A cultivation method for preventing and treating the tip-burning of summer flower bracts of a gladiolus

Abstract

A kind of cultivation method for preventing and treating the tip-burning of summer flower bracts of Amaryllis, wherein when the flower sword of Amaryllis is about 14-18 cm long, the whole plant is sprayed with mixed agent I of nano-kaolin, nano-montmorillonite and polyalkylene modified heptamethyltrisiloxane, and after 3-4 days, the whole plant is sprayed with mixed agent II of 25% double acylic acid amide, 5% emamectin benzoate and kaolin; one day before harvesting, the whole plant is sprayed with mixed agent III of 25% double acylic acid amide, 5% emamectin benzoate and polyalkylene modified heptamethyltrisiloxane.The present application improves the resistance of flower bracts of Amaryllis to high temperature and strong light, reduces the occurrence of tip-burning of flower bracts, and improves the quality of cut flowers of Amaryllis in summer cultivation.

Description

Technical Field

[0001] This invention relates to the field of gladiolus cultivation technology, and in particular to a cultivation method for preventing and controlling tip burn of gladiolus flower bracts in summer. Background Technology

[0002] Gladiolus boasts a rich variety of colors, elegant blooms, and long flower stalks, combining Eastern grace with Western lines, making it a beloved flower worldwide and one of the world's four major cut flowers. It has long enjoyed a large cultivation area in my country. Currently, gladiolus can be produced year-round. However, in some major producing areas of my country, during summer outdoor cultivation, temperatures exceeding its optimal growing temperature cause bract burn during flower bud development, significantly reducing the quality of gladiolus cut flowers.

[0003] In existing technologies, the common solutions to the problem of tip burn are to use shade nets for shading; or to spread straw in the field and then spray water to maintain field humidity; or to apply fertilizer, mainly calcium fertilizer.

[0004] Shade nets require frames to be erected, which is relatively expensive. Spreading straw in the field for watering requires the installation of spray systems, which also incurs costs. Applying calcium fertilizer can improve plant resistance to adverse conditions, and it has some effect, but the effect is not particularly significant. Summary of the Invention

[0005] The technical problem to be solved by this invention is to address the shortcomings of existing technologies by proposing a cultivation method for preventing bract scorching in gladiolus during the summer, thereby improving the resistance of gladiolus bracts to high temperatures and strong sunlight, reducing the occurrence of bract scorching, and improving the quality of gladiolus cut flowers cultivated in summer.

[0006] The technical problem to be solved by this invention is achieved through the following technical solution: a cultivation method for preventing summer bract scorching of gladiolus, characterized by the following:

[0007] When the gladiolus flower spike emerges from the leaf axil to about 14-18cm, spray the entire plant with Mixed Agent I at a rate of 15-20L per acre. Mixed Agent I is a mixed aqueous solution of nano-kaolin, nano-montmorillonite, and polyalkylene-modified heptamethyltrisiloxane, wherein the content of nano-kaolin is 2-4g / L, the content of nano-montmorillonite is 2-4g / L, and the content of polyalkylene-modified heptamethyltrisiloxane is 5-10ml / L.

[0008] Three to four days after spraying mixed agent I, spray the whole plant with mixed agent II at a rate of 15-20 L per acre. Mixed agent II is a mixed aqueous solution of 25% dimethomorph, 5% abamectin, and kaolin, wherein the content of 25% dimethomorph is 0.5-1 mL / L, the content of 5% abamectin is 0.5-1 mL / L, and the content of kaolin is 2-4 g / L.

[0009] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: One day before harvest, spray the whole plant with mixed agent III at a rate of 15-20L per acre. The mixed agent III is a mixed aqueous solution of 25% dimethomorph, 5% emamectin benzoate and polyalkylene-modified heptamethyltrisiloxane, wherein the content of 25% dimethomorph is 0.5-1mL / L, the content of 5% emamectin benzoate is 0.5-1mL / L, and the content of polyalkylene-modified heptamethyltrisiloxane is 5-10mL / L.

[0010] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: when the first flower bud at the base has fully expanded and shown color, the harvesting begins. After harvesting, the flower bud is placed in a cool place and treated with a pretreatment solution within 1 hour.

[0011] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: the formula of the pretreatment solution is a mixed aqueous solution of 150g / L-2000g / L sucrose, 200mg / L-300mg / L 8-hydroxyquinoline, 50mg / L-100mg / L silver nitrate and 50mg / L-100mg / L aluminum sulfate.

[0012] Compared with existing technologies, this invention can form a coating on the surface of gladiolus leaves and bracts during the development of gladiolus flower buds by spraying with nano-kaolin, nano-montmorillonite, and polyalkylene-modified heptamethyltrisiloxane. This coating maintains a certain level of leaf surface humidity, effectively reflecting strong sunlight while reducing stomatal opening and closing, decreasing water evaporation, and preventing bract tip burn. A second spray utilizes kaolin to adhere to diacetylaminopropionate and abamectin, extending the duration of protection against fungal diseases, cabbage caterpillars, and thrips, and preventing the risk of fungal infection after leaf burn on some bracts. Before harvest, a pre-formulated solution is sprayed to clean the kaolin and montmorillonite powder from the plant surface, improving the brightness of cut flower leaves while also killing bacteria and preventing insects. This invention improves the resistance of gladiolus flower buds to high temperatures and strong sunlight through cultivation techniques, reduces bract tip burn, and enhances the quality of gladiolus cut flowers cultivated in summer. Detailed Implementation

[0013] The specific technical solutions of the present invention are further described below. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, and to facilitate a better understanding of the present invention by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments, and do not constitute a limitation on its rights. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0014] A cultivation method for preventing summer bract scorching in gladiolus.

