What is grass damage and what is good for relieving herb damage?

Because there are too many weeds, they compete with crops for sunlight, water and nutrients, hindering the growth of crops.

Summary. With brassin.

With brassin. Brassin is a good antidote, which can mainly alleviate the damage of glyphosate.

Glyphosate has strong systemic conductivity, which can seriously interfere with the synthesis of protein bulk by inhibiting phosphorase synthase in plants, resulting in crop damage to pesticides. The application of brassinin can accelerate the synthesis and attack of amino acids in the plant, make up for the amino acids lost due to pesticide damage, and meet the needs of crop growth, so as to reduce pesticide damage until normal growth is restored.

In the process of herbicide production and processing, due to the lack of strict control of a certain link, the harmful components exceed the standard or are not well mixed, and the application of this herbicide in rice fields can easily cause pesticide damage. Each herbicide has its own defined scope of use, duration and agent. Misuse, improper expiration date or excessive concentration may cause pesticide damage.

For example, the rapid barnyard is prone to pesticide damage when applied at the seedling stage of rice, and there are no symptoms of pesticide damage in the seedling field. Rice seedlings showed symptoms of pesticide damage after planting to the 7-leaf stage. Use 2-4 chloride in the bud, seedling and jointing stages of rice.

It is easy to cause drug damage. Due to the lack of understanding of the physicochemical properties of herbicides, improper mixing of herbicides is also a factor causing pesticide damage. For example, the mixing of trichlorfon and dimethoate can cause pesticide damage to rice.

Some herbicides do not show pesticide damage to current crops, and pesticide residues often harm the next crop. For example, the use of simazine in corn fields is very effective in controlling weeds. If rapeseed is sown in the next season, the seeds germinate slowly, and the root tip germination and other parts will brown or rot, which will have a great impact on the yield.

For example, spraying wheat grass nets will not cause pesticide damage, and when summer peanuts are planted in the next crop, the young roots will swell and rot, and the seedlings will gradually turn yellow and die, resulting in a serious reduction in yield. <

Hazards caused by improper use are more common. The use of herbicides requires the field to be leveled and kept in shallow water for a certain period of time after application. If the water layer submerges the heart leaf, it is easy to cause pesticide damage.

For example, throwing bottles is easy to produce drug damage. Pesticides are not applied scientifically according to environmental conditions such as climate. Environmental factors such as climate and soil will not only affect the efficacy of drugs, but also affect the occurrence of drug damage.

The main climatic factors affecting pesticide damage are temperature, humidity, rainfall, wind and light, among which temperature and light have the most obvious effects. Low temperature is prone to pesticide damage, observation is prone to pesticide damage, and soil with low organic matter content is prone to pesticide damage. <

It may be that too many herbicides are used, or the wrong herbicides are used, or the herbicides themselves have quality problems, and improper use methods will also lead to harm, so we must use herbicides scientifically.

1. The quality of herbicides is not good.

In the process of herbicide production and processing, due to the lax control of a certain link, the harmful components exceed the standard or are mixed unevenly, this herbicide is very easy to produce pesticide damage in paddy fields.

2. Misuse or improper use.

Each herbicide has its specified range, period and dosage, and misuse, improper use period or excessive concentration are prone to pesticide damage. For example, the application of fast barnyard in the rice seedling stage is easy to produce pesticide damage, the seedling field does not show the symptoms of pesticide damage, and the rice seedlings are inserted into the field to the 7-leaf stage. The use of 2-methyl4-chloride at the bud stage, seedling stage and jointing stage of rice is easy to produce pesticide damage.

This is usually caused by choosing the wrong type of herbicide, and choosing the wrong type of pesticide can damage crops.

What are the symptoms of herbicides? White spots will appear on the leaves, and the tops of the cotyledons and true leaves will turn white. It comes into contact with herbicides such as alaclo (fast harvesting) or photosynthesis.

The top of the leaf turns green, turning white, sometimes yellow or light green, and spreading down through the edge of the leaf. They are triazine herbicides that enter plants through root absorption, such as atrazine, diuron, etc. Injuries caused by inhibitors such as atrazine.

