powder organic fertilizer biological conditioner. The shell powder is combined with the organicfertilizer to replace an industrial fertilizer, the soil structure and physical properties can be improved, the water and fertilizer retention capacity of soil is improved, meanwhile, damaged soil microbial populations can be recovered, and the purposes of high yield, high quality, high efficiency and continuous land utilization of vegetable production are achieved.

The invention discloses a sand cultivation mode, comprising the steps of setting planting ditches in a protected land, wherein the planting ditches are 0.8 m spaced, and a drain ditch 0.35 m in depthis arranged at the outer side of each planting ditch; covering the inside of the drain ditches with mulch, fixing well, and setting an underground liquid reservoir at the tail end, except for the cultivation area, of the protected land; allowing water in the planting ditches to smoothly flow from inside to outside, and covering the inside of the planting ditches evenly with HDPE (high-density polyethylene) to tightly wrap the two sides, inner side and outer side of the planting ditches; mixing well slag and sand in the mass ratio of 3:5, spreading the mixture evenly into the planting ditches,laying substrate, using water mixed with a disinfectant to irrigate the planting ditches by flooding, and washing the substrate twice; laying dripper tubes above the substrate, and covering with mulch. The sand cultivation mode has low input cost; the slag and sand can be taken in situ; the sand cultivation mode is simple to perform and is easy for common people to accept; the sand cultivation mode provides better convenience and high speed, and saves time and labor.

A method for increasing the crop yield and planting efficiency in a heavy saline-alkali land comprises the following steps of: planting technologies of a pioneer crop of oil sunflower: building a raised field, desalting soil, covering the soil with a mulching film, uncovering the soil at strip-shaped intervals, applying conditioning agent, fertilizing and sowing, fixing seedlings and weeding, intertilling and hilling, removing superfluous discs and nutrient-free leaves, harvesting at the right time, and rotating crops; planting technologies of later crop of cotton: desalting the soil, coveringthe soil with a mulching film, uncovering the soil at strip-shaped intervals, applying conditioning agent, fertilizing and sowing, fixing seedlings, harvesting, and rotating crops. By using the method, the yield of the oil sunflower and cotton in the heavy saline-alkali land is obviously improved compared with the prior art, the dosage of the fertilizer is greatly reduced, the fertilizer utilization rate is improved, the fertilizer loss is reduced, the soil fertility of the saline-alkali land is obviously improved, and the nutrient and salt are balance are coordinated. Besides, the method makes full use of the phonologies and natural resources such as natural light, heat, rainfall, underground salt water and saline-alkali soil and the like, and avoids harmness and gets benefits, and realizes the green development and the low-carbon cycle of the barren and heavy saline-alkali land.

The invention discloses a method for breaking through multiple impervious layers of difficult afforestation soil. The method comprises the following steps of A, leveling a land parcel to be afforestedaccording to the terrain; B, determining planting ditches on the levelled land according to the types of trees or shrubs to be planted; C, determining the positions and the number of poles of the planting ditches; D, mechanically punching impervious layers to form vertical holes; E, filling sand back into the vertical holes and compacting the sand, and mounting filtering tubes as into a part of the vertical holes as observing holes; F, periodically observing the water level change in the vertical holes. The method for breaking through the multiple impervious layers of the difficult afforestation soil is based on engineering physical measures to break through the impervious layers of difficult afforestation underground soil to form a mesh shape, so that rainwater or upper underground waterformed by irrigation can be displaced downwards to reduce the content of salt and alkali in soil of an afforestation arable layer, reach the critical depth of underground water and avoid death of afforestation seedlings due to secondary salinization caused by irrational irrigation. The method for breaking through the multiple impervious layers of the difficult afforestation soil is low in cost, easy to operate, rapid in effect, good in desalination effects and capable improve the seedling survival rate.

The invention discloses a method for treating saline-alkali soil of coastal saline-alkali soil through the combination of engineering and chemical improvement, and belongs to the technical field of saline-alkali soil improvement. The method for treating the saline-alkali soil of the coastal saline-alkali soil through the combination of engineering and chemical improvement comprises the steps of (1) concealed conduit laying pretreatment, (2) concealed conduit laying, (3) soil conditioner application, (4) crop planting and the like. By adopting the method for treating the saline-alkali soil through the combination of engineering and chemical improvement, when rice is planted on the coastal saline-alkali soil, on the one hand, a remarkable salt reduction effect is achieved on the saline-alkali soil through engineering measures, and on the other hand, the physical and chemical properties of the soil can be adjusted through matching of a soil conditioner, so that the overall improvement effect on the soil is further achieved.

