Preparation method of pure natural plant acaricide
A technology for natural plants and acaricides, which is applied in the field of preparation of pure natural plant acaricides, can solve the problems of few types and quantities of botanical insecticides, rare and other problems, and achieves improved control effect, wide source and simple preparation method. Effect
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[0028] Preparation of Zanthoxylum bungeanum extract: Dry the Zanthoxylum bungeanum peel in an oven at 50°C to constant weight, crush the dried Zanthoxylum bungeanum, pass through a 40-mesh sieve, and collect the powder for later use; weigh 100g of Zanthoxylum bungeanum powder, add 1000ml of 60-90°C boiling range Under the conditions of temperature 50°C, power 500W, and frequency 40kHz, extract in an ultrasonic water bath for 40 minutes, and obtain the filtrate by suction filtration; repeat the extraction of Zanthoxylum bungeanum powder three times, combine the filtrates for three times, and concentrate under reduced pressure to obtain the extract; The substance is settled to 1g / ml (dry matter content) with sherwood oil, promptly obtains described Zanthoxylum bungeanum extract;
[0029] Preparation of Nuxychnium extract: Dry Nuxychnium in an oven at 50°C to constant weight, pulverize the dried Nuxychon, pass through a 40-mesh sieve, and collect the powder for later use; weigh 10...
Embodiment 1
[0055] Orthogonal design method was used to screen acaricide formulations. Example 1: According to the raw materials and concentrations corresponding to the examples in Table 4, first prepare a 0.05wt% Tween-80 aqueous solution, add a corresponding amount of Zanthoxylum bungeanum extract and Nuxychnium chinensis extract in a weight ratio of 41:1 and mix evenly. Add the corresponding amount of tea saponin, bamboo vinegar, and fenugreek silicon, stir evenly, and fully dissolve to obtain Example 1.
[0056] All the other examples 2 to 9 were prepared in the same manner as in example 1 according to the raw materials and concentrations thereof in the corresponding examples in table 4. The above-mentioned examples carry out the toxicity test according to the single-dose toxicity test method respectively.
[0057] Table 4 Types of raw materials and their concentrations in 9 examples
[0058]
[0059] As can be seen from Table 5, the insecticidal effect of embodiment 8 and embodi...
Embodiment 106 Embodiment corresponding and ，0.05wt％-80， corresponding and ， corresponding 、、， Embodiment 10。 Embodiment 11、12， corresponding Embodiment and ， Embodiment 1 approach 。 Embodiment 13
[0065] Example 10 According to the raw materials and concentrations corresponding to the examples in Table 6, first prepare a 0.05wt% Tween-80 aqueous solution, add the corresponding amount of Zanthoxylum bungeanum extract and Nuxychnium seed extract and mix evenly, add the corresponding amount of tea saponin , bamboo vinegar, and quince silicon were stirred evenly, and fully dissolved to obtain Example 10. Embodiment 11,12, all press the raw material of corresponding embodiment and concentration thereof in the table, make by the same method of embodiment 1. Example 13: Take a certain amount of 0.6% matrine water solution and dilute it 1000 times with water.
[0066] Table 6 field efficacy test embodiment
[0067]
[0068] The field experiment was carried out in the organic vegetable greenhouse of Shangzhuang Farm, Haidian District, Beijing from June 11, 2021 to June 18, 2021. The soil conditions, fertility conditions, and plot cultivation conditions of the test sites wer...
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