There are many weeds in potato fields, how to weed potato fields?

After the potatoes are planted in the field, the surface of the box is covered with plastic film, and the soil is pressed on the edge of the plastic film to prevent the wind from blowing up the soil. Covering the surface of the box with plastic film is not only conducive to preventing the growth of weeds, but also can increase the soil temperature and accelerate the germination and growth of potato seeds. The base fertilizer should be applied to fully rotted farmhouse manure, and try to prevent it from carrying unkilled grass seeds into the soil, so as to inhibit the ** of some weeds and reduce the pressure of hoeing after the emergence of potatoes.

Herbicide spraying of weeds in the field at the seedling stage of potatoes is an effective method of weeding, as long as the right medicine is prescribed and scientifically sprayed, herbicide control of weeds will have twice the result with half the effort. Below, we discuss the weeding methods of potato seedlings separately.

The surrounding of the potatoes is roughly busy shoveling, this is the first time to shovel potatoes, and then put on the potato ridges on the back, see the drought on the water, and wait for the potato seedlings are all out, the seedlings are bigger, just pull out the rest, leaving only a seedling full of praise, in my rural hometown in Gansu. When weeds grow in the potato field, it is enough to remove and pull out the grass with a simple hoe. It seems that this method is the simplest and most straightforward and effective.

Note that when the potatoes bloom and the potato seedlings are connected together, people cannot go to the field to weed, and no matter how much grass there is, they cannot be removed. If the weeding is removed, the potato seedlings will be damaged, resulting in the potato seedlings not being vigorous and reducing the yield. Potato seedlings, weeds in the alley, can also be sprayed with special hoeing agent for potatoes, after half a month, the weeds are not dead and hoeed, and the weeds are hoeed after the summer harvest, and the potatoes are included in the three dogs, which is set as a bumper yield.

Plant potatoes with plastic film, seedlings out of the seedlings buckle out of the plastic film, with the soil bar that mouth cover, so that the grass can not come out of the film, weeding is basically manual hoe hoe grass. When hoeing potatoes, choose to do it when there is a big sun on a sunny day, so that after the weeds are hoeed, they will wither after being exposed to the sun, so that the weeds will not regenerate roots. Only when the potatoes are just planted, they can be sealed with sealing spray, so as to save labor costs.

Potato hoeing after emergence, some numb, chemical hoeing can only hoe the sharp-leaved grass, however, broad-leaved weed potatoes after the emergence of chemical hoeing can be used, can only be manually hoeed. If you want to hoe the grass scientifically, you can only use the sealing spray to seal the potatoes just after planting, so as to save labor costs.

When weeding, be sure to use a hoe to pull out all the weeds, and never hurt the roots of the potato.

The tillage operation is mainly carried out at the budding stage of about 10 cm in height, with the purpose of loosening the soil in the ditch, removing weeds in the ditch, and cultivating the soil. In mechanized potato planting, cultivating is a very important part of potato field management.

At present, the agents that can be used for potato soil sealing and weeding include dimethylpentaline, metolachlor, acetochlor and other single agents, as well as ethoxyflurane, protochlor, promethazine and other compound preparations. In addition, butachlor, chlorpromulone, and other chemicals can also be used for closed weeding in greenhouses or plastic film potato fields. Acetochlor, butachlor, and metolachlor are amide herbicides.

They have strong activity in high temperature and high humidity environments, and the root system has a large amount of drug absorption, which is prone to drug damage. This issue should be taken into account when using metolachlor in potato protected areas (metolachlor has a good control effect on potato grass and broadleaf weeds, especially on sandy soils with very low organic matter content. The advantage of metolachlor over metolachlor is that it has a higher control effect on broadleaf weeds.

<> potato mulching cultivation, it is difficult to carry out intercropping and weeding after emergence. If there are too many weeds in the field, a lot of nutrients and water in the soil will be consumed by the weeds. In severe cases, the plastic film will be lifted up, affecting the normal growth of potatoes.

Therefore, when mulching film, the weeding effect of plastic film should be fully exerted. When mulching, the mulch should be taut, compacted, paved and covered tightly. The film is close to the ridge surface and inhibits the growth of broadleaf weeds.

After the use of amide herbicides in the last crop, such as dur (metolachlor). If the potatoes are planted in the next crop, the emergence of potatoes will be slow. Potato seedlings that can be unearthed are also stunted and deformed.

