45results about How to "Cause poison" patented technology

The invention provides a compound bird repellent containing carbosulfan, methyl ortho-aminobenzoate and benzyl acetate. The compound bird repellent is prepared by mixing the three active ingredients including the carbosulfan, the methyl ortho-aminobenzoate and the benzyl acetate in proportion, wherein the mass ratio of the carbosulfan to the methyl ortho-aminobenzoate is (2 to 1)-(1 to 20), and the mass ratio of the methyl ortho-aminobenzoate to the benzyl acetate is (1 to 1)-(1 to 2). After the compound bird repellent is used, the harm such as seedling shortage, damage to fruits and grains at the harvest time and the like caused by mass feeding of birds to the field crops, orchards and the like can be effectively avoided.

Disclosed is a highly effective and safe stalk utilizing method which includes, during the cycle of four or five years, digging longitudinal trenches in the field year by year in turn, after harvesting the rice each year, imbedding rice stalk into each two longitudinal trenches, using one of them as irrigation ditch, after harvesting wheat each year, imbedding wheat stalk into the original irrigation ditch, microbiological bacterium can be added into during imbedding the stalk.

The invention discloses a landscape garden ecological maintenance device. The landscape garden ecological maintenance device comprises a supporting frame mechanism, a power switching mechanism, a ropling mechanism and a feeding mechanism, wherein the power switching mechanism, the ropling mechanism and the feeding mechanism are arranged in the supporting frame mechanism; the power switching mechanism is located at the bottom position of the feeding mechanism, and the ropling mechanism is located at the position between the feeding mechanism and the power switching mechanism; the supporting frame mechanism comprises a fixing base, a first supporting column and a second supporting column, wherein the fixing base is used for being installed on a ship deck, and the first supporting column andthe second supporting column are fixedly arranged at the top of the fixing base; the power switching mechanism comprises an upper plate body, a lower plate body, an inclined guiding sliding rod and anadjusting sliding block, wherein the inclined guiding sliding rod is fixedly arranged between the upper plate body and the lower plate body, and the adjusting sliding block is arranged on the inclined guiding sliding rod in a sliding-fit connection mode; and a first motor is fixedly arranged at the right side end of the adjusting sliding block, and a power driving disk is connected to the right side end of the first motor in a power-fit mode. According to the landscape garden ecological maintenance device, the structure is simple, the operation is convenient, the labor amount of workers is reduced, and the throwing efficiency and the spreading efficiency are improved.

The invention discloses application of pyrogallic acid in restraining algae growth. The pyrogallic acid is a secondary metabolite naturally secreted from an aquatic plant; the pyrogallic acid or a chemosynthetic compound with a same structure can not influence other organisms in the environment. The usage method is characterized in that the pyrogallic acid is added to a water body before algae blooms erupt and exerts restraining action when algae just starts to grow so that the algae are kept at low density, so that the eruption of the blue algae water blooms of the water body is effectively prevented. The pyrogallic acid has the characteristics of safety, high efficiency, degradability and the like and can be widely applied to the nature or landscape water body.

The invention relates to a detection and analysis method for trans-2-nonenyl aldehyde potentiality in wort, which employs headspace solid phase micro-extraction and gas chromatography / mass spectrometry method, the method comprises the following steps: 1) sample pretreatment: placing wort in a headspace bottle for heat treatment; 2) ageing of a SPME extraction head: inserting the extraction head in a gas chromatography sample introduction for aging; 3) headspace solid phase micro-extraction: employing a solid phase extraction column to absorb a detected ingredient in upper space of the wort sample; 4) gas chromatography / mass spectrometry: editing a program, inserting the extraction head to an sample introduction port; vaporizing; introducing the ingredient from the sample introduction port to a capillary column for separating; and 5) detection: introducing the ingredient to be detected in a detector for detecting. A detection and analysis method of the present invention has the advantages of rapidity, less sample amount, accuracy, high sensitivity, no requirement of an extraction solvent and a derivative agent, no environmental pollution is generated, the environmental protection performance is good, and the detection and analysis method has no toxicity on testing staff body, and the security is high.