In recent years, many wheat weeds have used chemical herbicides to eliminate the trouble of manual weeding. However, if the method is improperly used, it will not only affect the weeding effect, but also cause phytotoxicity to tomorrow. Therefore, safe and efficient weeding must pay attention to three points:
First, the preparation of the drug is diluted twice
The preparation of the medicament must be carried out by means of a second dilution method. It is forbidden to add water after pouring the medicament first, so that the medicament is easily deposited at the suction pipe of the sprayer, so that the concentration of the first sprayed liquid is high, and it is easy to cause phytotoxicity, and the concentration of the sprayed liquid is discharged. Low, poor weeding effect. Also, do not pour the medicine into a sprayer containing a large amount of water, so that the wettable powder tends to float on the water meter or form a small piece, and the distribution is uneven, which not only does not guarantee the effect but also easily blocks the spray hole when sprayed.
Second, the chemical liquid clean water preparation
The liquid should be prepared with clean water, depending on the situation. The amount of water sprayed by the herbicide in the soil treatment should be higher. The amount of water to be treated with 50 to 60 kilograms per mu , the conventional spray water for herbicides treated with stems and leaves can be appropriately reduced. The water consumption per mu is generally 30 to 45 kilograms, and the moisture is insufficient. When you need to increase the amount of water, do not apply the medicine temporarily.
Third, the use of special sprayers
It is best to use a special sprayer for herbicides. If there is no special equipment, it must be soaked with quicklime or stone sulphur for more than 48 hours after spraying , and then rinsed with water to spray other crops. The herbicide mixture must be flexibly selected according to the characteristics of the herbicide, the characteristics of weed occurrence, and the stage of crop growth, so as to avoid blind mixing of herbicides.
　 In the event of phytotoxicity in wheat fields, the following methods must be used for rapid remediation:
　　 1. Spray with clear water. When the spraying dose of herbicide is too large, it should be sprayed with clean water in time to remove leaf residue, reduce the concentration of herbicide in crops, reduce phytotoxicity, and strengthen fertilizer and water management.
　　 2 , gram without traces of phytotoxicity to wheat, can be immediately sprayed with ferrous sulfate solution for treatment.
　　 3. The phytotoxicity caused by the contact herbicide can be sprayed with foliar fertilizer to promote the rapid recovery of the crop, thereby relatively reducing the phytotoxicity.
Â
UVC Disinfection Portable UV Lamp
Uvc Lamp,Uv Germicidal Bulb,Uv Germicidal Lamp,Uvc Tube
Changxing leboom lighting product CO.Ltd. , https://www.leboomuvd.com