Three chemical standards for wheat chemical weed control

Time to find

After the spring, the day is getting longer, the temperature is gradually rising, and the wheat and weeds grow rapidly. It is necessary to grab the early and grab the medicine quickly. Farmers are reminded to carry out wheat chemical control before 9:00 am after 9:00 am, especially to avoid the rainy weather. After the spring, it is very prone to cold spring, to avoid the occurrence of frozen drugs. It is necessary to hurry up and use the medicine when the cold tail warms up and the temperature rises. In the early spring, the temperature changes indefinitely. Pay attention to the local real-time weather forecast when applying the medicine.

Pharmacy selection

Look at the grass phase and the grass age before weeding herbicides must look at the grass phase, such as the division of grass weeds and non-grass weeds; see weed density and grass age problems (years after weeds are too large) ).

Accurate choice of agents For the selection of chemical herbicides, you must choose the products of the regular registered manufacturers, do not use the agents containing hidden components. At present, there are mainly several types of pharmaceuticals in the market: grass weeds, which are represented by oxazocilin and acetylene oxalate; for the field mainly based on wild oats in the north of Huaihe. Single-agent or compound preparation represented by methyl disulfuron: It can be used mainly for bluegrass, hard grass and maiden in the south of Huaihe River. Broadleaf weeds, dimethyltetrachloride single agent and compound preparations are used for the mother-in-law, beef sorghum, sauerkraut, and thorny vegetable fields. The wheat must be used after 4 leaves and 1 heart until the jointing.

Drug volume

Use the amount of foot medicine, the amount of water in the foot, spray evenly, and dilute to prepare the mother liquor. After the year, the chemical control time of wheat is relatively short, and the weed grass age is relatively large. It is necessary to maximize the control effect. It is recommended to increase the dose of weeds of different kinds of weeds and different grass ages (not blindly increase and increase). Rationally compounded for chemical control. At this time, chemical control should be carried out due to the rapid growth of wheat. At least one acre, one bucket and half water should be guaranteed at the time of application. The mother liquor should be diluted twice to evenly spray to avoid the leakage of the wheat seedlings. Note: It is forbidden to fight herbicides when wheat enters jointing stage.

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