Method for disinfecting soil through high-temperature greenhouse closing and ammonia fumigating

Abstract

The invention discloses a method for disinfecting soil through high-temperature shed closing and ammonia fumigating, comprising the following steps of in summer, plowing and loosening the soil which is serious in disease and needed to be disinfected, building an arched shed above the soil, covering and sealing the soil by using a transparent polyethylene plastic film to form a high-temperature environment in the shed; and placing a container filled with stronger ammonia water in the arched shed to fumigate and disinfect the soil, wherein the usage amount of the stronger ammonia water is 25kg / 240m<2>soil / time, the stronger ammonia water is replaced every two days and the continuous disinfecting time is 10-15 days. The method disclosed by the invention has the advantages that the characteristic that the permeating force and the fumigating force of ammonia can be greatly enhanced at the high temperature in summer is fully utilized and dual effects of continuous high temperature soil disinfection and continuous ammonia fumigating soil disinfection are superposed to ensure that more stable and more thorough soil disinfection effect is achieved; the ammonia can be changed into fertilizer after being absorbed by water and residual ammonia is not needed to be dispersed through widely opening and ventilating like methyl bromide to ensure that no harm or environmental pollution is produced; and therefore, the method can be popularized and applied.

Description

technical field [0001] The invention relates to a safe and efficient method for disinfecting soil by adopting the method of ammonia fumigation in a sun-dried shed. Background technique [0002] At present, the adjustment of agricultural planting structure has continuously expanded the protected cultivation area of ​​economic crops, unreasonable fertilization, multi-cropping index and continuous increase in yield, resulting in more and more serious problems of deterioration of soil physical and chemical properties and microbial flora, and the difficulty of soil planting Continuously increasing, especially the continuous cropping obstacle problem (soil-borne disease) of vegetable crops is more and more serious, and vegetable crop disease increases the weight of, and yield declines, even loses everything. The main cause of soil-borne diseases is that the continuous cropping of crops leads to the deterioration of the soil microbial flora imbalance, the beneficial microorganisms ...

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Problems solved by technology

[0006] In view of the above-mentioned prior art, in the case of methyl bromide soil fumigation has strong toxicity, high environmental risk, and the disinfection effect of the soil in the sun-dried high-temperature stuffy shed is unstable and incomplete in summer, the present invention provides a safe and efficient method using ammonia in the sun-dried stuffy shed. Method of disinfecting soil by fumigation

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