307 results about "Soil salinity" patented technology

The invention discloses a salinized soil monitoring and early warning system and method based on Internet of Things. The salinized soil monitoring and early warning system comprises measurement terminals and a monitoring center, wherein the measurement terminals are used for detecting moisture content, temperature and conductivity of soil in the zone to be detected, generating measurement data and sending the measurement data to the monitoring center through Internet of Things; the monitoring center determines status-quo distribution of soil salinity according to the received measurement data and performs visual display through a display screen. By means of the salinized soil monitoring and early warning system and method, in-situ test on soil properties is performed through the measurement terminals arranged on all monitoring points, the soil properties are sent to the remote monitoring center through the wireless network, storage, analysis and release of the measurement data are achieved, and status quo evaluation on the soil salinity and analysis early warning of the variation trend of the soil salinity in the zone to be detected are achieved. Therefore, the salinized soil monitoring and early warning system and method based on Internet of Things has important significance in effective utilization and management of coastal reserved land resources.

The invention discloses an experimental device for simulating water-salt movement of inland saline-alkali land and a method for screening different salt isolation measures and different coverage measures for preventing salt returning of the saline-alkali land by the experimental device. The experimental device comprises a soil column, a Marriotte bottle, an evaporation control box, a reverse filter layer and moisture, salt and temperature sensors. The soil column is filled with to-be-tested soil mass of the saline-alkali land, the Marriotte bottle is communicated with the lower portion of the soil column to supply water to the soil mass, the evaporation control box is mounted at the top end of the soil column, the reverse filter layer is arranged at the bottom of the soil column, and the moisture, the salt and the temperature sensors are mounted on side walls of the soil column. The experimental device is simple in structure and easy in operation and control of experimental conditions and can be used for laboratory simulation of various experiments such as influences of different measures on soil salinity movement of the saline-alkali land and influences of underground water level on water-salt movement of inland saline-alkali land, measurement results are accurate, and reliable basic data and technical support are provided for inland saline-alkali forestation.

The invention relates to a chemical improvement conditioner suitable for a coastal beach and a strongly saline-alkaline land and an application method thereof. The chemical improvement conditioner comprises the following components in parts by weight: 50-70 parts of ardealite, 20-30 parts of humic acid, 5-10 parts of aluminum sulfate and 3-5 parts of potassium dihydrogen phosphate. The chemical improvement conditioner disclosed by the invention has the advantages of simple improver component and preparation process, clarity in principle, low cost and quick effect. The application method of the chemical improvement conditioner aiming at different planting modes and soil salinity conditions provides an optimized application mode of 'less use for dry farming, more use for water farming, less use for a dry season, more use for a rainy season, more use for double salt and less use for light salt' by comprehensively considering the plant modes, soil salt contents and the rainfall difference of different seasons, thereby improving the desalting and alkali-improving efficiency, farthest decreasing the residues of an improver in soil and realizing multiple purposes of salt leaching, soil improvement and fertility improvement of the coastal beach and the saline-alkaline land.

The invention discloses a method for comprehensively treating saline and alkaline land through combination of irrigation and planting. The method comprises the following steps: (a) paving underground pipelines, including micro-moisture pipes for irrigation and salt discharge underground pipes for discharging salt; (b) leveling and furrowing the saline and alkaline land for irrigation salt discharge, wherein the irrigation salt discharge includes underground salt discharge and surface salt discharge and specifically comprises the following three steps in sequence: I, performing underground salt discharge; II, performing surface salt discharge, and performing rapid large-area surface salt discharge on the saline and alkaline land subjected to the underground salt discharge through a flood irrigation way; III, repeating the underground salt discharge; (c) planting suaeda salsa on a large area, continuously performing micro-moisture irrigation salt discharge before and after seedling emergence of the suaeda salsa, performing micro-moisture irrigation intermittently after branching of the suaeda salsa till the end of the peak-growth period of the suaeda salsa, pulling up the suaeda salsa by the roots, and planting crops or continually planting the suaeda salsa according to the soil salinity to further reduce salinity.

