Seizing the opportunity to do well the autumn control of weeds in wheat field

Weeds in wheat fields in our county are divided into broad-leaved weeds and Gramineae weeds. Broad-leaf weeds are mainly Artemisia annua, shepherd's purse and wheat bottle grass, and there are more calamities in some plots; malignant Gramineae weeds are mainly brome and Aegilops, and some plots are more. At present, with the growth and development of winter wheat, weeds have been unearthed. Weeds in wheat field have a great influence on wheat yield, the age of grass in autumn is small, the control effect is ideal, the control effect is poor in spring and is easy to cause drug damage to wheat and next crops, so we strongly advocate the control of weeds in wheat field in autumn and winter.

Prevention and control methods:

1. Wheat fields dominated by Gramineae weeds

The control time is controlled in the wheat 3-leaf stage (late October to early November). The methods are as follows: the wheat fields dominated by brome and sorghum are sprayed evenly with 70% puma tiger 3 grams plus special auxiliaries of 10 grams per mu, and 30 kg of water is sprayed evenly on the wheat fields dominated by wheat knots, with 3% Shima 30-40 ml plus special auxiliaries or 3.6% Kuoshima water dispersible granules 20-25 grams plus special auxiliaries per mu, 30 kg of water is sprayed.

2. Wheat fields dominated by broad-leaved weeds

From late November to early December, frozen water was poured or sprayed when the surface was wet after rain. Fields dominated by Artemisia annua, Shepherd's purse and wheat bottle grass were sprayed with 30 kg of water with 10% benzenesulfuron and other wheat field herbicides; wheat fields dominated by Mai Jia Gong and pigs were sprayed with 36% Pentium 7-10 grams or 40% carbendazim 2 grams plus 10% benzenesulfuron 8 grams per mu, and 30 kilograms of water was sprayed.

3. Mixed wheat fields of Gramineae weeds and broad-leaved weeds.

It can be mixed with benzenesulfuron or Pentium plus tiger or Shima.

Note:

The main results are as follows: 1. When preparing the medicament, we should adopt the secondary dilution method, that is, first mix a small amount of water into the mother liquid, then add water according to the dilution multiple, fully stir and spray evenly, choose the medicine in sunny and windless weather, and the water consumption per mu is 30 kg.

2. The wheat fields treated with herbicides, especially those using Koushima and Shima herbicides, are required to have sufficient base fertilizer and strong wheat seedlings, and should not be flooded 2 days before and after medication. Fan-shaped sprinklers should be used when spraying, and the wheat will be yellowed after using Shima, and the symptoms will disappear after 3-4 weeks, and the yield will not be affected. Stop spraying when the lowest temperature is less than 4 ℃.