Plant growth regulator EM spray.

When crops are damaged by hormonal herbicides such as 2,4-D butyl ester, 2-4-methylchloride, chlorpyrifos and chlorpromazine, or by the internal addition of conductive herbicides and herbicide residues from previous crops, seedlings mainly show yellow leaves and white burnt spots. Since dimetone is an inhalation-free contact herbicide, after minor damage to the drug, the crop may slowly grow new leaves in about a week and gradually return to growth, which affects the symptoms of herbicide insecticide damage: first, starting from the roots, there are few root systems, the roots become black and necrotic, starting from the leaves of the heart, the leaves and young leaves of the heart turn green, yellow, twist and die along the veins, and the leaves have brownish-yellow spots on the leaves.

Plants can be unusually overeaten or sprayed repeatedly to cause damage to the drug. The lower part of the leaf rots, and then the old leaves turn yellow. 2.

It is a grass herbicide (e.g., Natchijing, Gram Grass, Silversand, Cover Grass may have short buds, stunted growth, and dark green leaves. Drugs derived from cell growth inhibitors such as flularin, shitianbu, and rhubarb and other herbicides.

If the leaves and stems show symptoms of hormonal damage, the petioles are curled and the leaf margins are curved, and field management is strengthened to promote the early and rapid growth of seedlings. When the damage caused by exposure to herbicides is mild, it usually recovers on its own; It can enhance field management, tillage, soil release, fertilization and water, while spraying 1% 2% urea on the leaves. Slow growth.

Luminaries may recover within a week, and heavy luminaires will die. Atrazine poisoning symptoms III.

What are the symptoms of crop damage caused by herbicides? Plant growth regulators: Crops are affected by hormonal herbicides, methyl chloride and chlorpyrifos.

Cultures are mostly yellow leaves and white burn spots. Since dimentethone is a contact herbicide without inhalation TEM, the crop can slowly grow new leaves within about a week after a slight damage to the drug and gradually resume growth, influencing and causing damage to the drug by tarong, or damage caused by inhalation of a conductive herbicide and manifestations of damage caused by the previous crop herbicide: from the plant's point of view, first, the plant detects that the nucleus begins to deform and the growing point of the crop begins to turn.

The brown leaves lose their yellow, green, and vertical, and the new heart leaves are usually purple or yellow, curved longitudinally! For example, strengthen the management of oxazole paddy fields and sprinkle enough water to promote the absorption of a large amount of water by maize roots, so as to reduce the concentration of herbicides on plants, reduce the damage caused by drugs, appropriately increase the depth and frequency of exchanges, improve soil aeration, and promote the application of herbicide residues in crops.

Leaf spot symptoms caused by chemical fertilizers are similar to those caused by contact herbicide deficiencies, pollution and overfertilization, especially nutrient, sulphur dioxide, ozone, C12 and other pollution, as well as herbicide deficiencies, which can form white spots on the leaves of harmful plants, which turn brown quickly after locust clearing. This is the damage caused by damaging herbicides. Leaf tissue (spray of stems and leaves after sowing) or white fig pieces and small white spots at the base of the leaf veins of the average brown fig.

Substances that are harmful to cell membranes, such as burning weeds, can turn yellow on the newly grown leaves of cereals and herbaceous plants, rot at the base of the leaves, and then turn yellow on the old leaves.

It is a regulator of the growth of grass herbs (e.g., Najiajing, Jinghua, Jingyin, Gecanon, etc.), selectively killing large-leaved weeds, but they can also disrupt the growth of grasses and broad-leaved plants. Obvious defects may occur in roots, stems, leaves, flowers, and ears, and the typical symptom of damage caused by long-term use of herbicides is deformity; If the onion leaves shrink and the stems and petioles bend, it is difficult to drive, the symptoms of pesticide damage persist for a long time, are affected in the early stages of crop growth and remain in the final stages.

Marine bioactive substances, cell membrane homeostasis substances, and disease-inducing resistant substances.

My wheat was beaten with corn and weeding yesterday.