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Weeding corn fields, why the same medicine has different effects?

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Weeding corn fields, why the same medicine has different effects?

pubdate:2019-05-28 00:00 source:http://www.mazaland.com Click:

In recent years, it has become more common for people to use herbicides on corn fields. However, many users asked about the herbicides purchased at the same time. One field has a good effect, while another field has a poor effect. What is the reason? What? Synthetic ammonia manufacturers


In fact, the reason for this phenomenon is not only the quality difference of the herbicide product itself, but also many other external factors. There are several factors:


1. Spray the herbicide too late


At present, the herbicides used by everyone are generally applied before the 2-5 leaf stage of the corn and the 2-3 leaf stage of the weeds. The application time is too late, which leads to the overage of the grass and the insufficient application of the herbicide, which seriously affects the efficacy.


2, improper application method


If the corn herbicide is sprayed in the same way as other agents, the footprints will destroy the chemical film on the ground that has not formed a good film, which will cause a serious decline in the efficacy of the herbicide.

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3. Insufficient humidity in the field


When the herbicide was sprayed on corn, the field humidity was not enough, and the liquid medicine evaporated immediately when it touched the surface water, so that the liquid medicine could not form a medicine film on the ground, which caused the medicine to not function normally and did not work well.


4. The water consumption is too small, and the film coverage is uneven


There are many users whose water consumption is too small. Generally, the water consumption per mu is at least 30-40 kg. Individual users only use one bucket of water per mu.


5. Difference in application time


also does not rule out some migrant workers, in order not to delay work, spraying during the lunch break at noon, the liquid evaporates quickly, affecting the effect of weeding.


6. The wheat stubble is too high, the wheat straw is not cleaned, and the liquid medicine cannot be sprayed on the soil layer.


7. Soil quality reasons. Sandy soil, saline-alkali land and overfired land (grass ash is alkaline) have a certain influence on the weeding effect.


In view of the above reasons, we suggest that when applying herbicides, maintain the proper humidity in the field and remove the excessive straw in the wheat field. Adjust or increase the dosage according to the soil quality. Choose to spray at the 2-5 leaf stage of corn, 2-3 leaf stage of weeds, in the morning or evening when the soil surface moisture is high, to form a pellicle, improve the weeding effect, and spray In the process, an inverted style is used to ensure that the efficacy of the herbicide can be played normally.


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