The leaves cannot form a whip or cup. In severe cases, there is a lack of seedlings and ridges, and the growth is very irregular. The reason is that excessive use or residual metolachlor in the soil can inhibit the growth of potato roots and shoots.

Because it weeds on non-arable land, there are fewer safety considerations. As long as herbicides are used, the target can be eliminated. For example, 41% glyphosate, glyphosate, glyphosate, diquat, and other non-selective herbicides can be used.

However, in recent years, some weeds have developed resistance due to the annual use of herbicides, and some malignant weeds are not easily removed by non-selective herbicides. Sometimes, non-selective herbicides are not as sensitive to special objects as specialized single agents.

Try to choose one that is not harmful to potatoes, and pay attention to the composition of the herbicide, and you should also pay attention to the effect of the herbicide.

Herbicides that are not harmful to potatoes should be chosen, and care should be taken to choose herbicides with a relatively light dosage, as well as instructions for the use of herbicides.

Try to choose the one with less damage, but also choose the smallest one, try not to hurt the farmland, but also pay attention to the scope of spraying, and pay attention to the time of spraying.

Post-emergence chemical weeding of potatoes has been widely used, but the problem that plagues farmers is that post-emergence herbicides will cause different degrees of pesticide damage to a greater or lesser extent (for example, the current more common herbicide formula is: azinone + sulfsulfuron + quinoxalin).

Shallow weeds begin to germinate in about 5-7 days, at this time, weed control can be carried out before seedlings, with the pesticide ethoxyfluorfen control, 80-10ml per mu, 100kg with water, sprayed 5-7 days after garlic sowing, or with pendimethalin, 200ml per mu, the ground is covered with plastic film, the plastic film has a great effect, which can not only keep warm, improve soil temperature, but also keep soil moisture evaporating quickly, and can also use temperature difference to form soda and keep the soil moist. The mulch film also keeps the air out, making it impossible for weeds to survive. Large-scale cultivation of garlic is best covered with mulch.

In our Enshi area, we mainly choose corn, rice, potatoes, sweet potatoes and four types of land for garlic planting. After one year of cultivation and multiple weeding and ploughing, there are relatively few weeds in the soil, which reduces the growth of weeds during garlic planting. And the results are fast, too.

But I'm not in favor of using herbicides for weeding, and I'm a bit small-farmer minded, but I've always insisted on doing it. I hope that I will insist on not using herbicides alone, and more people will participate in the future, so that everyone will not use herbicides, and the land that we can survive on will be restored to its former soil quality.

Therefore, it cannot be mixed with soil after medication. (5) 50% promethony suspension agent per mu with 80120 grams of spray before seedlings after sowing on the soil surface. The agent has strong mobility in the soil, and the sandy soil with low organic matter content is not suitable for use.

Promote the loss of agents and reduce the efficacy of drugs. One of the reasons why the dosage of pesticides in Pizhou, Jiangsu Province is 1 times higher than that of the surrounding areas, is that the film is covered with medicine first and then watered. There are few examples of pre-sowing drugs in garlic fields.

After the garlic field water is drained, immediately spray the garlic field with a special herbicide for garlic and then cover the garlic with mulch. In addition, after the garlic sprouts, the garlic teeth must be picked out by hand, so when picking garlic sprouts, the weeds that have not been removed from the garlic field can be removed by hand. That is, after the first watering of garlic cuttings, herbicides should be sprayed, and some people in some of the garlic fields planted in Gansu Province call it "spraying that does not allow grass to grow".

It is also very vivid, so at this time, after the injection, due to the effect of the drug and the temperature after entering the winter.

It should be sprayed with pesticides in the land, and secondly, these weeds should also be pulled out by manual weeding.

We can do weeding directly with a hoe, or we can sprinkle some herbicide on the side, or you can use equipment to weed.

Weeds can be removed using professional herbicides, hoes, or hand-pulled.

In fact, scientific weeding, the effect of the stove tour with artificial weeding is better, but it is too tiring, it is recommended to use the corresponding herbicide, weeding is better, but the dose of herbicide can not be put too much, otherwise even potatoes will suffer.

If you want to use scientific weeding, you should do a good job of prevention and control work when sowing, and you should also use some herbicides prepared by traditional Chinese medicine; It must be eaten in moderation, avoid the consumption of the cavity of the socks, so as to cause a series of damage to the potatoes, and should also be avoided when the wind is strong, and must pay attention to the ratio of the liquid medicine.

