Application of Plant Immune Inducer in Controlling Cucumber Damping-off and Blight

Abstract

The invention discloses application of a plant immune resistance inducer in prevention and control of damping-off and blight of cucumbers. The plant immune resistance inducer is prepared from the following active ingredients in percentage by weight: 0.001 to 0.025 percent of amino-oligosaccharin, 0.01 to 0.25 percent of phosphite and 0.01 to 0.25 percent of phosphate. Each component of the immune resistance inducer obtained by combining the amino-oligosaccharin, the phosphite and the phosphate is mixed in a reasonable proportion, so that a good prevention and control effect on damping-off and blight of the cucumbers can be achieved, an emergence rate and a seedling rate of the cucumbers can be increased, and seedling quality of the cucumbers can be improved.

Description

technical field

[0001] The invention relates to the technical field of biological pesticides, in particular to the application of a plant immune inducer in the prevention and treatment of cucumber damping-off and blight. Background technique

[0002] Cucumber suffers from a variety of pathogenic bacteria during the whole growth process, among which damping-off and blight are the main diseases of cucumber seedlings in winter and spring.

[0003] Most of the pathogens causing cucumber damping-off are melon and fruit rot mold (Pythium aphanidermatum (Eds.) Fitzp), belonging to the flagellate subdivision fungus; mycelia cotton-like, white, mycelium without septum, diameter 2.3 ~ 7.1 μm; sporangia filamentous, size (63 ~ 725) μm × (4.9~14.8)μm; Ovipositor spherical, diameter 14.9~34.8μm. egg spore Spherical, smooth, 14.0-22.0 μm in diameter.

[0004] The pathogen is very saprophytic and can survive in the soil for a long time, overwintering on the diseased plant residues and...

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