In recent years, although more and more varieties of herbicides have become more expensive, the control effects of broad-leaved weeds such as leeks, sowing wormwood, and swine fever have become worse and worse. With the implementation of the operation of the machine-cutting zone of wheat, the grassy weeds that come with it are also widespread and harmful. Many people do not pay attention to the growth of weeds in the fall, and often miss the appropriate timing of prevention and control after the discovery in the spring. They can only grazing on the growth of dense wheat weeds and cause loss of yield. In fact, in the autumn, with the emergence and growth of wheat, various weeds will be gradually unearthed. At this time, the weeds will grow young and have a weak resistance to insects. Using low-dose, low-water quantities of common herbicides will save time and labor. The effectiveness of the control is the best time to use drugs.
Spray herbicides in the fall should pay attention to the following points:
According to the main weed species selection and drug distribution for leek, sowing and other broad-leaved weeds, spraying high-quality tribenuron-methyl plus fluoxylone or tribenuron-methyl fumarate can be; for oat-based wheat fields , Spraying the essence of fazolyl trifolium on the line, for the oats and brome wheat mixed wheat field, spray tigris (xefloxulfuron) can be; for the more frequent wheat, cornfield can be sprayed wide Shima (Methylsulfuron-methyl and methyl iodosulfuron complex formulation).
Immediately after spraying the wheat seedlings with 3 true leaves, spraying was done on a sunny day. Do not spray before and after a substantial cooling down, continuous drought or field water is not available drugs. In conclusion, it is to be applied under conditions conducive to the normal growth of wheat. When the growth of wheat is impeded, spraying can easily produce phytotoxicity.
Strictly according to the recommended dose of the drug can not be mixed randomly arbitrarily increase the amount of drug can easily cause injury, especially for the control of grassy weed agents. It is also not allowed to mix other pharmaceuticals, for example, Kwada may not be used in combination with other drugs. Puma may be used in combination with tribenuron but not in combination with 2,4-D or dimethyl tetrachlorine. Tribenuron was used in combination, but flufenoxime could not be mixed with fluoxypyr.
Two-dilution is evenly sprayed with water. The 2,4-D herbicide has a drifting effect. Even if the spraying is not uniform, it has a good control effect on falling sickness. However, there is no drift in the above-mentioned medicament, and it must be ensured that there is enough liquid falling on it. Weed control can be effective. Therefore, the commonly used knapsack sprayer requires no less than 30 kilograms of water per mu. That is, two buckets of water can achieve better results. The dosage of these agents per acre is very small, and it is best to first use a small amount of hydration into the mother liquor and then pour it into a sprayer filled with water, that is, a double dilution.
Note that sensitive varieties of hard wheat varieties should be used cautiously when they are sensitive to Cosmos. The use of herbicides to treat weeds is a provincial and labor-saving management measure for wheat fields. If you violate the technical requirements and just rely on feelings to implement them arbitrarily, you may find it hard to pay for the results, or even cause phytotoxicity, resulting in greater losses. Therefore, it is advisable that wheat be properly herbicided before the winter in order to save labor and control efficiency.
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