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Method for preventing damping off of cypresses

A technology for blight and cypress, which is applied to the field of prevention and control of blight of cypress, can solve problems such as poor control effect, and achieve the effects of improving control effect, reducing morbidity rate and saving cost.

Inactive Publication Date: 2015-03-25
SUZHOU XINGANG AGRI SCI & TECH PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are three main control methods for cypress tree blight in China: physical control, chemical control and biological control. Each of the three methods has its own merits, but the control effect of these three methods is not very good when used alone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A control method for cypress blight, comprising the following steps:

[0023] (1) planting place selection: the selection front stubble is the raising of seedlings in the raised bed nursery ground of cypress seedlings, and the height of the raised bed nursery ground is 30cm, and the width is 80cm;

[0024] (2) Soil selection and treatment: choose a soil with a pH value of 7 and a salt content below 0.4g / kg to plant cypress trees, and apply 100t / hm of organic fertilizer on the soil 2 9 days before sowing, spray the soil with a formalin solution with a concentration of 3.5%, and the spraying density is 55ml / m 2 , cover the soil with mulch after spraying, and remove the mulch before sowing;

[0025] (3) Sowing: Sowing is carried out when the daytime average temperature is 15°C. The sowing adopts the method of drill sowing. The width of the banner is 11cm, and the depth of the ditch is 7cm. After sowing, the soil surface is covered with a layer of sand with a thickness of ...

Embodiment 2

[0028] A control method for cypress blight, comprising the following steps:

[0029] (1) planting place selection: the selection front stubble is the raising of seedlings in the raised bed nursery ground of cypress seedlings, and the height of the raised bed nursery ground is 30cm, and the width is 80cm;

[0030] (2) Soil selection and treatment: choose a soil with a pH value of 7 and a salt content below 0.4g / kg to plant cypress trees, and apply 100t / hm of organic fertilizer on the soil 2 9 days before sowing, spray the soil with a formalin solution with a concentration of 3.5%, and the spraying density is 55ml / m 2 , cover the soil with mulch after spraying, and remove the mulch before sowing;

[0031] (3) Sowing: Sowing is carried out when the daytime average temperature is 15°C. The sowing adopts the method of drill sowing. The width of the banner is 15cm, and the depth of the ditch is 10cm. After sowing, the soil surface is covered with a layer of sand with a thickness of...

Embodiment 3

[0034] A control method for cypress blight, comprising the following steps:

[0035] (1) planting place selection: the selection front stubble is the raising of seedlings in the raised bed nursery ground of cypress seedlings, and the height of the raised bed nursery ground is 30cm, and the width is 80cm;

[0036] (2) Soil selection and treatment: choose a soil with a pH value of 7 and a salt content below 0.4g / kg to plant cypress trees, and apply 100t / hm of organic fertilizer on the soil 2 9 days before sowing, spray the soil with a formalin solution with a concentration of 3.5%, and the spraying density is 55ml / m 2 , cover the soil with mulch after spraying, and remove the mulch before sowing;

[0037] (3) Sowing: Sowing is carried out when the daytime average temperature is 15°C. The sowing adopts the method of drill sowing. The width of the banner is 13cm, and the depth of the ditch is 8cm. After sowing, the soil surface is covered with a layer of sand with a thickness of ...

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Abstract

The invention provides a method for preventing damping off of cypresses. The method comprises the following steps that (1) a planting site is selected, wherein a high-bed seedling culturing site with cypress seedlings as previous crops is selected for culturing seedlings, the height of the high-bed seedling culturing site is 30 cm, and the width of the high-bed seedling culturing site is 80 cm; (2) soil is selected and processed, wherein the soil with the ph value being 7 and the salt content being 0.4 g / kg or lower is selected for planting the cypresses, organic fertilizer is additionally applied to the soil at 100 t / hm<2>, disinfectants are sprayed on the soil nine days before sowing, the soil is covered with capping mass after spraying is finished, and the capping mass is removed before sowing; (3) sowing is conducted, wherein sowing is conducted when the average day temperature is 15 degrees, a strip cropping mode is adopted for sowing, the surface of the sowed soil is covered with a sand layer with the thickness of 0.5 cm, the sand layer is covered with a mulching film, and the mulching film is tore off after the seedlings are neatly emerged; (4) chemical prevention is conducted, wherein the seedlings of the cypresses are irrigated with insect-resisting agents for prevention ahead of time. The method is good in prevention effect.

Description

Technical field: [0001] The invention relates to a method for preventing and treating cypress blight. Background technique: [0002] Blight, also known as "dead seedlings", is mainly caused by the infection of Rhizoctonia solani Kuhn (scientific name Rhizoctonia solani Kuhn, English name Sheath Blight). Dried blight hosts are widely distributed, and cypress is one of them. The morbidity symptom of cypress blight is mainly manifested in two forms: (1) stem and leaf rot: the main stem leaves and epidermis of cypress seedlings rot and fall off, and after a period of time, cypress cannot absorb sufficient nutrients and slowly die; (2) Root rot: The roots of cypress seedlings gradually rot, causing the cypress to be unable to absorb the water and nutrients in the soil and eventually die. At present, the control methods for cypress tree blight in China mainly include physical control, chemical control and biological control. The three methods have their own advantages and disadv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G7/00
CPCA01G17/005A01B79/02A01G13/00A01G13/0275
Inventor 陶建平
Owner SUZHOU XINGANG AGRI SCI & TECH PARK
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