Planting method for preventing sclerotinia rot of colza

A technology for rape sclerotinia and a planting method, which is applied in the field of preventing rape sclerotinia in the planting field, can solve problems such as difficulty in preventing and controlling operations, recurrence of rape sclerotinia, and difficulty in spraying with a sprayer, thereby reducing the number of sclerotia germination, The effect of improving antibacterial sclerotinia ability and reducing field humidity

Inactive Publication Date: 2015-12-23
池州市农业技术推广中心
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, during the full-flowering stage of rapeseed, the growth is dense and the branches are staggered. It is extremely difficult to spray pesticides with a sprayer in the densely packed rapeseed field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Implementation time: September 2014 ~ May 2015

[0022] Implementation location: Group 5, Zhujia Village, Qiujiang Sub-district Office, Guichi District, Chizhou City, Anhui Province

[0023] Implementation area: 5 mu, the previous stubble of the test field is cotton

[0024] (1) Select disease-resistant improved varieties, implement salt water seed selection and chemical seed dressing. Select Fengyou 737, an excellent variety with moderate plant height, compact plant type, disease resistance, and high yield potential. Before sowing, grab the sunny day to dry the seeds for 4 hours, mix 500 grams of salt with 5 kg of water, and remove the floating grains and seeds. For sclerotium, wash the sinking seeds, then mix 5ml of 2.5% fludioxonil (Shilesh) with 30ml of water and mix 1kg of seeds, dry in the shade and then sow.

[0025] (2) Select the seedbed and disinfect it. Use loose and fertile soil, convenient drainage and irrigation, flat terrain, and dry land that has not ...

Embodiment 2

[0034] In the operation of step 3 (water-drain rotation, deep soil plowing) of Example 1, select one field to carry out deep plowing on the soil before transplanting, the depth is 25cm, select another field without deep plowing, normal operation, on March 16, 2015 in Sclerotinia sclerotiorum During the peak germination period of ascus discs, 5 points in the field were sampled and surveyed, and each point was 1 square. The results showed that the average number of ascus discs per square meter in deeply plowed fields was 1.3, while the average number of ascus discs per square meter in non-deeply plowed fields was 16.8. Buried deep in the ground, the ascus discs where the sclerotia germinate cannot grow out of the ground, greatly reducing the probability of infection.

Embodiment 3

[0036]In step 7 of Example 1 (intercultivation in spring and soil sealing), on March 16, 2015, during the peak germination period of ascus discs of Sclerotinia sclerotiorum, two rapeseed fields normally managed by farmers with more germination of ascus discs were selected. 100ml of shell mold and 30kg of water were used in one field to spray the surface and around the field ridges to seal the soil, and another field was sprayed with clear water. After 20 days, 5 points in the field were sampled and surveyed, with 1 square per point. As a result, the average number of ascus discs per square meter in the closed area of ​​the spraying area was 2.1, while the average number of ascus discs per square meter in the sprayed clear water field was 24.5. During the peak germination period, the fungus was sprayed and the soil was sealed, so that the number of ascus discs germinated by sclerotia was greatly reduced, and the probability of infection was reduced.

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PUM

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Abstract

The invention discloses a planting method for preventing sclerotinia rot of colza. The planting method is characterized by comprising the following steps: (1) selecting disease-resistant improved varieties and implementing seed sorting by salt water and seed dressing by agents; (2) selecting a seedbed and disinfecting; (3) performing paddy-upland rotation and soil deep cultivation; (4) sowing early in right time and carrying out rational close planting; (5) performing wide-line deep-furrowed cultivation, and reserving blank lines; (6) conducting scientific and reasonable fertilization; (7) performing intertillage ridging and carrying out soil sealing in spring; (8) developing prevention at critical time. The sclerotinia rot resistance of colza planted by the planting method can be remarkably improved, the yield and the quality of colza are improved, and the efficiency is improved significantly.

Description

technical field [0001] The invention mainly relates to a planting method, in particular to a planting method for preventing Sclerotinia sclerotiorum. Background technique [0002] Sclerotinia sclerotiorum, commonly known as "white stalk" disease, is one of the main diseases of rapeseed, especially in the main rapeseed planting areas in the middle and lower reaches of the Yangtze River. , The average annual production reduction is 10%~60%, which seriously affects the yield and quality of rapeseed. [0003] Rapeseed Sclerotinia sclerotiorum mainly survives summer and winter in the soil and diseased residues when harvested in the previous year, and becomes the source of primary infection. Most of the sclerotia germinate to form ascus discs when the temperature rises in March to April of the following year, and then germinate to form ascospores. After the ascospores mature, they pop out from the ascus shells and directly infect petals and leaves. silk, leading to disease on st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G13/00A01C21/00
CPCA01C21/005A01G13/00A01G22/00
Inventor 林邦宜姚卫平
Owner 池州市农业技术推广中心
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