Anyone who has grown vegetables may have a feeling, that is, the weeds in the vegetable garden always outgrow the vegetables. It is often the vegetables that you have carefully tended for a long time that wilt and cannot grow taller. , but the weeds that no one cares about can grow up to half a person's height, and their vitality is still very tenacious. If you remove them once, they will grow up, and once you remove them, they will grow again. It is really like a wildfire that cannot be burned. After all, the spring breeze blows and grows again. Here today, I would like to share with you some knowledge about weeds and control methods to help reduce the harm of weeds in your small vegetable garden.

1. What are the dangers of weeds in vegetable gardens

1. Competing with vegetables for water and fertilizer

Most weeds are extremely vigorous and reproduce very quickly. They are fast, have strong root systems, and have a strong ability to absorb water and fertilizer. They will compete with vegetables for water and fertilizer, threatening the normal growth of vegetables.

2. Compete with vegetables for growing space

Some weeds have strong root systems and criss-cross underground, seriously affecting the root extension of vegetables. Some weeds are taller and block vegetables. The sunlight seriously affects the normal photosynthesis of vegetables, and some weeds are lush and leafy, seriously compressing the growing space of vegetables.

3. Spreading diseases

Many disease germs, such as powdery mildew, anthracnose, gray mold, etc., as well as the eggs of pests, will hide in weeds for the winter, until the environment is suitable in the coming year. When the time comes, they will come out again and continue to harm the normal growth of vegetables.

2. What are the common weeds in vegetable gardens

In northern areas, common weeds in vegetable gardens include foxtail grass, chicory grass, broom seedlings, white mugwort, Artemisia annua, gray strips, wild oats, etc.

3. Prevention and control methods of common weeds

1. Completely remove the residues of previous weeds

There are many types of weeds and strong vitality. If you are careful, weeds will form. Therefore, before sowing in the vegetable garden, the remnants of the previous weeds must be completely removed and taken out of the field for destruction to prevent these remaining weeds from spreading and causing disaster.

2. Apply decomposed farmyard manure

Farmyard manure is generally animal excrement, because animals such as cattle and sheep eat grass, and their excrement may contain If the digested weed seeds are applied to the fields before they are decomposed, they may cause the spread of weeds. However, fully fermented and decomposed farmyard manure can kill some of the weed seeds contained in it and reduce the risk of weeds entering the vegetable garden. probability.

3. Crop rotation

Some crops are easy to breed weeds, and some crops will curb the spread of weeds because of their strong vitality. Therefore, proper crop rotation can reduce the breeding of weeds to a certain extent. Another point is that this crop may be prone to breed one kind of weed, and that kind of crop is prone to breed that kind. If a crop is planted in one place for a long time, the weeds it breeds will be difficult to control, and the weeds it breeds will be difficult to control. Reasonable crop rotation can effectively avoid this situation.

4. Master the timing of weeding

The timing of weeding is also very important. Generally speaking, weeds must be removed before they mature and set seeds. If you wait until they mature, Weeding after the seeds have set will easily cause the seeds to fall into the soil, causing a new round of weeds to breed. Another is to try not to weed in rainy weather, because if you weed manually, the weeds may take advantage of the good soil moisture on rainy days and resurrect. If you use chemical agents to remove weeds, rainy days will reduce the intensity of the chemical agents. Medicinal efficacy. Manual weeding can be done at noon, when the weather is hottest. Although it is harder for people at this time, the weeding effect is good, and the hoeed grass will soon be burned to death in the bright sun.

5. Deep plowing of the soil

Deep plowing of the soil can, on the one hand, plow the roots of weeds to the surface of the soil, allowing the roots to break away from the soil and die of dehydration or exposure to sunlight. Sun-killing, on the other hand, can push weed seeds deep into the soil, making it difficult for them to break out.

6. Chemical control

If the weeds are still difficult to control after taking the above methods, we can also use chemical control methods to eliminate weeds, such as using grass remover. , the grass is not green, and drugs such as Letong are used for prevention and control. Of course, for vegetable gardens, it is possible not to use chemical control methods, but try not to use them. Firstly, chemical control methods will cause sequelae such as soil acidification, and secondly, some drugs may affect the normal growth of vegetables.