Rapid disinfection method for sick soil due to eustoma grandiflorum fresh cut flower wilt

Abstract

The invention relates to a rapid disinfection method for sick soil due to eustoma grandiflorum fresh cut flower wilt. The method comprises the following steps: adding organic carbon source materials such as crop straw, grass meal and bean dregs into soil with successive cropping obstacle or attack of eustoma grandiflorum wilt, maintaining the soil to be in an anaerobic situation, lowering oxidation reduction potential of the soil to be lower than -60mV within 72 hours, maintaining the soil to be in a strong reducing environment for 2-4 weeks, and maintaining the temperature of the soil to be 25-50 DEG C, wherein a way of maintaining the soil to be in the anaerobic situation is flooding of the soil or / and film mulching, so that contact between the soil and the air is isolated, and the oxygen content of the soil is reduced. The rapid disinfection method provided by the invention has the advantages that soil-borne pathogenic bacteria, such as fusarium oxysporum, can be killed through growth and metabolism of anaerobic microorganisms in the soil, the wilt is reduced or avoided, a normal growth environment is provided for eustoma grandiflorum fresh cut flowers, and the yield is increased and stabilized; and the rapid disinfection method can achieve a strong disinfection effect within a short time, the crop straw and the like are adopted as easily degradable organic carbon source materials, sources are extensive, the materials can be easily taken, the cost is low, popularization and implementation are convenient, and application prospects are broad, so that the rapid disinfection method provided by the invention is an effective technical means for preventing wilt of eustoma grandiflorum crops.

Description

technical field [0001] The invention relates to a technique for eliminating obstacles to crop continuous cropping, in particular to a rapid disinfection method for soil diseased by fusarium wilt of fresh-cut eustoma flowers. Background technique [0002] eustoma ( Eustoma grandiflorun ) Also known as Turkey Campanulaceae, Libohua, Texas Lanling, Grassland Gentian, it is a plant of the Gentianaceae Grassland Gentiana plant, one or two annual grass flowers, native to the limestone zone between the southern United States and Mexico. Lisianthus likes warmth, humidity and sunshine, and is more cold-tolerant, not resistant to water and humidity. The optimum temperature for growth is 15-28°C, and the temperature should not be lower than 12°C at night. The response to light is more sensitive, generally 16 hours a day is the best. Strict requirements on water division, excessive water is not good for root growth; insufficient water supply during the growth period, stems and leaves...

AI Technical Summary

Problems solved by technology

At present, people mainly use planting resistant varieties and applying chemical fungicides (such as carbendazim, thiophanate-methyl, and tuzet) to prevent and control eustoma wilt, but they cannot prevent the spread of fusarium wilt

[0005] According to the applicant's planting practice, if fresh cut Eustoma flowers are continuously planted on the same land for 2-3 years, a large number of wilted diseased plants will appear. Such diseased plants are difficult to cure with pesticides, and currently there is basically no cure , leading to a 70-80% reduction in flower production that year, causing serious losses to flower farmers

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