The high temperature this fall is conducive to the occurrence of weeds in wheat fields, and should be guarded against. Chemical weeding has the advantages of labor saving, time saving, labor saving, and good effect. Most of the weeds excavated after 3 leaves of wheat, the grass is poorly resistant to chemicals, which is a favorable opportunity for chemical weeding. Once a control can basically control the damage of wheat field, it has a multiplier effect.
For wheat fields dominated by broadleaf weeds, it can be controlled by benzosulfuron, thiasulfuron and other chemicals, such as 7g of benzenesulfuron-methyl WP or 1% of thiasulfuron-methyl WP 10g. Sexual dicotyledonous weeds can be controlled with 20% flufenoxyacetic acid emulsifiable concentrate 50-60ml; for grasses weeds can be used with 7.5% of the priority (cetosulfamide) water-dispersible granules 12-13g or 70% Fluorosulfonate water dispersible granules 3 ~ 5g, stem and leaf spray control. The above agents may be mixed and used in combination.
In the mixed field of grass weeds and broadleaf weeds, we can use a combination of broad-spotted horse, wheat pole + benzenesulfuron-methyl or sulphur horse + benzenesulfuron-methyl; mixed malignant broadleaf weeds and common broad-leaved weeds The block may be mixed with a combination of bensulfuron-methyl + chlorofluoropyroxyacetic acid or tribenuron-methyl flufenacetate or tribenuron-methyl or bensulfuron-methyl or octanoyl bromoxynil.
In recent years, chemical weeding has led to accidents that have caused phytotoxicity in crops and crops. In order to prevent the occurrence of phytotoxicity, it must be used strictly according to the recommended dosage. Second, it is necessary to ban or avoid the use of medicinal agents that have phytotoxicity to the crops. The long-lasting herbicide chlorsulfuron-methyl and metsulfuron-methyl can easily cause phytotoxicity to crops such as wheat, peanuts and corn after use in wheat fields, and should be banned. Dicotyledonous crops are highly sensitive to 2.4-D butyl ester, which is easy to cause phytotoxicity. Wheat field, wheat peanut, wheat smoke, wheat and other mixed crops should avoid the use of 2.4-D butyl ester and weeding with 2.4-D butyl ester. The agent is weeded.
For wheat fields dominated by broadleaf weeds, it can be controlled by benzosulfuron, thiasulfuron and other chemicals, such as 7g of benzenesulfuron-methyl WP or 1% of thiasulfuron-methyl WP 10g. Sexual dicotyledonous weeds can be controlled with 20% flufenoxyacetic acid emulsifiable concentrate 50-60ml; for grasses weeds can be used with 7.5% of the priority (cetosulfamide) water-dispersible granules 12-13g or 70% Fluorosulfonate water dispersible granules 3 ~ 5g, stem and leaf spray control. The above agents may be mixed and used in combination.
In the mixed field of grass weeds and broadleaf weeds, we can use a combination of broad-spotted horse, wheat pole + benzenesulfuron-methyl or sulphur horse + benzenesulfuron-methyl; mixed malignant broadleaf weeds and common broad-leaved weeds The block may be mixed with a combination of bensulfuron-methyl + chlorofluoropyroxyacetic acid or tribenuron-methyl flufenacetate or tribenuron-methyl or bensulfuron-methyl or octanoyl bromoxynil.
In recent years, chemical weeding has led to accidents that have caused phytotoxicity in crops and crops. In order to prevent the occurrence of phytotoxicity, it must be used strictly according to the recommended dosage. Second, it is necessary to ban or avoid the use of medicinal agents that have phytotoxicity to the crops. The long-lasting herbicide chlorsulfuron-methyl and metsulfuron-methyl can easily cause phytotoxicity to crops such as wheat, peanuts and corn after use in wheat fields, and should be banned. Dicotyledonous crops are highly sensitive to 2.4-D butyl ester, which is easy to cause phytotoxicity. Wheat field, wheat peanut, wheat smoke, wheat and other mixed crops should avoid the use of 2.4-D butyl ester and weeding with 2.4-D butyl ester. The agent is weeded.
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