The invention discloses a saline soil foundation treatment method, and belongs to the technical field of constructional engineering. The method comprises the steps that high-pressure water injection holes are formed in the periphery of a road panel on a saline soil foundation, and high-vacuum water absorption holes are formed in the center point; the high-vacuum water absorption holes are blocked,and water is injected into the saline soil foundation from the high-pressure water injection holes; after water in the saline soil foundation is saturated, water injection is stopped, and the high-pressure water injection holes are blocked; and the high-vacuum water absorption holes are opened, and water dissolved with salt is sucked out from the high-vacuum water absorption holes. According to the saline soil foundation treatment method, the high-pressure water injection holes are formed in the periphery of the road panel on the saline soil foundation, the high-vacuum water absorption holesare formed in the center point, a seepage field is formed between the high-pressure water injection holes and the high-vacuum water absorption holes, the salt dissolved in the water is sufficiently discharged out of the soil foundation, the secondary salinization phenomenon of the saline soil foundation is prevented, and the treatment effect of the saline soil foundation is improved.

The invention discloses an improvement method for highway medium separation area snow-melting agent salt damage soil. The improvement method comprises the steps that a medium separation area is uniformly divided into a plurality of same soil improvement units in the front-back direction of a highway; an improvement process of each soil improvement unit comprises the steps of soil discharging pond arrangement, leaky pipe and drain pipe burying, drainage arrangement and soil improvement; and soil improvement is conducted by sequentially laying a soil improvement layer, an organic substrate layer and a Moqi covering layer on the surface of the soil. According to the improvement method for the highway medium separation area snow-melting agent salt damage soil, the disoperation effect of a salt type snow-melting agent on the soil is converted through the soil improvement layer; soil renewing is facilitated through the organic substrate layer, the soil activity and fertility are increased, and plant layers are increased at the same time, so that the landscape effect of medium separation area landscapes is improved; by laying the Moqi covering layer, turning waste into wealth can be achieved, and the economic and ecological benefits as well as the environmental protection effect are achieved; salt discharging and separating are facilitated through leaky pipe laying, so that secondary salinization and alkalinization are prevented; and the improvement method is easy to construct, convenient to operate, capable of being used circularly and suitable for large-scale application in areas along the highway.

The invention discloses a fertilizing method for relieving secondary salinization of greenhouse soil. The fertilizing method comprises a technology of replacing chemical fertilizer with low-salt organic fertilizer and a technology of balanced application of water-soluble fertilizer, and specifically comprises the following steps: applying 800-1,000 kg of low-salt organic fertilizer and 10-15 kg ofurea to each mu, 6-8 days before crop transplantation; dressing 5-7 kg of high-nitrogen water-soluble fertilizer (22-12-16) on each mu in the middle stage of crop growth, and dressing 10-13 kg of high-potassium water-soluble fertilizer (19-6-25) on each mu in the later stage of crop growth, wherein the dressing is performed in a drip irrigation way. According to the method disclosed by the invention, by applying low-salt organic fertilizer instead of chemical fertilizer to the greenhouse soil, the application of salt in the organic fertilizer can be reduced, and secondary salinization of thesoil caused by long-term application of organic fertilizer is avoided; meanwhile, by coupling the applying technology of low-salt organic fertilizer with the balanced application technology of special water-soluble fertilizer, the yield can be increased by 0.2-45% while reducing the application of chemical fertilizer by 30-60%, and excessive accumulation of quick-acting nutrients in the soil is effectively reduced.

The invention discloses an improvement method for highway medium separation area snow-melting agent salt damage soil. The improvement method comprises the steps that a medium separation area is uniformly divided into a plurality of same soil improvement units in the front-back direction of a highway; an improvement process of each soil improvement unit comprises the steps of soil discharging pond arrangement, leaky pipe and drain pipe burying, drainage arrangement and soil improvement; and soil improvement is conducted by sequentially laying a soil improvement layer, an organic substrate layer and a Moqi covering layer on the surface of the soil. According to the improvement method for the highway medium separation area snow-melting agent salt damage soil, the disoperation effect of a salt type snow-melting agent on the soil is converted through the soil improvement layer; soil renewing is facilitated through the organic substrate layer, the soil activity and fertility are increased, and plant layers are increased at the same time, so that the landscape effect of medium separation area landscapes is improved; by laying the Moqi covering layer, turning waste into wealth can be achieved, and the economic and ecological benefits as well as the environmental protection effect are achieved; salt discharging and separating are facilitated through leaky pipe laying, so that secondary salinization and alkalinization are prevented; and the improvement method is easy to construct, convenient to operate, capable of being used circularly and suitable for large-scale application in areas along the highway.

The invention relates to a method for constructing a yam irrigation mode in sandy land, including yam cultivation investigation, yam ditch irrigation section mode function design, and yam ditch irrigation section optimization. Among them, the work process of yam cultivation technology investigation is the determination of cultivation season, site selection and fertilization, fertilizer and water management, erection and pruning and harvesting; yam ditch irrigation section mode function design According to the geometric programming method, the objective function model is constructed to increase the income, and the construction suitable for sandy land is constructed. The objective function of the geometric planning of furrow irrigation of Chinese yam is solved according to the corresponding constraints. Experiments have proved that the invention has strong functionality, simple, effective, low-cost technology, and significant benefits of increasing income and reducing disasters, and can be widely used in sandy yam planting areas.

