A soil treatment method for preventing and controlling plant parasitic nematodes

A soil treatment and soil technology, applied in land preparation methods, devices for capturing or killing insects, agricultural machinery and implements, etc., can solve the problems of high toxicity and high price, reduce the amount of use, reduce the amount of application, and improve soil nitrogen fertilizer The effect of content

Active Publication Date: 2022-06-21
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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  • A soil treatment method for preventing and controlling plant parasitic nematodes
  • A soil treatment method for preventing and controlling plant parasitic nematodes
  • A soil treatment method for preventing and controlling plant parasitic nematodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, soil liquid ammonia disinfection

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

[0026] (2) Bind the steel pipe of the liquid ammonia cylinder to the trenching tool, insert the steel pipe and trenching tool into the soil 15cm deep, and open the valve to disinfect the soil with liquid ammonia. During the liquid ammonia disinfection process, the trenching tools and the steel pipe advance at a constant speed. The forward speed of disinfection is determined according to the amount of ammonia in the disinfectant, and the application amount of liquid ammonia is preferably between 10-50kg / mu. The distance between the disinfection lines is about 30cm. Laminate after disinfection. Film closed for 5-10 days.

[0027] (3) After the film is sealed for 5-10 days, it is naturally air-dried for 7-10 days a...

Embodiment 2

[0029] Embodiment 2, the influence of liquid ammonia disinfection on cucumber planting

[0030] The root-knot nematode disease was selected seriously, and the effect evaluation of the facility soil used for cucumber planting was carried out. The experiment set up 5 treatments: control (CK); liquid ammonia 10kg / mu disinfection; liquid ammonia 25kg / mu disinfection; liquid ammonia 50kg / mu disinfection; Fuqi Duo disinfection (Fu Qi Duo was applied during transplanting, 2g Fu Qi Duo / tree, The treatments were the same as the control before transplanting). After soil treatment was completed, cucumber seedlings (Jinyou 35) were transplanted and routinely managed. During the whole process, different treatments were carried out according to the final amount of nitrogen, phosphorus and potassium.

[0031] The number of root-knot nematodes (second instar larvae J2) and the number of culturable microorganisms (bacteria, fungi and actinomycetes) in the soil were detected 7-10 days after s...

Embodiment 3

[0047] Embodiment 3, the influence of liquid ammonia disinfection on tomato planting

[0048] The root-knot nematode disease was selected, and the facility soil used for tomato planting was evaluated. The experiment set up 5 treatments: control (CK); liquid ammonia 10kg / mu disinfection; liquid ammonia 25kg / mu disinfection; liquid ammonia 50kg / mu disinfection; Fuqi Duo disinfection (Fu Qi Duo was applied during transplanting, 2g Fu Qi Duo / tree, The treatments were the same as the control before transplanting). After the soil treatment was completed, tomato seedlings (hard powder No. 8) were transplanted and routinely managed. During the whole process, different treatments were carried out according to the final 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.

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Abstract

The invention discloses a soil treatment method for preventing and controlling plant parasitic nematodes. The method is to utilize liquid ammonia to disinfect the inside of the soil, comprising the steps of: 1) plowing the soil of facilities with serious parasitic nematode diseases to a depth of not less than 20 cm, and performing liquid ammonia disinfection treatment when the soil moisture content is below 30%. ; 2) The soil after the disinfection treatment is covered with film, (3) After the film-covered treatment is finished, it is naturally dried for 7-10 days after the film is removed, and the crops are planted after fertilizing and making a border, and conventional field management is carried out. Compared with other chemical disinfection methods, the method is safer, cheaper, non-toxic, non-residual, and has no environmental risk. At the same time, liquid ammonia disinfection can reduce the application of other nitrogen fertilizers and increase the nitrogen content of the soil; at the same time, it can reduce the use of other chemicals and achieve the double effect of weight loss and drug reduction.

Description

technical field [0001] The invention belongs to the technical field of agricultural intensive production, and particularly 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 Heteroderma, and is an important soil-borne pathogen. It is estimated that plant-parasitic nematodes cause direct economic losses to world agricultural production as high as $100 billion annually. It is reported that about 50% of greenhouse vegetables in China suffer from root-knot nematode damage to varying degrees, and the annual economic loss is as high as 400 million US dollars. [0003] At present, the control of root-knot nematodes mainly relies on the treatment of soil with highly toxic chemicals. Although it can temporarily delay the disease, the problem of pesticide residues is prominent, the quality of vegetables is degraded, and the environment is seriously pollut...

Claims

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Application Information

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Patent Type & Authority Patents(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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