Method for raising disease resistance of paddy rice to rice blast by utilization of alginooligosaccharide

A technology of alginic acid oligosaccharides and sodium alginate oligosaccharides, applied in botany equipment and methods, chemicals for biological control, applications, etc., can solve problems such as drug residues and ecological environment pollution, and achieve growth promotion, The method is simple and easy, and the effect of improving the activity of defense enzymes

Inactive Publication Date: 2018-11-16
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in recent years, the frequent and indiscriminate application of chemical pesticides has caused serious environmental pollution and drug residues, and there is an urgent need to develop non-polluting and biodegradable biopesticides.

Method used

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  • Method for raising disease resistance of paddy rice to rice blast by utilization of alginooligosaccharide
  • Method for raising disease resistance of paddy rice to rice blast by utilization of alginooligosaccharide
  • Method for raising disease resistance of paddy rice to rice blast by utilization of alginooligosaccharide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Sodium alginate oligosaccharide preparation: Take 1 kg of sodium alginate, dissolve it in 100 liters of water, add 10 liters of 30% hydrogen peroxide, react at 80°C for 90 minutes, freeze-dry for 48 hours, and grind into powder .

[0027] (2) Preparation of sodium alginate oligosaccharide solution: 100 g of prepared sodium alginate oligosaccharide was dissolved in 400 liters of water to prepare a solution.

[0028] (3) Spraying: The sodium alginate oligosaccharide solution is sprayed when the rice seedlings grow to four leaves and one heart in the experimental field of Dalian, Liaoning, and are about 15-20cm high. The spraying amount is the volume (ml) of the sodium alginate oligosaccharide solution: Rice area (m 2 )=100:1.

[0029] It can be seen from Table 1 that after spraying with sodium alginate oligosaccharide solution, the defense enzyme activities including phenylalanine ammonia lyase, peroxidase, and catalase in rice seedlings were significantly higher th...

Embodiment 2

[0031] (1) Sodium alginate oligosaccharide preparation: Take 1 kg of sodium alginate, dissolve it in 100 liters of water, add 10 liters of 30% hydrogen peroxide, react at 80°C for 90 minutes, freeze-dry for 48 hours, and grind into powder .

[0032] (2) Preparation of sodium alginate oligosaccharide solution: 100 g of prepared sodium alginate oligosaccharide was dissolved in 1000 liters of water to prepare a solution.

[0033] (3) Spraying: The sodium alginate oligosaccharide solution is sprayed when the rice seedlings grow to four leaves and one heart in the experimental field of Dalian, Liaoning, and are about 15-20cm high. The spraying amount is the volume (ml) of the sodium alginate oligosaccharide solution: Rice area (m 2 )=1000:1.

[0034] It can be seen from Table 1 that after spraying with sodium alginate oligosaccharide solution, the defense enzyme activities including phenylalanine ammonia lyase, peroxidase, and catalase in rice seedlings were significantly higher ...

Embodiment 3

[0035] Embodiment 3 (blank sample)

[0036] Water spraying: routine water spraying treatment was carried out when the rice seedlings grew to four leaves and one center in the experimental field in Dalian, Liaoning, and were about 15-20 cm high.

[0037] Table 1 Effect of sodium alginate oligosaccharides on defense enzymes in rice seedling leaves

[0038]

[0039]

[0040] Table 2 Control effect of sodium alginate oligosaccharides on rice blast

[0041] Detection Indicator

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Abstract

The invention provides a method for raising disease resistance of paddy rice to rice blast by the utilization of alginooligosaccharide. By spraying alginooligosaccharide during the rice seedling stage, activity of defensive enzymes--phenylalnine ammonialyase, catalase and peroxidase in the rice leaves is raised, and furthermore disease resistance of paddy rice to rice blast is enhanced. By the method, disease resistance of paddy rice is enhanced, and growth of paddy rice is promoted. Meanwhile, the method is simple and feasible and is beneficial to agricultural promotion and application.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and particularly relates to a new method for spraying rice seedlings with alginic acid oligosaccharides to improve rice blast resistance. Background technique [0002] Rice is an important food crop in China and is widely planted throughout the country. Rice blast is one of the most serious rice diseases in my country's rice fields, and it occurs to varying degrees every year, resulting in a decline in rice yield and quality. At present, the control of rice blast is mainly controlled by chemical agents. However, in recent years, the frequent and indiscriminate application of chemical pesticides has caused serious environmental pollution and drug residues, and there is an urgent need to develop non-polluting and degradable biopesticides. Oligosaccharides have the advantages of being harmless to humans and the ecological environment, not easy to produce drug resistance, and biodeg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/16A01P3/00A01P21/00
CPCA01N43/16
Inventor 李宪臻唐文竹
Owner DALIAN POLYTECHNIC UNIVERSITY
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