1. Strictly control the dosage used. If the dosage is too large, it will cause phytotoxicity.
2. Strictly master the period of use. When it is not applied, the herbicide will match the sensitive period of the crop, which will cause phytotoxicity. For example, the use of herbicide, butachlor, quinclorac, etc. in the germination stage of rice seeds is likely to cause a decrease in the emergence rate of rice, a decrease in the quality of the seedlings, and death of the seedlings in severe cases. The herbicides such as 2.4-D butyl fat / herbaceous enemy are sprayed before the wheat 3 leaf stage and after the jointing to the flowering stage, and phytotoxicity occurs, which causes the wheat ears to curl and affect the heading.
3. Choose the correct method of application. If the application method is not correct, it will also cause phytotoxicity. For example, when using oatmeal in wheat fields, due to improper concentration of mixed soil, it is likely to cause phytotoxicity due to the same seeding concentration of wheat. The soil treatment agent used for post-emergence stem and leaf treatment, and the stem and leaf treatment agent used in soil treatment did not achieve the herbicidal effect. Spraying the herbicide requires a sufficient amount of liquid spray, and generally does not use a low volume mister.
4, the application should be even and thoughtful. Herbicides should strive to be uniform regardless of spray or application of soil or fertilizer. The application is not uniform, and it is easy to produce phytotoxicity or poor weeding effect.
5. Master the appropriate interval between administrations. When two drugs are used in the same crop. Appropriate intervals should be in place, and too close intervals can also cause phytotoxicity. For example, the use of organophosphorus or carbamate insecticides at the same time or soon after the use of propanil causes the rice to lose its ability to detoxify the enemy and cause phytotoxicity.
6, pay attention to field management. The soil should be leveled as much as possible, and field operations, fertilizer and water management should be adjusted with the application of herbicides.
2. Strictly master the period of use. When it is not applied, the herbicide will match the sensitive period of the crop, which will cause phytotoxicity. For example, the use of herbicide, butachlor, quinclorac, etc. in the germination stage of rice seeds is likely to cause a decrease in the emergence rate of rice, a decrease in the quality of the seedlings, and death of the seedlings in severe cases. The herbicides such as 2.4-D butyl fat / herbaceous enemy are sprayed before the wheat 3 leaf stage and after the jointing to the flowering stage, and phytotoxicity occurs, which causes the wheat ears to curl and affect the heading.
3. Choose the correct method of application. If the application method is not correct, it will also cause phytotoxicity. For example, when using oatmeal in wheat fields, due to improper concentration of mixed soil, it is likely to cause phytotoxicity due to the same seeding concentration of wheat. The soil treatment agent used for post-emergence stem and leaf treatment, and the stem and leaf treatment agent used in soil treatment did not achieve the herbicidal effect. Spraying the herbicide requires a sufficient amount of liquid spray, and generally does not use a low volume mister.
4, the application should be even and thoughtful. Herbicides should strive to be uniform regardless of spray or application of soil or fertilizer. The application is not uniform, and it is easy to produce phytotoxicity or poor weeding effect.
5. Master the appropriate interval between administrations. When two drugs are used in the same crop. Appropriate intervals should be in place, and too close intervals can also cause phytotoxicity. For example, the use of organophosphorus or carbamate insecticides at the same time or soon after the use of propanil causes the rice to lose its ability to detoxify the enemy and cause phytotoxicity.
6, pay attention to field management. The soil should be leveled as much as possible, and field operations, fertilizer and water management should be adjusted with the application of herbicides.
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