Special herbicide after emergence of corn seedlings
A herbicide, corn field technology, applied in the directions of herbicides and algaecides, application, biocides, etc., can solve problems such as easy to produce phytotoxicity, and achieve the goal of promoting or inhibiting organ growth, reducing phytotoxicity, and ensuring zero residues. Effect
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Embodiment 1
[0029] Proportion (wt%): Atrazine 10%, Mesotrione 5%, 2,4-Dichlorophenoxyacetic acid 10%, AEO-38%, Dimethyl phthalate 3%, Xanthan gum 2%, simethicone 0.2%, sodium benzoate 0.2%; the balance is soybean salad oil.
[0030] Preparation:
[0031] (1) Pre-crushing and mixing: atrazine, mesotrione, 2,4-dichlorophenoxyacetic acid, AEO-3, dimethyl phthalate, xanthan gum, simethicone, sodium benzoate Stir and mix with soybean salad oil evenly, add to a high shear disperser for shear dispersion, and control the average particle size to 3 μm;
[0032] (2) Superfine grinding: the material cut in the above step (1) is subjected to superfine grinding through a sand mill, and the average particle size is controlled to be 0.3 μm.
[0033] Applicable crops: common corn, sweet corn and waxy corn are all safe.
[0034] How to use: 2-8 leaves can be sprayed all over the field. 200 grams per mu of land, use after diluting with water by the second dilution method.
Embodiment 2
[0036] Proportion (wt%): Atrazine 15%, Mesotrione 5%, 2,4-Dichlorophenoxyacetic acid 5%, Surfactant 6%, Dimethyl phthalate 3%, Xanthan Glue 2%, simethicone 0.2%, sodium benzoate 0.2%; the balance is soybean salad oil.
[0037] The preparation method and usage method are the same as in Example 1.
Embodiment 3
[0039] Proportion (wt%): Atrazine 12%, Mesotrione 5%, 2,4-Dichlorophenoxyacetic acid 8%, Surfactant 7%, Dimethyl phthalate 3%, Xanthan Glue 2%, simethicone 0.2%, sodium benzoate 0.2%; the balance is soybean salad oil.
[0040] The preparation method and usage method are the same as in Example 1.
[0041] In Jinan City, Shandong Province, atrazine (20%) single spray, mesotrione (5%) single spray, 2,4-dichlorophenoxyacetic acid (25%) single spray, atrazine and nitrate The spraying of grass ketone compound (5% mesotrione + 20% atrazine) was used as a comparative example, and a field test was carried out. The preparations of comparative examples were all made into oil suspensions according to the method of Example 1. Wherein, the amount of water sprayed and the spraying method in the comparative example are the same as in Example 1, and the control effect (ie weed reduction rate) on weeds is shown in Table 1.
[0042] Table 1 Weed Control Effects of Examples 1-3 and Comparative...
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