Artificial weeding can be carried out, organic chemical Chinese medicine preparations hoe weeds and cover potatoes, and herbicides can be used for weeding. The soil should be kept moist, and weeding should be controlled with drugs in the hot season when the temperature is low, and when spraying with drugs, it is necessary to call dust to ensure that the plants are ventilated, and let people intervene to avoid the growth of weeds.

Sweet potatoes are nutritious, contain a variety of vitamins and trace elements, and are known as "longevity food". In many parts of our country, there are many problems in the process of sweet potato cultivation, and weeds are one of them. Too many weeds in the field will breed pests and diseases, and at the same time compete with sweet potatoes for nutrients, so it is particularly important to use scientific methods to control weeds in the field.

So for farmers to come to rock trembling, in the process of sweet potato planting, how to deal with the problem of weeding scientifically? The fields are ploughed deeply.

<> before the sweet potato was planted, the weeds in the field began to sprout as the temperature gradually increased. At this time, the field is turned deep and the newly grown weeds are transferred to the deep soil, destroying the growth environment of weeds and achieving the purpose of inhibiting the growth of weeds. Spray clogging.

In sweet potato fields, the germination of new weeds can be effectively inhibited by deep ploughing, application of basal fertilizer, and application of sealant after ridge formation. Weeding with black mulch. After land preparation, the ridges are covered with black mulch, which changes the local soil environment.

The soil is covered by high temperature, high humidity and no light environment, so that the germination of weeds is inhibited, and the purpose of removing coarse or corrupted weeds is achieved. The black mulch also plays a role in heat preservation, which is very beneficial to the growth of sweet potato seedlings. Tillage and weeding.

Intercropping before ridge weeding is thorough, safe and harmless. Moreover, during this period of weeding and tillage, it can also play a role in breaking the soil and compaction, increasing the permeability of the soil, which is conducive to the later expansion of sweet potato. Soil compaction caused by early watering and fertilization will reduce the air content in the soil and inhibit the root respiration of sweet potato, thereby affecting the uptake and utilization of nutrients in the soil by sweet potato roots.

In addition, cohesive soils and highly compacted soils can affect the development of potato chips, leading to symptoms of surface cracking.

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First of all, we must do a good job of draining the land, and secondly, spray drugs to prevent and control.

When the sweet potato starts to grow, spray the soil with some herbicide, and when the grass grows some, use a lawn mower to cut the straw.

Usually be sure to spray more herbicides, and then be sure to carry out sufficient sunlight, clean up stagnant water in time, and pay attention to ventilation.

Sweet potato belongs to the tubular flower order Spiraceae, rich in protein, starch, pectin, cellulose, amino acids, vitamins and a variety of minerals, and has the reputation of longevity food. Sugar content of 15--20%, anti-cancer, protect the heart, prevent emphysema, diabetes, ** and other effects, traditional Chinese medicine called it a good medicine, many farmers have begun to develop sweet potato planting. As we all know, planting cash crops, grass damage is a very headache, and if it is not done well, it will seriously affect the yield.

Regarding the problem of sweet potato weeding, the most trouble-free thing is still that the chemical weeding has been sprayed twice last time, and the grass condition of the potato field has been observed for one and a half months, and there are solid weeds on both sides of the bottom of the ditch and at the bottom of the ditch. I'm sorry, but glyphosate can be served with laundry detergent. There are no weeds at the bottom of the ditch on both sides of the ridge.

At present, the planting area of the country is about 6 million hectares. The main production area is the North China Plain. It is cultivated in a small area in other places.

Weed species in sweet potato fields vary from region to region. For example, the common weeds in our area are horsetail, dogtail grass, cow tendon grass, barnyard barnyard grass, snakehead intestine, hemp, Xanthella fungus, quinoa annual grass weeds and broad-leaved weeds. It can be cleaned at one time, saving labor and time.

It is highly safe for the root field and is not easy to harm the seedlings. The dosage is low, the application is convenient, suitable for long-term use, and a special ternary asymmetric chemical structure is adopted.

Therefore, when there is time, it is generally used to hoe the grass and cultivate the soil. The first time is after 5 days of sweet potato planting, and the second time is after 7-10 days of weeding for the first time. The first time is 5 days after the sweet potato is planted, and the second time is after the first weeding 7-10 days.

Generally speaking, if you choose a piece of land to grow sweet potatoes, it is best at the end of each year, because the crops have been taken back and there are actually many weeds in the field, so you can spray herbicides at this time.