What kind of medicine is used for weeding in watermelon field

In the process of planting, watermelon is easy to produce weeds, and watermelon is very sensitive to herbicides, if not used properly, it will lead to the decline of watermelon quality. So, what kind of medicine is used to weed the watermelon field?

What kind of medicine is used to weed the watermelon field?

Before emergence of watermelons after sowing, herbicides such as 25% aminophos EC, or 80% chlorpromazine wettable powder, or 50% oxazolamine wettable powder can be used. Herbicides such as 48% trifluralin EC, 48% trimethoprim EC, or 50% Metolachlor EC can be used 2-3 days before transplanting watermelon seedlings. After watermelon transplanting, herbicides such as 48% trifluralin EC or 33% dimethalin EC can be used before emergence. During the growth period of watermelon, 35% pyrrofozolin EC, or 20% clenbuterol EC, or 12.5% fluoromethyl EC can be used.

Second, what are the points for attention in sweet weeding of watermelons?

1. Correct selection of herbicides

There are many kinds of herbicides available in watermelon production. The most commonly used are 48% trifluralin EC, 25% herbicide wettable powder, 33% herbicide EC, 48% Deletamine EC, 12.5% herbicide EC, 15% trimethoprim EC, 15% trimethoprim EC, 48% Lasol EC, 10% herbicide EC and so on.

2. Strictly control the dosage.

48% trifluralin 75-125 ml per mu, 25% herbicide 100-150 g per mu, 33% herbicide 80-130 ml per mu, 48% trimethoprim 200 ml per mu, 12.5% cover grass can 65-150 ml per mu, 15% steadily kill 75-130 ml per mu, 15% firmly kill 50-60 ml per mu, 48% lasso 150-200 ml per mu, 10% herbicide 65-100 ml per mu. 40-50 kg of water was mixed respectively and sprayed on the surface of the soil before watermelon transplanting. Among them, fluralin is easy to decompose after seeing the sun, and the medicine soil will be raked evenly with tooth rake after spraying, with a depth of up to 5 cm, so that the efficacy can be brought into full play.

3. Flexible application according to place and time

The effect of herbicide application on watermelon is closely related to the ecological environment, for example, the effect of herbicide application in sandy loam is faster than that in clay, but it is safer in clayey soil, and the higher concentration of sandy loam is easy to cause drug damage. It is necessary to accurately control the dosage according to the soil. The effect of killing weeds is better when the temperature is above 20 ℃. When the temperature is not high in spring and autumn, the dosage should be increased appropriately, and the dosage should be reduced when the temperature is high in summer. The weeding efficiency is high when the soil moisture is good, and the weeding effect decreases when the soil moisture is poor, so the medicine should be used when the soil moisture is good.

Because watermelon is a kind of fruit, if the weeds in the field are not very serious, try to use artificial weeding as a pollution-free way.