What are the weeding methods for lawn weeds?

For malignant weeds, in the case of small lawn area, it is generally to turn over the ground, or to carry out manual weeding, mainly manual weeding, or to use simple weeding tools, but the effect is not good and it is very laborious.

2. Carry out physical weeding

We can use light, water, heat and other physical factors to weed, such as burning the lawn to weed, soaking weeds in water, and covering the soil surface with dark plastic film to shade, so as to raise the temperature and play a role in weeding.

3, timely and appropriate sowing, inhibit weeds.

At the same temperature, weeds are not as neat as lawn grass. Therefore, when the temperature is suitable for lawn germination, as long as the humidity is suitable, it is necessary to sow in time to make lawn grass grow and germinate neatly. Timely sowing can take advantage of the competitive advantage of lawn to control the growth of weeds from sowing to maturity, and the sowing amount can be increased appropriately. During this period, we can grasp the growth law of lawn grass in time, fully ensure its growth conditions in peak season, make it flourish, occupy living space and inhibit weeds.

Step 4 use herbicides

At present, turf grasses are mainly tall fescue, Bermuda grass, barnyard grass, Zoysia grass and so on. In the case of large lawn area, it is time-consuming and laborious to use manual weeding, and weeding may not be done thoroughly. In the meantime, chemical herbicides can be used, and attention should be paid to the main types of control, and different herbicides should be used for different weeds.

Trifluralin is an aniline herbicide, which can be used to control gramineous weeds for more than one year, and also to control some broadleaf grasses with small seeds. Pesticides are absorbed through the process that weed seeds germinate and then grow through the soil layer, so they have no effect on weeds that have emerged.

If the weeds are crabgrass, milkweed, barnyard grass, green bristlegrass, Chenopodium album and amaranth, they can be applied before the weeds appear. The general dosage is about 65,438+0,000 square meters, and 600-900kg of water is sprayed. Because trifluralin is easy to volatilize and photolyse,