The invention discloses a method for planting Populus euphratica in a heavy saline-alkaline land of a Gobi desert. The method comprises the steps of: applying 5kg of organic fertilizers in a tree pit during Populus euphratica planting, then putting the roots of the Populus euphratica in water-retaining root-promoting halophilic-basophilic microorganism root dipping solution, planting a Populus euphratica seedling and applying 1000ml of water-retaining root-promoting halophilic-basophilic microorganism root dipping solution around the roots, wherein the water-retaining root-promoting halophilic-basophilic microorganism root dipping solution comprises the following components in parts by weight: one part of halophilic-basophilic microorganism solid bacterial manure for a desert saline-alkaline habitat, one part of sterilization soil, two parts of water, 0.1 part of water retaining agent and 0.002 to 0.005 part of growth hormone. The new method for planting the Populus euphratica in the heavy saline-alkaline land of the Gobi desert has the advantages that the soil salinity and alkalinity can be effectively reduced in a long term, the survival rate of the planted Populus euphratica reaches 100 percent, the growth condition is continuously good and the problem that the survival rate of trees planted in the heavy saline-alkaline land of the arid desert is fundamentally solved.

The invention discloses a preserving method for low salinity duck egg, which belongs to the technical field for the preserving method of salty duck egg and comprises the following procedures: (1) select duck eggs that comply with the processing requirements; (2) clean and sterilize the duck egg; (3) prepare A preserving fluid and B preserving fluid; (4) adopt clean and sterilized food-purpose plastic drum or jar to contain the preserving fluid; then, put the sterilized duck eggs into the drum or jar; cover the top of the plastic drum or jar with plastic net when the duck eggs fully fill; press the plastic net with appropriate sterilized lump substance; the preserving fluid shall exceed the surface of the eggs for over 2cm; finally, add covering material on the plastic drum or jar; adopt A preserving fluid from first to fifteenth day; adopt B preserving fluid from sixteenth to thirtieth day; keep the preserving house dry and clean; keep the ambient temperature at 20 to 25 DEG C.. Therefore, the preserving method in the invention is able to control the sodium chloride content in the egg white within about 4 per cent while preserving the own characteristics of salty duck egg, such as pure white in egg white, loose yolk and oil excretion.

The invention belongs to the technical field of agricultural fertilizers and relates to a soil improvement agent and a preparation method thereof. The soil improvement agent comprises the following raw materials in part by weight: 1-10 parts of fish aquatic products processing waste powder, 10-20 parts of shell powder, 1-10 parts of straw powder, 1-10 parts of diatomite, 0.1-2 parts of high-activity biological agent, 2-5 parts of acid and 1-10 parts of medical stone powder. The preparation method comprises the steps as follows: adding the raw materials into a mixer and mixing fully and uniformly to obtain the soil improvement agent. The soil improvement agent is used for improving saline alkali soil, so that the soil salinity can be reduced, the volume weight of soil can be reduced, the soil porosity can be enhanced, the soil permeability can be enhanced, the soil pH value can be reduced, the soil organic matter can be increased, and the soil fertility can be enhanced.

The invention discloses a green environment-friendly compound fertilizer prepared from three kinds of organic-inorganic nitrogen and a preparation method thereof. By mass percent, humic acid is 25% to 30% of the total amount of raw materials, liquid ammonia is 3% to 5% of the total amount of the raw materials, nitramine phosphorus is 14% to 22% of the total amount of the raw materials, urea is 14% to 22% of the total amount of the raw materials, monoammonium phosphate is 20% to 30% of the total amount of the raw materials, and potassium chloride is 8.5% to 20% of the total amount of the raw materials. The raw materials which contain organic matter, nitrate nitrogen, ammonium nitrogen, amide nitrogen and other phosphorus and potassium elements are added to ingredients. By using the fertilizer, the utilization rate of fertilizer nutrients can be improved, so that the crop yield is increased, the quality is improved, and the harm caused by toxic substances of heavy metals such as cadmium, lead, arsenic, chromium and the like, living grasshopper egg and escherichia coli can be avoided. Additionally, the soil is improved, the soil salinity is reduced, a product contains 2% to 3% of nitrate nitrogen, and the mass ratio of the amide nitrogen to the ammonium nitrogen is 1: (1 to 1.4).

A simplified efficient fertilizer specially used for corn and suitable for saline-alkali land and a manufacturing process thereof are disclosed. The fertilizer comprises, by weight, 25-30% of N, 8-12% of P2O5, 4-8% of K2O, 1-4% of humic acid, 0.2-0.5% of Zn, 0.4-0.8% of Ca and 0.4-1.0% of a nitrification inhibitor. The method and the process are advantageous in that 1) added functional factors comprising the humic acid and calcium superphosphate are acidic and can improve soil alkalinity, and calcium ions of the calcium superphosphate can exchange sodium ions in soil so as to obviously reduce soil salinity, 2) urea-formaldehyde added in a granulation step can obviously improve the granulation rate and granular strength of the fertilizer, thus overcoming a later fertilizer granule efflorescence problem, slow-release nitrogen in the urea-formaldehyde and quickly available nitrogen in urea are combined, thus meeting a corn growth absorption curve and avoiding later nitrogen deficiency for corn, and addition of the nitrification inhibitor reduces nitrogen loss and increases the nutrient utilization rate, and 3) an anti-blocking agent used in the fertilizer is synthesized through saponification, is low in cost, adopts waste grease, is green and meets the strategy of sustainable development.

