49results about How to "Protect ecological security" patented technology

The invention provides a pesticide nanocapsule, and a preparation method thereof. The pesticide nanocapsule is prepared from, by weight, 0.1 to 80 parts of a pesticide active component, 0.1 to 40 parts of a capsule wall material, 0.2 to 30 parts of an emulsification dispersant, 10 to 200 parts of an organic solvent, 20 to 350 parts of water, 0.1 to 200 parts of an excipient, and 0 to 20 parts of an assistant agent, wherein the ratio of the pesticide active component to the capsule wall material is controlled to be 0.1:1-10:1. The pesticide nanocapsule is small in particle size, excellent in particle dispersibility and slow release performance; the preparation method is simple; operation is convenient; and the repeatability is high.

The invention provides a preparation method of a pesticide nanocapsule. The method comprises the following steps: emulsifying a component of the pesticide nanocapsule to form primary emulsion, then homogenizing the primary emulsion at high temperature to form fine emulsion, thus preparing the pesticide nanocapsule. The preparation method of the pesticide nanocapsule, which is provided by the invention, is simple, easy to operate and high in repetitiveness; the prepared pesticide nanocapsule has a small particle size, is high in particle dispersity and high in slow release performance.

The invention provides a method for monitoring moderate degradation of alpine meadows in Qinghai-Tibet Plateau by using soil animals. The method is characterized in that the moderate recession of thealpine meadow is monitored by analyzing the density of soil animals such as Diopoda soil animals with Polydesmoidea (Paradoxosomatidae) and Doratodesmidae soil animals in the soil animals. The evaluation method provided by the invention is simple, practical and relatively low in cost; the moderate degradation stage of the alpine meadow can be rapidly and efficiently evaluated; and the detection result can reflect the comprehensive degradation condition of environments such as grassland plant communities and soil. In addition, while traditional methods such as plant communities and soil or modern technologies such as remote sensing are used for judging the alpine meadow degradation stage, the method can also be combined for use, so that the result accuracy can be improved.

The invention provides a nano pesticide preparation and a production method of same. The nano pesticide preparation is prepared from, by weight, 0.1-40 parts of a pesticide active component, 0.1-40 parts of a capsule wall material, 0.2-30 parts of an emulsion dispersant, 10-300 parts of an organic solvent, 20-500 parts of water, 0.1-400 parts of an excipient, and 0-20 parts of an additive, wherein the ratio of the pesticide active component to the capsule wall material is 0.1:1-10:1. The nano pesticide preparation has small particle size, good particle dispersibility, excellent sustained release performance and simple production method, is easy to use and has good repeatability.

The invention relates to a pest capturing device, in particular to a portable pest capturing device which is combined with a main working cabin and a pest-storing net cabin, etc., which are made from materials such as PVC and arranged with matching negative pressure suction. The device is used for capturing flies, mosquitoes, deerflies and cabbage caterpillars. The device can replace toxic chemical spraying agent such as dichlorvos and dimethoate for killing pests and is applicable to families in urban or suburban areas, guesthouses, restaurants, hotels, hostels, eateries, offices, airplanes, trains, vehicles, ships, dormitories, farms, urban and suburban refuse dumps, environmental hygiene organizations and farmlands all over the world for protecting vegetables, fruits and foodstuff from being contaminated by pesticide residues; the device can effectively capture the pests that harm human beings by spreading cholera, typhoid and destroy farm plants with a speed of capturing 80 to 300 pests per minute, and then distributes the living pests without the chemical contamination of the pesticides to livestock farms for breeding chickens, ducks and fishes as high protein feedstuff so as to realize the aim of stopping general environment pollution, turning harm to benefit and protecting the health of human beings.