The embodiment of the present invention provides a method for high-yield cultivation of northern potatoes by drip irrigation under film, which relates to the field of potato cultivation, and can improve the water utilization rate and fertilizer utilization rate, and double the potato yield. The method includes: selecting soil and site preparation; installing a drip irrigation system; variety selection, seed potato treatment; sowing; irrigation and topdressing; fertilization management; and field management; The field water holding capacity is 65‑70%, the field water holding capacity is 75‑80% during the tuber formation period, the field water holding capacity is 75‑80% during the tuber expansion period, and the starch accumulation period is 60‑70% of the field water holding capacity; drip irrigation under mulch during the whole growth period of potatoes The irrigation quota is 80‑120m3 / 667m2; soluble fertilizers are used for topdressing, and pressure difference fertilization tanks are used; combined with irrigation, urea 15kg / 667m2 is topdressed.

The invention discloses streptomyces microflavus and application thereof in greenhouse soil remediation. By carrying out strain isolating, screening, breeding and domesticating on a greenhouse soil sample as well as through 16S rDNA sequencing and phylogenetic analysis, 70-85 parts of streptomyces microflavus XHS0032Xh CGMCC NO.9432 which is numbered as XHS0032Xh, 20-35 parts of micrococcus luteus, 25-40 parts of bacillus pasteurii and 15-30 parts of candida tropicalis are mixed, and a mixed strain liquid is fully adsorbed in a carrier and is mixed with accessories; a greenhouse soil remediation compound is prepared by virtue of a fermentation technology; and the soil remediation compound has an outstanding technical effect in greenhouse soil remediation.

The invention relates to a soil remediation type multifunctional biological fertilizer and a preparation method thereof. The preparation method comprises the following steps: fermenting a paenibacillus polymyxa strain and a bacillus pumilus strain separately to obtain a first fermentation liquor and a second fermentation liquor; respectively adsorbing the first fermentation liquor and the second fermentation liquor with an adsorption carrier to correspondingly obtain a first mixture and a second mixture; and mixing the first mixture with the second mixture to obtain a third mixture, then, mixing with inorganic nutrients to obtain the soil remediation type multifunctional biological fertilizer. The soil remediation type multifunctional biological fertilizer is applied to soil with soil-borne diseases and secondary salinization to cultivate crops. According to the soil remediation type multifunctional biological fertilizer, the application amount of conventional fertilizers can be reduced, the utilization rate of the conventional fertilizers is effectively increased, the soil environment can be improved to a great extent, the prevention and treatment effect on crop diseases is good,and the quality of crops is improved to a great extent.

The invention discloses special compound fertilizer for cultivation of winter jujube facilities and a preparation method, and relates to the technical field of soil improvement and compound fertilizer, in particular to special compound fertilizer for cultivation of winter jujube facilities and a preparation method. The special compound fertilizer is prepared from the following fertilizer applyingcomponents of urea, monoammonium phosphate, potassium nitrate, calcium nitrate, magnesium sulfate, ferrous sulfate, manganese sulfate, copper sulfate, zinc sulfate, borax, ammonium molybdate and fertilizer-level bentonite according to a ratio of 45:6:17:2.5:2.5:2:1.5:1.5:1.5:4:1.5:15. The special compound fertilizer has the advantages that the problems of fewer types of nutritional elements, poordissolvability, unreasonable nutrient composition, easiness in soil caking, unbalance of nutrients, and pollution to environment in the existing compound fertilizer are solved; the special compound fertilizer is suitable for large-area popularizing, the targeting purpose is strong, the output of winter jujube is increased, the quality of the winter jujube is improved, the waste of fertilizer and water is reduced, the utilization efficiency of water and fertilizer resource is improved, and the agricultural production cost is reduced.

The invention discloses a land consolidation method capable of increasing effective cultivated land area. The method comprises the steps of firstly, dividing field between two branch ditches and two lateral draining ditches, dividing field blocks in the field, and leveling land in the field blocks; secondly, respectively building hardened field ditches in boundary positions of all the field blocks, ensuring that the head ends of the field ditches are connected with lateral canals, the tail ends are connected with the lateral draining ditches, the canal ratio is reduced to 1000:1 to 300:1, and the upper opening of each field ditch is lower than field surfaces on two sides, and additionally arranging a controlling gate at the junction of each the field ditch and each lateral draining ditch; thirdly, arranging a plurality of conical large open wells on identical sides of the field ditches at intervals, and ensuring that the large open wells beside adjacent field ditches are distributed in a staggered way; and fourthly, arranging a diving pump in each large open well, connecting the water outlet with the large open well, and arranging an automatic control switch on each diving pump. The method can rapidly remove excess surface water, ensures that the excess surface water rapidly infiltrates into earth mass and leaches saline matter in the earth mass, reduces the direct runoff rate, surface layer nutrient loss and water logging damage, can increase the effective cultivated land area, and facilitates irrigation.