What kind of herbicide is used to control malignant weeds and reeds? What kind of herbicide can effectively kill Reed in corn field? Try these recipes!

Reed is one of the main plants growing in the wetland environment. Its strong vitality and rapid propagation ability seriously affect the growth of farmland crops and become a kind of malignant weed which is difficult to control. What kind of herbicide is used to get rid of reeds? What kind of herbicide is used by Reed in corn field?

Reed is a perennial Gramineae plant, aquatic or wet (like barnyardgrass, it can grow in water (rice) fields and dry fields). The rhizome is well developed. Culms erect, 1-3 m tall, 1-4 cm in diameter, with more than 20 nodes, basal and upper internodes shorter, lower longer. High polyploid and aneuploid plants. Born in rivers and lakes, along ponds and ditches and low wetlands, Phragmites communis is a polytypic species widely distributed all over the world. In addition to the forest habitat does not grow, all kinds of open areas with water can form a series of Reed communities.

Reeds are widely distributed in China, including Liao River Delta, Songnen Plain and Sanjiang Plain in Northeast China, Hulunbuir and Xilingol grassland in Inner Mongolia, Bosten Lake, Yili River Valley and Tacheng Emin River Valley in Xinjiang, and Baiyangdian River Valley in North China Plain. It is a large area where reeds are concentrated.

Why is it difficult to control reeds?

1. False death

When the leaves are treated with medicine, substances will be secreted from the stem to make the leaves fall off, and it is very difficult for the medicine to be transmitted to the root of the Reed through the vascular speed. after a short period of yellowing, the stem produces new branches and leaves from the axillary buds.

2. Epidermal shielding

Wax epidermis has the function of waterproof and impervious. The medicine can not penetrate into the vascular bundle through the epidermis at all, and the drug is ineffective.

3. Developed root system

The rhizome grows in three directions: oblique upward, oblique downward and lateral, which constitutes the strong reproductive ability of Reed.

However, in recent years, the occurrence of Reed in low-lying areas of northern China is becoming more and more serious, especially in fields near canals, low wetlands, newly reclaimed fields and dry fields. The Reed has a transverse rhizome, and propagates with a rhizome, crisscross to form a network.

Rhizome has a strong vitality, can be buried in the ground for a long time, 1 meter or even more than 1 meter rhizome, once the conditions are suitable, it can still develop into new branches. It can also be propagated by seeds, and seeds can be spread with the wind.

Control method of Reed

During the crop growing period, a small number of reeds in the field were selectively smeared with appropriate concentrations of glyphosate plus dimethyltetrachloride, capping herbicides or refined grass herbicides or broken by hand, and the solution was dripped into the Reed core with a needle tube, which can effectively kill the Reed by root and prevent it from spreading in the field. When using medicine, be careful not to let rice and wheat plants come into contact with the drug, otherwise it will cause drug damage.

The method of removing Reed can first cut the Reed waist with scissors, and then glyphosate (glyphosate can be diluted or not diluted, the effect of general non-dilution is better). Under the action of medicine, the Reed will be necrotic. This method can also be used in a small area. The removal of large areas of Reed can be done by the following methods:

A: liquid preparation: add glyphosate or 10.8% high-efficiency fluoromethyl, pesticide synergist organosilicon to the bucket of clear water (saline-alkali-free deep well water), stir fully, dissolve and then pour it into the sprayer for secondary stirring and dilution.

B: spraying time: on a sunny day when there is no dew, 7-12 a.m. and 6-11 p.m.

C: spraying method: the effect of artificial directional spray is the best when 3-5 pieces of Reed are used, the gramineous weeds such as Reed are evenly sprayed, drenched and drenched, and the water consumption per mu is 30 kg. Can also use tractor medicine can slow down driving spray, water consumption of 50 kg per mu.

What kind of herbicide can effectively kill the reeds in the corn field?

The main results are as follows: 1. Common control methods: nitrosulfone + nicosulfuron + atrazine spray can be used after corn seedlings (note: can not be used for waxy corn). The root of Reed can also be manually dug up in a concentrated area.

2, eradication method: 10% glyphosate 1:1 can be diluted with water to prepare the mother liquor. After cutting the Reed, the hollow tube of the Reed Internode is injected with 5mL. The leaves turned yellow on the second day after injection, and all the stems on the ground withered in about two weeks. The above method was used again when sporadic reeds occurred the following year.