Biological insecticide for Chinese cabbage and preparation method thereof

A bio-insecticide, cabbage technology, applied in the field of pesticides, can solve the problems of large impact on yield and quality, consuming manpower and material resources, pesticide residues, etc., to delay the emergence of drug resistance, improve quality and yield, and enhance insecticidal effects. Effect

Inactive Publication Date: 2015-04-01
罗翼
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Problems solved by technology

The damage characteristics of aphids and whitefly: Both adults and nymphs suck the juice of Chinese cabbage, resulting in chlorosis, yellowing, wilting of the damaged leaves, and even the death of the whole plant; the secreted honeydew seriously pollutes the leaves, causing mildew. Make cabbage lose its edible value; in addition, it can also spread viral diseases
The damage characteristics of cabbage caterpillar, beet armyworm and diamondback moth: all three kinds of pests eat leaves with larvae. After the 3rd instar cabbage caterpillar can eat the whole leaf, and only the leaf veins are the most serious damage, which seriously affects the growth and core of cabbage, resulting in reduced yield ;The beet armyworm mainly gathers the back of the leaves with newly hatched larvae and spins silk to form a net, and eats the mesophyll in it, leaving the epidermis to form small transparent holes. After the 4th age, the food intake increases greatly, and the leaves are eaten into holes or notches. Only the veins and petioles are left,

Method used

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Embodiment Construction

[0018] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0019] A biopesticide for cabbage, consisting of the following components and weight percentages: 6% ginger, 10% garlic extract, 7% sealwort extract, 10% Ailanthus bark extract, and 12% bitter almond extract , saponin extract 13%, white pepper extract 15%, azadirachtin extract 10%, berberis extract 17%.

[0020] The above-mentioned preparation method for the biopesticide for Chinese cabbage, its concrete preparation steps are:

[0021] (1) Preparation of ginger and garlic extract: choose fresh garlic or ginger, wash and dry, weigh 500g, put it in ethanol with a volume concentration of 75% for surface disinfection for 5min, and rinse it with sterile water for 3 times Put it in a tissue homogeniz...

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Abstract

The invention discloses a biological insecticide for Chinese cabbage and a preparation method thereof. The biological insecticide for Chinese cabbage is composed of the following components with contents in percentage by weight: 5-12% of fresh ginger extract, 8-15% of garlic extract, 5-10% of sealwort extract, 4-12% of ailanthus peel extract, 7-12% of semen armeniacae amarae extract, 10-18% of saponin extract, 8-16% of white pepper extract, 4-10% of azadirachtin extract and 7-20% of berberis thunbergii extract.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a preparation method of a biopesticide for Chinese cabbage. Background technique [0002] Chinese cabbage pests mainly include aphids, whiteflies, cabbage caterpillars, beet armyworms, and diamondback moths. The damage characteristics of aphids and whitefly: Both adults and nymphs suck the juice of Chinese cabbage, resulting in chlorosis, yellowing, wilting of the damaged leaves, and even the death of the whole plant; the secreted honeydew seriously pollutes the leaves, causing mildew. Make cabbage lose its edible value; in addition, it can also spread viral diseases. The damage characteristics of cabbage caterpillar, beet armyworm and diamondback moth: all three kinds of pests eat leaves with larvae. After the 3rd instar cabbage caterpillar can eat the whole leaf, and only the leaf veins are the most serious damage, which seriously affects the growth and core of cabbage, res...

Claims

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Application Information

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IPC IPC(8): A01N65/48A01P7/04A01P7/02
CPCY02A50/30
Inventor 罗翼
Owner 罗翼
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