What kind of medicine should I use to kill grass? Recommendation of six common herbicides

In summer and autumn, the climate is high-temperature and rainy, which is very conducive to the growth of weeds in the field. As far as growers are concerned, they should learn to distinguish the types of weeds and select herbicide varieties scientifically. If they are not used properly, they are easy to cause drug damage. In fact, herbicides can be classified according to different medicinal properties, and the main points for the use of different categories vary greatly. So what kind of medicine should I use to kill grass? These six common herbicides may help you.

1. Acetochlor

It is mainly used to control a variety of annual Gramineae weeds and some broad-leaved weeds, but not to perennial weeds.

Applicable crops: soybean, peanut, corn, cotton, rape, rice, potato and so on.

Note: ① is used in sandy soil with low organic matter content and low dose; ② should not be used in rice seedling field; ③ cucumber, melon, spinach, leek and sorghum are sensitive to Acetochlor and should be used cautiously or less.

2. Diuron

It is mainly used to control most annual and perennial weeds, such as Artemisia mandshurica, Euphorbia angustifolia, Setaria angustifolia, barnyardgrass, Li, sedge and so on.

Applicable crops: cotton, sugarcane, soybean, peanut, corn, cucumber, rice and so on.

Note: ① wheat field is prohibited, it has a strong contact effect on cotton leaves, pesticide must be used on the soil surface, cotton seedlings should not be applied; the amount of ② sand land is less than clay land, sand leakage paddy field should not be applied.

3. Glyphosate

It can control almost all perennial weeds in one-year life, and has outstanding control effect on common weeds such as Digitalis, iron amaranth, amaranth, sedge and so on.

Applicable crops: orchards, corn, sugarcane and so on.

Note: ① glyphosate is a destructive herbicide, do not pollute crops, so as not to cause drug damage; ② can not use turbid river water or hard water to prepare liquid; ③ has a good effect in sunny days and high temperature, and should be sprayed in case of rain within 4-6 hours after spraying.

4. Metolachlor

It has outstanding effect on annual grasses such as Euphorbia angustifolia, Echinochloa tenuifolia, barnyardgrass, Setaria pratensis, hard grass, Kentucky bluegrass and so on. It has obvious effect on broad-leaved weeds such as Like, Solanum nigrum, dodder, cauliflower and so on.

Applicable crops: Rice, soybean, sugar cane, peanut, corn and so on.

Note: ① has good control effect on large soil moisture, while ② has poor effect on some weeds such as purslane, iron amaranth, pig calamity, duck toe grass, bauhinia and so on.

5. Fluorosulfen

It can control hemp, Polygonum willow, iron amaranth, amaranth, ragweed, needle grass, field flower, shepherd's purse, Li, split leaf Petunia and so on.

Applicable crops: soybeans, mung beans, peanuts, etc.

Note: ① the drug has a relatively long residual period in the soil, will not be passivated in the soil, and the amount of ② is too large, which is crucial to the following Chinese cabbage, sorghum, corn, wheat, sugar beet, flax and so on.

6. 2-4D butyl ester

It has good control effect on Chenopodium, Polygonum, amaranth, amaranth, Portulaca oleracea, Bauhinia, bitter cauliflower, thistle and Xanthium.

Applicable crops: wheat, corn, sorghum, millet, rice and so on.

Note: the suitable application period of ① to control weeds in wheat field is two stages: the elongation period of wheat differentiation growth cone and floret differentiation to pistil and stamen differentiation; ② environmental conditions have a great impact on the herbicide efficacy and safety, generally in high temperature, strong light, strong air and soil moisture, it is not easy to produce critical, and can play the efficacy; ③ is highly volatile, the field should have a certain distance from the sensitive field.

Phellodendron mandshurica (Thunb.)

These are the six common herbicide recommendations. In addition to the variety of the agent itself, the factors that affect the efficacy of killing weeds are temperature, concentration and method of application, so these factors should also be taken into account before using the drug.

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