Method for preventing and controlling rice leaf blast

A leaf blast and rice technology, applied in the field of rice planting, can solve problems affecting rice yield and achieve the effect of preventing and treating leaf blast

Inactive Publication Date: 2018-02-02
广西那坡县翠株园林业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Rice blast includes seedling blast, leaf blast, knot blast, panicle blast, and grain blast. These blasts have both similarities and differences. The current control methods for rice blast are obviously designed for the common points of all rice blasts. , to achieve a certain control effect on all rice blasts, but these methods cannot achieve the best control effect on leaf blast, making leaf blast affect the yield of rice

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  • Method for preventing and controlling rice leaf blast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The mixed medicament of Daobunling EC in this example is prepared by mixing Daobunling EC, propiconazole EC, chlorothalonil and pesticide synergist at a mass ratio of 6:1:0.8:1.

[0024] A method for controlling rice leaf blast, comprising the following steps:

[0025] 1) Paddy field treatment before sowing: After the paddy field is well-arranged, sprinkle lime powder at 1kg / mu, dry the field for 3 days, then soak the paddy field with water, drain and dry the field 2 days before transplanting the rice.

[0026] 2), seed treatment: before sowing, dilute propiconazole 1500 times with mass ratio 5% alcohol and soak seeds.

[0027] 3) Prevention and control of leaf blast: In the early stage of leaf division, spray ice water at 12°C once on the rice leaves in the evening. After the dew dries up the next morning after spraying ice water, mix 125 ml / mu of Daoblastin emulsifiable concentrate with water Spray at 2000 times. If it is rainy, the rice spraying time will be delayed...

Embodiment 2

[0031] The mixed medicament of Daobunling EC in this example is prepared by mixing Daobunling EC, propiconazole EC, chlorothalonil and pesticide synergist at a mass ratio of 7:1.6:1.4:1.3.

[0032] A method for controlling rice leaf blast, comprising the following steps:

[0033] 1) Paddy field treatment before sowing: After the paddy field is well-arranged, sprinkle lime powder at 1kg / mu, dry the field for 3 days, then soak the paddy field with water, drain and dry the field 2 days before transplanting the rice.

[0034] 2), seed treatment: before sowing, dilute propiconazole 1500 times with mass ratio 5% alcohol and soak seeds.

[0035] 3) Prevention and control of leaf blast: In the early stage of leaf division, spray ice water at 15°C once on the rice leaves in the evening. After the dew dries up the next morning after spraying ice water, mix 125 ml / mu of Daoblastin emulsifiable concentrate with water Spray at 2000 times. If it is rainy, the rice spraying time will be del...

Embodiment 3

[0039] The mixed medicament of Daobunling EC in this example is prepared by mixing Daobunling EC, propiconazole EC, chlorothalonil and pesticide synergist at a mass ratio of 6.5:1.3:1.1:1.2.

[0040] A method for controlling rice leaf blast, comprising the following steps:

[0041] 1) Paddy field treatment before sowing: After the paddy field is well-arranged, sprinkle lime powder at 1kg / mu, dry the field for 3 days, then soak the paddy field with water, drain and dry the field 2 days before transplanting the rice.

[0042] 2), seed treatment: before sowing, dilute propiconazole 1500 times with mass ratio 5% alcohol and soak seeds.

[0043]3) Prevention and control of leaf blast: In the early stage of leaf division, spray ice water at 14°C once on the rice leaves in the evening. After the dew dries up the next morning after spraying ice water, mix 125 ml / mu of rice blasting emulsifiable concentrate with water Spray 2000 times. If it is rainy, the rice spraying time will be de...

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Abstract

The invention belongs to the technical field of rice planting and in particular relates to a method for preventing and controlling rice leaf blast. The method comprises the steps: soaking seeds by using propiconazole diluted by alcohol according to the characteristic of rice leaf blast, and spraying an isoprothiolane emulsifiable concentrate mixed pesticide prepared by mixing isoprothiolane, a propiconazole emulsifiable concentrate, chlorothalonil and a pesticide synergist in different periods to prevent and control rice leaf blast. By using the method, the rice leaf blast can be better prevented and controlled, and the influences of the rice leaf blast to the yield of rice are reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of rice planting, in particular to a method for preventing and treating rice leaf blast. 【Background technique】 [0002] Blast is the most harmful epidemic and catastrophic disease in rice production. The rice blast that occurs on rice leaves is called leaf blast. Leaf blast can occur throughout the growth period, and the damage is serious from tillering to jointing stage. Leaf blast is prevalent It directly affects the normal growth of rice, and in severe cases, the plant will die, resulting in reduced or even no harvest of rice. The pathogen of leaf blast mainly overwinters on rice straw and rice with conidia and mycelium. The next year, conidia are produced and spread to rice plants by wind and rain. Germination invades the host and spreads to adjacent cells, forming a central diseased plant. The conidia formed by the diseased part are spread by wind and rain to infect again. The temperature limit for...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A01G22/22A01G13/00A01C1/08A01N43/28A01N43/653A01N37/34A01N25/30A01P3/00
CPCA01C1/08A01G13/00A01N25/30A01N37/34A01N43/28A01N43/653
Inventor黄妹兰
Owner广西那坡县翠株园林业科技有限公司