A method for prescribing action to maintain a land area within a predetermined performance zone is disclosed herein. The method results in prescribing an action for the land area. The method measures soil salinity, soil temperature, soil moisture, air temperature, soil pollutant content, soil nutrient content, and the like.

A sensor for measuring the moisture and salinity of a material is disclosed herein. The sensor preferably includes a soil moisture circuit, a soil salinity circuit and a probe structure. The soil moisture circuit includes a high frequency oscillator, a voltage meter and a reference capacitor. The soil salinity circuit includes a low frequency oscillator, a voltage meter and a reference resistor. A third voltage meter allows for voltage outputs to be measured to calculate soil moisture and soil salinity values.

The invention discloses a method, a system and a device for obtaining salt of severe saline soil. The method comprises the following steps: respectively obtaining reflectance values of each band in amulti-spectral remote sensing image taken by a UAV(unmanned aerial vehicle), measured salt data of a sampling point and corresponding pixel band reflectance values of the sampling point in the multi-spectral remote sensing image; analyzing the relationship between the measured salt data of the sampling point and the corresponding pixel band reflectance values in the multi-spectral remote sensing image with a gray correlation degree method, and screening a pixel band to determine intensity parameters; constructing a salt estimation model of the saline soil by adopting a support vector machine;performing spatial distribution inversion on soil salinity in a to-be-measured area of the severe saline soil according to the salt estimation model of the saline soil, and obtaining the soil salinityin the to-be-measured area of the severe saline soil. Through the artificially measured salt data and multi-spectral remote sensing image taken by the UAV, the salt estimation model of the saline soil is established to invert the spatial distribution of the soil salinity in the to-be-measured area of the severe saline soil, so that the salt data of the severe saline soil can be quickly obtained.

The invention discloses a method for planting peanuts in saline-alkali soil. The method comprises the following steps that the peanuts are planted in land parcels with soil salinity of 0.2%-0.3%, with flat terrain, above medium soil fertility and with even fertility; broad irrigation is carried out before seeding, then low ridges are dug, film mulching and seeding are carried out, and the peripheries of the low edges are covered with high soil. By changing the planting mode, the peanuts can grow in the land parcels with the soil salinity of 0.2%-0.3%, a high yield is obtained, and the method is of great importance in effectively utilizing the increasing saline-alkali soil of our country and expanding the planting area of the peanuts.

The invention provides a special modifier for saline-alkali soil cotton fields. The modifier comprises fermented cotton stalks, phosphogypsum and sulfur. The modifier is rich in organic matters, phosphogypsum and sulfur, applicable to medially-strongly saline-alkali soil cotton fields featured by high soil salinity, high pH, strong calcareous property, poor physical structure of soil and the like, capable of quickly modifying the saline-alkali soil and suitable for the growth of crops; furthermore, if the modifier is used for a long time, the fertilizer maintaining and water retaining capabilities of soil also can be improved; a preparation method of the special modifier for the saline-alkali soil cotton fields is simple in material blending and low in production cost; a compound modifier is prepared preferably from a plurality of industrial and agricultural wastes according to physical, chemical and biochemical principles; the compound modifier is rationally applied to soil according to the different saline-alkali degrees of the cotton fields, and as a result, the soil fertility is increased, the soil structure is improved, the soil alkalinity is neutralized, the salt elimination rate of the soil is increased and the growth of cotton is promoted.