The chelating state micronutrient fertilizer with the insecticidal function comprises trace elements and chelating agents and also comprises botanical pesticides and dispersion agents; the chelating state micronutrient fertilizer is shaped like powder; chelating agents are selected from tetrasodium iminodisuccinate salt and or EDTA (Ethylene Diamine Tetraacetic Acid); the botanical pesticides comprise Cynanchum komarovii Al. extracts and also comprise Stellera chamaejasme extracts and Ageratina adenophora extracts. According to the chelating state micronutrient fertilizer with the insecticidal function, the trace elements are added, trace elements and other nutrients brought by a plant source which serves as the pesticides are contained, the trace elements and the other nutrients can be chelated into the chelating state micronutrient fertilizer, the botanical pesticides are also contained, and accordingly the formula is reasonable, the synergistic effect is obvious, the utilization rate of effective components is high, the pest killing effect is good through due to the double insecticidal mechanism for damaging protective enzyme systems and nervous systems of nematodes and the fumigation action of multiple ingredients, and the botanical pesticides are free of pest resistance. The invention also relates to a production method of the chelating state micronutrient fertilizer with the insecticidal function.

The invention relates to a release method, a release casing, a release body and a release device of forest pest natural enemies. The release method comprises the following steps: utilizing the following release casing or thin paper strip containing intermediate hosts of the pest natural enemy and the second generation of bred natural enemies as the release body, and sprinkling on forest, lawn or field subjected from pest harm: I. thin paper casing or thin plastic film casing which is made of light materials and provided with through holes; II. the thin paper strip felted with the intermediatehosts of the pest natural enemy and the second generation of bred natural enemies; III. the release casing or the plastic film strip felted with the release casing made of the light materials; IV. therelease body formed from felting the release casing to a muricated thin belt. The release casing is a thin casing which is made of the light material and provided with through holes, and the light material thin casing can be felted together with the thin paper strip and the muricated thin belt. The release device is a box body provided with a valve, and the box body is provided with a cover on the upside and a hole on the downside. When the release method, the release casing, the release body and the release device are adopted, the release efficiency is high, and the natural enemies can be released in a large acreage.

The invention discloses a method for estimating the ammonia nitrogen content of reservoir water based on hyperspectral data. An estimation model is established according to the wavelength derivative of spectral reflectance and the measured ammonia nitrogen content of a water sample, and is used to estimate the ammonia nitrogen content in order to obtain a high-precision estimation result. The method facilitates the deepening of the understanding of the environmental problems of the eucalyptuses in a reservoir area, and provides scientific and technological support and decision-making basis for the protection of ecological security of water and the sustainable development of water.

The invention discloses a filter element with double filter layers and application thereof. The filter element comprises an outer filter layer, an inner filter layer, a non-woven filter and protection layer, a water outlet cavity, round end covers at both ends and leakage-proof washers at both ends, wherein the inner filter layer is wrapped with the non-woven filter and protection layer to prevent granular active carbon filtering material from leaking; and both ends of the filter element are provided with two round end covers and two leakage-proof washers. The invention has the advantages that the assimilative capacity of the outer filter layer is enhanced, and the inner filter layer is effectively protected; the filter service life is prolonged by multiple times; the filter element has special effect on the deep purification of mineral water and drinking tap water and meets the demands for health drinking water of wide families, offices, schools and dining halls; and all materials and parts of the filter element can be recycled.

The invention discloses a dsRNA of a wing development related gene optomotor-blind and an application thereof in pest control. Primers are designed for the optomotor blind of wing development of citrus fruit fly and dsRNA is synthesized for the first time, and RNAi is carried out on the optomotor blind gene of citrus fruit fly by applying a feeding method, so that deformed phenotype of the wing development is obtained on the premise of ensuring interference efficiency. The dsRNA not only solves the problem that injection and introduction of dsRNA are hard to operate in the field, thereby laying a foundation for controlling and preventing citrus fruit fly by directly spraying an RNA preparation for future research, and also achieving good economical and social benefits in effective prevention of invasion and diffusion of the citrus fruit flies , protection of agricultural production and ecological safety of china and human health.

