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Pesticide for controlling aphids and red spiders of melon and fruit crops, and preparation method thereof

A technology for spider mites and melons and fruits, which is applied in the field of pesticides and preparations for preventing and controlling aphids and red spiders in melon and fruit crops. Convenient large-scale production, easy storage, and low preparation cost

Inactive Publication Date: 2010-09-29
甘肃省农业科学院植物保护研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods are limited to simple rough processing and are not suitable for large-scale use, and have not yet been reported for the control of aphids and red spiders in melon and fruit crops.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 27.5 parts of castor oil, 20 parts of solvent (5 parts of methanol, 5 parts of ethanol, 6 parts of n-butanol, 4 parts of isopropanol), 15 parts of emulsifier (8 parts of 2201, 4 parts of 1601, 3 parts of 0201B), infiltration 0.5 part of agent (0.5 part of penetrant BX), 1 part of antifreeze (1 part of ethylene glycol).

[0023] Its preparation method is as follows:

[0024] 1. Grind the dried castor seeds to 30 mesh with a pulverizer and pour them into the extraction tank, add solvent for extraction 3 times, each time the amount of solvent is the same, the extraction time is 24, 48, and 72 hours respectively, and combine 3 For the second extract, pour the extract into a concentration tank at -0.06MPa and concentrate under reduced pressure at 45°C until the solvent evaporates to obtain the castor oil mother liquor. Recover the solvent for later use.

[0025] 2. Add 30 parts of castor oil mother liquor into the preparation kettle at 20°C, then add solvent in proportion,...

Embodiment 2

[0027] 32.5 parts of castor oil, 35 parts of solvent (10 parts of benzene, 10 parts of toluene, 7 parts of xylene, 8 parts of dimethyl sulfoxide (DMSO)), 25 parts of emulsifier (10 parts of 0203B, 10 parts of 127, 5 parts of 103 parts), 2 parts of penetrant (2 parts of azone), 3 parts of antifreeze (3 parts of urea).

[0028] Its preparation method is as follows:

[0029] 1. Grind the dried castor seeds to 40 mesh with a pulverizer and pour them into the extraction tank, add solvent for extraction 4 times, each time the amount of solvent is the same, and the extraction time is 26, 50, 60, and 70 hours respectively. Combine the four extracts, pour the extract into a concentration tank at -0.06MPa, and concentrate under reduced pressure at 45°C until the solvent evaporates to obtain the castor oil mother liquor. Recover the solvent for later use.

[0030] 2. Add 35 parts of castor oil mother liquor into the preparation kettle at 20°C, then add solvent in proportion, stir to di...

Embodiment 3

[0032] 37.5 parts of castor oil, 50 parts of solvent (20 parts of dimethylformamide (DMF), 30 parts of cyclohexanone), 30 parts of emulsifier (10 parts of 700#, 10 parts of 500#, 10 parts of OP-10), 3 parts of penetrant (3 parts of penetrant T), 5 parts of antifreeze (5 parts of calcium chloride).

[0033] Its preparation method is as follows:

[0034] 1. Grind the dried castor seeds to 50 mesh with a pulverizer, pour them into the extraction tank, add solvent for extraction 5 times, each time the amount of solvent is the same, and the extraction time is 25, 40, 50, 60, 70 After 5 hours, the extracts were combined for 5 times, and the extracts were poured into a concentration tank at -0.06MPa and concentrated under reduced pressure at 45°C until the solvent evaporated to obtain the castor oil mother liquor. Recover the solvent for later use.

[0035] 2. Add 40 parts of castor oil mother liquor into the preparation kettle at 20°C, then add solvent in proportion, stir to disso...

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PUM

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Abstract

The invention discloses a pesticide for controlling aphids and red spiders of melon and fruit crops, and a preparation method thereof. The existing botanical bio-pesticide has complex production process and high cost. The raw material formula of the invention is as follows: 27.5-37.5 parts of castor oil, 20-50 parts of solvent, 15-30 parts of emulsifier, 0.5-3 parts of penetrant and 1-5 parts of antifreeze. The preparation method comprises the following steps: crushing the castor seeds and adding the solvent; emerging extract after multiple impregnation extraction, and hydraulically concentrating the extract until the solvent is volatilized to obtain castor oil mother liquor, and adding the solvent into the castor oil mother liquor to be dissolved; and then adding the emulsifier, the penetrant and the antifreeze, and obtaining a castor oil emulsion finished product after evenly mixing. The invention has simple processing technology and low cost, and is suitable for industrial production, the emulsion has good quick effect and long lasting period, can significantly reduce the use number and use dosage of the chemical pesticide, effectively reduces the pesticide residue quantity of melon vegetables, protects the ecological environment, and promotes the quality and safety of agricultural products.

Description

technical field [0001] The invention relates to the field of biological pesticides, in particular to a pesticide for preventing and controlling aphids and red spiders in melon and fruit crops and a preparation method thereof. Background technique [0002] Aphids [Myzus persicae (Sulzer), Aphis gossypii Glover, Brevicorynebrassicae (L.), Lipaphis erysimi (Kaltenbach), etc.], spider mite [Tetranychuscinnabarinus (Boiduval), T. .truncates Ehara and T.urticae Koch, etc.] are the main pests that harm melon and vegetable crops. With the global warming and the continuous expansion of protected cultivation areas, the damage caused by them is serious year by year. First of all, high temperature can increase the number of occurrence bases and increase the number of occurrence generations, and the protected area becomes a place for a large number of pests to overwinter and reproduce in winter. Secondly, in protected cultivation, the natural enemies of pests are often isolated, and the...

Claims

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Application Information

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IPC IPC(8): A01N65/18A01P7/04A01P7/02A01N25/04
CPCY02A50/30
Inventor 胡冠芳刘敏艳李玉奇余海涛张新瑞李建军赵峰
Owner 甘肃省农业科学院植物保护研究所
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