The invention discloses a high-efficiency environment-friendly compound feed for culturing litopenaeus vannamei at low salinity and a preparation method of the high-efficiency environment-friendly compound feed. The high-efficiency environment-friendly compound feed comprises fish meal, fly maggot powder, chicken meal, mycoprotein powder, acidolysis feature meal, nucleic acid yeast, soybean meal, peanut bran, meat and bone meal, shrimp shell meal, cottonseed meal, squid organ meal, high protein flour, soya bean lecithin, sea fish oil, choline chloride, vitamin C-phosphate, monocalcium phosphate, magnesium sulfate heptahydrate, potassium chloride, potassium citrate, compound multi-vitamin, compound mineral salt, and other components according to a special proportion. Cultivation tests prove that the high-efficiency environment-friendly compound feed provided by the invention is capable of completely meeting the nutrition demand of healthy growth of litopenaeus vannamei under the condition of low salinity, and has multiple advantages of effectively promoting the healthy, quick and effective growth of the litopenaeus vannamei, reducing emissions of nitrogen, phosphorus and the like to be beneficial to the environmental protection, being stable in raw material sources, low in cost, simple in preparation process and strong in maneuverability, effectively ensuring the water body stability and the bioavailability of produced litopenaeus vannamei, and the like.

An in-situ soil salinity content sensor transmitter, it is characterized that the sensor transmitter comprises two parts, a four-electrode soil salinity measurement sensor and a signal generating, signal processing device, and it uses alternating constant current signal as the measurement excitation signal, and the four electrodes of the sensor respectively constitute one pair of excitation electrodes and one pair of acquisition electrodes, and acquisition electrodes is between excitation electrodes. The output signal of the invention can real-time respond the in situ soil salinity dynamic changes, no lag time, no measuring cumulative error; the output analog value has good linear response on soil salinity content, and it can apply to in-situ soil salinity measurement of the wide field.

The invention discloses a saline-alkali land improvement fertilizer and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing 5-20 parts of phosphogypsum, 3-5 parts of a sodium ion adsorbent and 5-10 parts of medical stone in a mixing machine so as to obtain a material A; uniformly mixing 5-10 parts of an acidic conditioning agent, 15-40 parts of soluble humic acid and 20-35 parts of wood vinegar liquid, adding the obtained liquid B into the material A in the mixing machine, performing uniform mixing and stirring so as to obtain slurry C, feeding 35-50 parts of farmyard manure and 15-20 parts of straw powder into the slurry C, performing uniform mixing, feeding 2-5 parts of a microbial agent and 10-15 parts of 61-65% Tween-80 into the material liquid, and performing uniform mixing, thereby obtaining the saline-alkali land improvement fertilizer. As multiple saline-alkali land improvement measures that the soil salinity and alkalinity are improved by using a chemical method, the physical and chemical properties and the structure of soil are improved by using microorganisms, nutrient components of soil are improved by adding fertilizers, and the like, are integrated, the saline-alkali land improvement fertilizer is good in saline-alkali land improvement effects, and long in action time, and virtuous circle of saline-alkali land soil is achieved.

A sensor for measuring the moisture and salinity of a material is disclosed herein. The sensor preferably includes a soil moisture circuit, a soil salinity circuit and a probe structure. The soil moisture circuit includes a high frequency oscillator, a voltage meter and a reference capacitor. The soil salinity circuit includes a low frequency oscillator, a voltage meter and a reference resistor. A third voltage meter allows for voltage outputs to be measured to calculate soil moisture and soil salinity values.

A saline soil conditioner for coastal intertidal zone and application thereof. The conditioner comprises, by mass ratio, 2-6 parts of an organic fertilizer, 0-0.45 part of humic acid, 0.005-0.015 part of a trace additive composition, 0.025 part of urea, and 0.050 part of diammonium phosphate. The trace additive composition comprises 60% of polyacrylamide, 30% of ''732'' type cation exchange resin, 5% of cytokinin and 5% of auxin. The soil conditioner can enhance land productivity, improve soil, increase soil aggregate, increase soil biological activity, reduce soil salinity, and promote plant growth in saline-alkali soil.

The invention discloses a method for producing bio-organic fertilizers by quick fermentation of kitchen wastes. The bio-organic fertilizers are obtained by primary fermentation and secondary fermentation. Since primary fermentation products are partially returned to a fermentation matrix, fermentation rate is increased. According to characteristics of the kitchen wastes, yarrowia lipolytica, Saccharomyces willianus and bacillus laterosporus are selected for zymolysis of the kitchen wastes. Functional bacteria including streptomyces jingyangensis and the bacillus laterosporus are added, the streptomyces jingyangensis is capable of generating antibiotics to protect crops from pest and disease damages, and the bacillus laterosporus is resistant to high temperature, high salinity, dryness and high permeability and capable of improving soil salinity and alkalinity after being applied to soil and continuing decomposing macromolecular substances in the soil to provide nutrition for the crops, so that efficacies of the bio-organic fertilizers are improved.