Is there any way to keep the land from growing weeds?

It may not be realistic to say that the farmland is free of weeds, after all, grass seeds are inevitably carried in the field or insects are carried into the field, even if the soil in the field is autoclaved.

There is also the possibility of alien birds carrying weed seeds, so we can only reduce the weeds as much as possible, and it is really difficult to completely eliminate them.

When it comes to not growing weeds, herbicides may come to mind first.

For example, there are biocidal herbicides, which mean that you can kill green plants whenever you see them, such as paraquat.

After spraying in the field, it can be said that there is no grass growth, but such herbicides should be staggered with the sowing period of the crop to avoid causing damage to the crop. Moreover, this kind of herbicide is only effective for growing green plants, and can grow for seedlings that are sent out later, which means that weeds will inevitably occur in the later growth stage of the field.

Secondly, we can also reduce weeds in the field by subsoiling. Through deep ploughing in the field, the seeds in the field are buried in the ground and cannot be unearthed, so as to achieve the purpose of reducing weeds in the field, but this is not a one-and-done solution, after all, there will still be weed seeds or roots in the soil, and as long as they exist, weeds will grow. However, this method can still greatly reduce the amount of weeds in the field.

Of course, the most traditional way is to weed in the field in time, once the grass is grown in the field in traditional agriculture, it is time to weed, but in recent years, with the large-scale application of herbicides, people have gradually given up the traditional way of manual weeding, and the planting will become more economical.

Finally, it is unrealistic to say that there are no weeds in the field, and now under the premise of field tillage and management measures in place, herbicides can be used to weed, and incidising herbicides can be used before sowing, and selective herbicides can be selected at the seedling stage or plant growth stage after sowing. Of course, everything is based on scientific field management.

The chemical weeding method of cultivated land will generally grow a little, only if the grass does not grow for a period of time, and then the grass will grow again, because the contact between the land and nature and the bacteria decomposed by the plants will grow grass

First, remove the grass seeds from the land. We all know very well that if weeds need to grow, there must be seeds and an environment to grow, and if we can remove weed seeds, we can naturally reduce the growth of weeds.

Second, timely deep ploughing for manual weeding.

Thirdly, the land is mulched with straw or mulch.

Use of pesticides, biological treatment. At present, most of the pesticide weeding is still relatively effective, but the residue may also pollute the land, and the biological treatment is more environmentally friendly, but the awareness of environmental protection in rural areas is poor, and it is difficult to popularize.

I don't think there's a way to keep weeds from growing on the land now, because some grasses are very stubborn and grow even in droughts, so they have to be pulled out in time.

1. Weed method: Weeds are very fecund, and the weeds in the courtyard have just been pulled out, and they have grown everywhere in a few days. In this case, do not pour out the brine that usually pickles duck eggs or pickles, and splash the brine on the weeds during the weed season, and three or four times can stop the growth of weeds.

2. In addition, the water used to boil potatoes can also remove weeds from the yard or aisle. In addition, the use of bleach water to control weeds is also very effective. The method is to sprinkle water on the ground to be weeded to make the land soaked, and after 24 hours, water it with bleaching powder, and the weeds will soon wither and die.

You can remove the grass from the land first, then sprinkle lime on the land, and turn the soil frequently, so that the land does not grow grass.

If you have used herbicides in the land and then plant vegetables that don't like to grow, there is no way.

It is recommended to replant after the residue period.

Common vegetables are: cabbage, spinach, etc.

Spinach cultivation techniques.

Seeding time. Spring spinach can be sown when the temperature rises above 5 °C after the beginning of spring, March is the appropriate time for sowing, summer spinach is sown in stages from May to July, autumn spinach is sown from August to September, and overwintering spinach is sown from mid-October to early November. Spinach usually germinates in 2 to 3 days after sowing.

Prepare the land for furrowing. Choose loose and fertile, water and fertilizer retention, and good drainage and irrigation conditions. 4000 kg of rotting organic fertilizer per mu of land preparation, 40 kg of superphosphate, leveling fine, winter and spring should be done high furrow, summer and autumn should be done flat furrow, furrow width to meters.

Sowing seeds and raising seedlings. Spinach plots are generally sown. Summer and autumn sowing is to soak the seeds in water for 12 hours 1 week before sowing, put them in a well or in a refrigerator or refrigerator for about 4 hours for 24 hours, and then promote germination under conditions of 20 to 25, and sow seeds after germination in 3 to 5 days.

Dry or wet seeds can be sown in winter and spring. 3 to kg per mu are sown.

After pouring the bottom water on the furrow surface, sow the seeds, lightly rake the topsoil with a tooth rake, so that the seeds are sown into the soil, and cover the furrow surface with a layer of plant ash.

After sowing in summer and autumn, it should be covered with straw or covered with a small arch to prevent high temperature and heavy rain. Frequently keep the soil warm and moist, 6 to 7 days can be seedlings, winter sowing temperature is low, then cover the furrow with plastic film or shade net insulation to promote the emergence of seedlings, after the emergence of seedlings.

Field management. After the autumn spinach has real leaves, it is poured with farmhouse manure water once; After 2 true leaves, combine seedlings, weeding, top dressing first light and then thick, and apply more farm fertilizer and water in the early stage; Top dressing 2 to 3 times during the peak growth period, 5 to 10 kg of urea per mu each time.

The soil remains moist after winter spinach planting. When there are 3 to 4 true leaves, the water should be controlled properly to facilitate overwintering. For 2 to 3 true leaves, the seedling spacing is 3 to 4 cm.

According to the seedling condition and weather, water and fertilizer are applied first, and farmhouse fertilizer and water are the mainstay. Frost and ice and snow weather should be covered with plastic film and shade nets for insulation, which can be covered with small arches. After the beginning of spring, choose a sunny day to apply farm fertilizer and water to prevent early sprouts.

Spring spinach should be covered with plastic film in the early stage of insulation, which can be directly covered on the furrow surface, and the film will be removed after the emergence of the film or changed to a small arch cover, and the small arch shed will be covered by day and night, and the rain cover will be covered by sunshine, so that the seedlings can see more light, refine more seedlings, and time seedlings. Top fertilization water, in the early stage, the farmhouse fertilizer water is applied lightly and diligently, and in the later stage, especially 15 days before harvest, fast-acting nitrogen fertilizer should be applied.

After the emergence of summer spinach, it is still necessary to cover the shade net, cover the shade in the sun, cover it late and cover it early, so as to facilitate cooling and heat preservation. Watering at the seedling stage should be done in the morning or evening with small water and frequent watering. After 2 to 3 true leaves, fast-acting nitrogen fertilizer is applied twice. Water should be poured after each fertilization application to promote growth.

You can water it twice, at a time interval of a week, and then turn the soil over and you can continue to grow vegetables.

Because the herbicide will have residues, it will take a certain amount of time, plus the washing of water, so that it will be fine.

It means that the land is polluted, and it will be good to use more herbicides, use more organic fertilizer, and water more in the future.