[0015] The fields are made into raised beds with a width of 1.1m to 1.2m, a ditch width of 0.3m to 0.4m, and a bed height of 0.25m to 0.3m.

[0016] Select gladiolus bulbs with a circumference of 10cm and sow them in raised beds from March to July. Dig planting furrows 13cm deep, and cover the top of the bulbs with 7-10cm of soil. Sow per 667m² 2 The number of bulbs sown is 12,000 to 14,000.

[0017] Water thoroughly once immediately after planting. Watering should be done in the morning. Except for the seedling stage and after flowering, when the plant reaches a height of 20cm, keep the soil moist during the growing season.

[0018] Before seedlings emerge, cover them with a layer of wheat straw, 2-3 cm thick, and at the same time apply metaldehyde granules at a rate of 400g-600g per acre.

[0019] When the gladiolus flower spike emerges from the leaf axil to about 14-18cm, spray the entire plant with Mixed Agent I at a rate of 15-20L per acre. Mixed Agent I is a mixed aqueous solution of nano-kaolin, nano-montmorillonite, and polyalkylene-modified heptamethyltrisiloxane, wherein the content of nano-kaolin is 2-4g / L, the content of nano-montmorillonite is 2-4g / L, and the content of polyalkylene-modified heptamethyltrisiloxane is 5-10ml / L.

[0020] Three to four days after spraying mixed agent I, spray the whole plant with mixed agent II at a rate of 15-20 L per acre. Mixed agent II is a mixed aqueous solution of 25% dimethomorph, 5% abamectin, and kaolin, wherein the content of 25% dimethomorph is 0.5-1 mL / L, the content of 5% abamectin is 0.5-1 mL / L, and the content of kaolin is 2-4 g / L.

[0021] One day before harvest, spray the whole plant with Mixed Agent III at a rate of 15-20L per acre. Mixed Agent III is a mixed aqueous solution of 25% dimethomorph, 5% emamectin benzoate, and polyalkylene-modified heptamethyltrisiloxane, wherein the content of 25% dimethomorph is 0.5-1mL / L, the content of 5% emamectin benzoate is 0.5-1mL / L, and the content of polyalkylene-modified heptamethyltrisiloxane is 5-10mL / L.

[0022] Harvest when the first bud at the base has fully expanded and shown color. After harvesting, place the bud in a cool place and treat it with a pretreatment solution within 1 hour.

[0023] The pretreatment solution is formulated as follows: a mixed aqueous solution of 150 g / L-2000 g / L sucrose, 200 mg / L-300 mg / L 8-hydroxyquinoline, 50 mg / L-100 mg / L silver nitrate and 50 mg / L-100 mg / L aluminum sulfate.

[0024] Detailed experimental records:

[0025] Experiments using different concentrations of kaolin and montmorillonite formulations revealed that the incidence of tip burn on gladiolus flower bracts was lowest at 3.2% when the whole plant was sprayed with a mixed solution of nano-kaolin (2-4 g / L) and nano-montmorillonite (2-4 g / L). Scanning electron microscopy also showed that after spraying the mixed solution, kaolin and montmorillonite formed a sheet-like coating on the surface of the flower bracts.

[0026] Experiments on formulations of kaolin and montmorillonite with different concentrations:

[0027] .

[0028] The table above shows that spraying an agent containing kaolin and montmorillonite can significantly improve the tip burn phenomenon of gladiolus flower bracts.

Claims

1. A cultivation method for preventing the tip-burning of summer flower buds of Amaryllis, characterized in that: when the flower sword of Amaryllis is 14-18 cm long, the whole plant is sprayed with mixed agent I, 15-20 L per mu, the mixed agent I is a mixed aqueous solution of nano-kaolin, nano-montmorillonite and polyalkylene modified heptamethyltrisiloxane, wherein the content of nano-kaolin is 2-4 g / L, the content of nano-montmorillonite is 2-4 g / L, and the content of polyalkylene modified heptamethyltrisiloxane is 5-10 ml / L; 3-4 days after spraying mixed agent I, the whole plant is sprayed with mixed agent II, 15-20 L per mu, the mixed agent II is a mixed aqueous solution of 25% double acylalanine, 5% emamectin benzoate and kaolin, wherein the content of 25% double acylalanine is 0.5 mL~1 mL / L, the content of 5% emamectin benzoate is 0.5~1 mL / L, and the content of kaolin is 2-4 g / L; one day before harvesting, the whole plant is sprayed with mixed agent III, 15-20 L per mu, the mixed agent III is a mixed aqueous solution of 25% double acylalanine, 5% emamectin benzoate and polyalkylene modified heptamethyltrisiloxane, wherein the content of 25% double acylalanine is 0.5 mL~1 mL / L, the content of 5% emamectin benzoate is 0.5~1 mL / L, and the content of polyalkylene modified heptamethyltrisiloxane is 5-10 ml / L. The harvesting starts when the first flower bud at the base is fully expanded and transparent, and after harvesting, it is placed in a cool place and treated with a pretreatment liquid within 1 hour. The formula of the pretreatment liquid is: a mixed aqueous solution of 150 g / L-2000 g / L sucrose, 200 mg / L-300 mg / L 8-hydroxyquinoline, 50 mg / L-100 mg / L silver nitrate and 50 mg / L-100 mg / L aluminum sulfate. ​ 2. The cultivation method for preventing the summer spathe tip burn of the A. regeneri according to claim 1, characterized by: ​ 3. The cultivation method for preventing the summer spathe tip burn of the gladiolus according to claim 2, characterized by: ​