The invention discloses a specific primer pair for identifying tangerine fruit flies and citrus fruit flies and an application thereof. The invention designs a specific primer pair for identifying thetangerine fruit flies and the citrus fruit flies, and develops a molecular identification technology based on conventional PCR. Experiments prove that the molecular identification technology based onthe conventional PCR can achieve the species identification of the tangerine fruit flies and the citrus fruit flies, and has the advantages of strong specificity, high sensitivity, low cost, simple operation and short time consumption. The primer pair not only solves the problem of identifying the species of non-adult fruit flies and residues of the adult fruit flies, but also provides a practical technology and a theoretical basis for monitoring the epidemic situation of the tangerine fruit flies and citrus fruit flies, distributing and invading of the tangerine fruit flies and the citrus fruit flies in main production areas of China, and subsequent plant quarantine and field management. The primer pair is of great significance to effectively prevent further invasion and diffusion of thetangerine fruit flies and citrus fruit flies, protect agricultural production and ecological security, and promote the development of economic and trade in China.

The invention provides a method for detecting dendroctonus pseudotsugae. The aim of identifying dendroctonus pseudotsugae can be achieved by combining specific primers (HS-F and HS-R) and a probe (HS-P) which are screened by a test in a Taq-Man real-time fluorescent quantitative PCR (Polymerase Chain Reaction) method. The detection method is suitable for quarantine identification of dendroctonus in different states, the defects of a conventional morphological identification method are overcome, and compared with a DNA bar code identification technology applied in the prior art, the primers and the MGB probe are high in specificity and sensitivity, simple in experimental operation and short in consumed time; the identification result is visual and can be obtained by observing an amplification curve; and the research not only can meet the original rapid customs clearance requirement of entry and exit, improve the detection rate, but also can effectively prevent invasion and diffusion of dangerous dendroctonus, and has important significance on protection of agriculture and forestry production and ecological safety in China.

The invention discloses a reservoir water body total nitrogen content estimation method based on an optimized derivative calculation method, wherein an estimation model is established according to the spectral reflectivity wavelength derivative and water body sample measured total nitrogen content, then total nitrogen content is estimated according to the estimation model, the estimation result is quickly obtained, and knowledge of the environmental problems of eucalyptuses in the reservoir area is deepened. The spectral reflectivity wavelength derivative is calculated by an optimized method which has higher precision than traditional derivative calculation method; and scientific support and decision basis are provided for protecting ecological safety and sustainable development of water quality.

A corn stalk feed production method relates to a method for harvesting high-quality corn stalk feed, which obtains the high-quality corn stalk feed without decreasing the corn grain yield and even in the case of increasing the production yield. The invention solves the problem of forage shortage. The method comprises the following steps: in the stage of wax ripeness (within 40 days) of the corn growth and development, the top end of the plant is cut off at a 2-3mm distance from the leaf ring of the upper leaf (or two leaves) above the ear leaf and/or the corn leaves below the ear leaf (or the lower leaf below the ear leaf) are removed to serve as the corn stalk feed. In the invention, the crude protein content of the straw reaches 5%-9%, and the yield is up to 1.42-2.23 t/ha. The method has simple process and low investment, which is easy to grasp and promote; therefore, the invention provides a new approach for farmland management and healthy grassland maintenance, which alleviates the conflict between grass and livestock and provides a high-quality feed resource for the livestock production.

The invention discloses an aphid high lethal gene and application thereof in aphid prevention and control, and belongs to the field of agricultural pest prevention and control. The invention discloses application of Synapsin or a substance for regulating and controlling the expression of a Synapsin coding gene or a substance for regulating and controlling the activity or content of the Synapsin in regulating and controlling the survival rate of aphids. The Synapsin is a protein with an amino acid sequence shown as a sequence 4 in a sequence table. The invention also provides a preparation for preventing and treating aphids. The preparation contains double-stranded RNA (Ribonucleic Acid) which is Agsyn dsRNA-1 or/and Agsyn dsRNA-2. RNAi application is carried out on aphis gossypii nerve synapse conduction related genes by applying a body wall dropwise addition method, a phenotype with a high fatality rate is obtained on the premise of ensuring interference efficiency, and the fatality rate of dsRNA is improved by applying a nano-carrier.