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Soil treatment method for preventing and controlling plant parasitic nematodes

A soil treatment and soil technology, applied in land preparation methods, devices for trapping or killing insects, agricultural machinery and implements, etc., can solve the problems of high price and high toxicity, reduce the amount of use, reduce the amount of application, and have no environmental risks Effect

Active Publication Date: 2019-09-06
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing technical problems, the invention provides a liquid ammonia soil disinfection method for preventing and controlling plant parasitic nematodes, which solves the problems caused by conventional soil disinfectants to the environment and food safety, and the high toxicity and high price problem, it has the double effect of weight loss and drug reduction in facility agriculture

Method used

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  • Soil treatment method for preventing and controlling plant parasitic nematodes
  • Soil treatment method for preventing and controlling plant parasitic nematodes
  • Soil treatment method for preventing and controlling plant parasitic nematodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one, soil liquid ammonia disinfection

[0025] (1) Plow the soil of facilities with serious root-knot nematode disease to a depth of 25 cm, and when the soil moisture content is below 30%, perform liquid ammonia disinfection treatment.

[0026] (2) The steel pipe of the liquid ammonia cylinder and the ditching tool are bound together, the steel pipe and the ditching tool are inserted into the soil to a depth of 15 cm, and the valve is opened to disinfect the soil with liquid ammonia. During the liquid ammonia disinfection process, the ditching tool and the steel pipe move forward at a constant speed. The forward speed of disinfection is determined according to the amount of disinfectant ammonia, and the application amount of liquid ammonia is preferably between 10-50kg / mu. The distance between disinfection rows is about 30cm. After disinfection, carry out coating treatment. Membrane closed for 5-10 days.

[0027] (3) After sealing the film for 5-10 days, ...

Embodiment 2

[0029] Embodiment two, the influence of liquid ammonia disinfection on cucumber planting

[0030] Select the soil with severe root-knot nematode disease, and evaluate the effect of the facility soil used for cucumber planting. There are 5 treatments in the experiment: control (CK); 10kg / mu of liquid ammonia for disinfection; 25kg / mu of liquid ammonia for disinfection; The treatment before transplanting was the same as that of the control). After the soil treatment was completed, the cucumber seedlings (Jinyou 35) were transplanted and routinely managed. During the whole process, different treatments were carried out according to the final equal amount of nitrogen, phosphorus and potassium.

[0031] Carry out the detection of root-knot nematode (second instar larvae J2) quantity and cultivable microorganism (bacterium, fungus and actinomycetes) quantity in the soil after soil disinfection and film removal (all treatments are covered with film) 7-10 days respectively; Harvest...

Embodiment 3

[0047] Embodiment three, the influence of liquid ammonia disinfection on tomato cultivation

[0048] The root-knot nematode disease occurrence was selected, and the effect evaluation was carried out on the facility soil used for tomato planting. There are 5 treatments in the experiment: control (CK); 10kg / mu of liquid ammonia for disinfection; 25kg / mu of liquid ammonia for disinfection; The treatment before transplanting was the same as that of the control). After the soil treatment was completed, the tomato seedlings (Kufen No. 8) were transplanted and routinely managed. During the whole process, different treatments were carried out according to the final equal amount of nitrogen, phosphorus and potassium. The number of root-knot nematodes (J2) before soil treatment was 276 / 100g soil.

[0049] Other experimental methods, experimental schemes, and detection indicators are the same as "Example 2" unless otherwise specified.

[0050] Table 3 The number of different microorg...

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Abstract

The invention discloses a soil treatment method for preventing and controlling plant parasitic nematodes. According to the method, the inside of soil is disinfected by the aid of liquid ammonia. The method includes the steps: 1) plowing greenhouse soil with serious parasitic nematode diseases to reach the depth no less than 20cm, and disinfecting the soil by the aid of liquid ammonia when water content of the soil is 30% or less; 2) covering the disinfected soil with films; 3) natural drying the soil for 7-10 days after the films are film uncovered after film covering is completed, planting crops after fertilizer applying and ridging are implemented, and performing conventional field management. Compared with other chemical disinfection methods, the method is safer, cheaper and free from toxicity, residue and environmental risk. The application amount of other nitrogen fertilizers can be reduced by the aid of disinfection of the liquid ammonia, the content of the nitrogen fertilizers in the soil is improved, the usage amount of other insecticides is reduced, and double effects of decreasing fertilizers and insecticides are achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural intensive production, and in particular relates to a soil treatment method for preventing and controlling plant parasitic nematodes. Background technique [0002] Root-knot nematode (Meloidogyne spp.) belongs to the genus Meloidogyne spp. and is an important class of soil-borne pathogens. It is estimated that plant parasitic nematodes cause direct economic losses of up to 100 billion US dollars to the world's agricultural production every year. It is reported that about 50% of the greenhouse vegetables in China have different degrees of root-knot nematode damage, and the annual economic loss is as high as 400 million US dollars. [0003] At present, the prevention and control of root-knot nematode mainly relies on the treatment of soil with highly toxic chemicals. Although it can temporarily delay the disease, the problem of pesticide residues is serious, the quality of vegetables is degrade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01M17/00A01B79/02
CPCA01M17/002A01B79/02
Inventor 刘建斌左强张殿朋王伟武凤霞邢礼军
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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