What are the effects of planting crops and herbicides on the soil? Do you know?

Herbicides that kill weeds without harming crops are known as selective herbicides. These herbicides can sometimes kill only one or a group of field weeds and have little effect on the plants planted in the field nursery. If the mulch film can be used or is stable enough to be used in nurseries, it can only kill monocotyledonous weeds, mainly wheat, without harming nursery plants.

Dürr and Jingwen can be applied at the seedling stage of weeds, as long as the concentration is appropriate, it is relatively safe for seedlings and other crops. Of course, the selectivity of herbicides is relative, and selective herbicides can also be used as non-selective herbicides after changing the dosage, application period and application method. Passed"Time difference selection"with"Difference selection"Non-selective herbicides can also be used safely during the growth period of seedling crops.

<> use of herbicides can really save time and effort. But while saving time and effort, he also caused harm. Spraying herbicides, there will be a large amount of herbicides sprayed on the ground, trees, and farmers will absorb.

This leads to the destruction of trace elements, the loss of vitamins. Herbicide residues on the ground can also cause the roots of the fruit tree to grow, which slows down the growth rate of the fruit and affects the growth of the fruit. As many fruit growers complain, the fruit grows too small and the tree does not grow new branches.

This is the effect of herbicide residues on fruit trees.

Herbicides also have a big impact on crops, like corn, soybeans, and the like. Due to the residue of herbicides, it will lead to the phenomenon that the crop does not grow vigorously and the fruit is not full. There will be no harm in the short term after human consumption, and it will have unimaginable consequences over time.

But now the incidence is very serious, mainly for dietary reasons.

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After spraying herbicides in farmland, a large number of herbicides that are not absorbed by weeds remain in the soil of farmland, and rural substances will absorb these herbicides and cause serious damage to the tissues of crops, and the lack of function leads to a lot of normal photosynthesis and respiration can not be carried out normally, resulting in poor growth and development of crops, and the occurrence of large-scale yield reduction.

It will cause the soil to be toxic, it will lead to a decrease in the acidity and alkalinity of the soil, it will lead to a decrease in the nutrient content of the soil, and it will also cause the soil to become poor, which will lead to the soil without nutrients. Of course, I know that these methods are a relatively big damage to the soil.

I know that planting crops and herbicides will increase the acidity of the soil, which will lead to poor soil permeability, which will affect the soil quality, make the soil hard, and not conducive to soil loosening.

Weeds are known to be tenacious, and the first priority for farmers is to remove weeds, otherwise they will eat all the fertilizer and nutrients in the field. Weeds in the field grow the fastest, and they grow again after a while, regardless of whether you have cultivated the land or sprayed the pesticide before planting.

Weeds are adaptable, as long as there is soil it can grow, the growth of weeds directly affects the crops, if the crops are not removed when planting, the yield and quality of the crops will be greatly reduced. What can be done effectively and quickly weeding in an overgrown crop field?

First, you can buy a special weeding machine manual weeding is the longest used method, although the weeds can be cleaned up very clean, but this method is particularly slow, and labor intensity,.

You can go to the agricultural material store to buy a lawn mower, in addition to the clean and high efficiency, there is no impact on the citrus tree and the soil, its price is also quite appropriate, generally six or seven hundred yuan a piece, good only more than a thousand. With a lawn mower, not only is the weeding efficiency high, but also the person is relaxed, and there is no fear of overgrown weeds in the field.

Second, the use of herbicides manual weeding is not only low efficiency but also hard, now there are a lot of herbicides on the market, the effect of weeding is very good, and it is also very convenient to use, can play the role of rapid weeding, greatly reduce the workload of farmers, but also has little impact on crops, and the effect of weeding in a large area of rice field or herbicides is better.

3. Laying mulch.

Farmers who plant watermelon, muskmelon and corn will spread a layer of black mulch in the ground, which can not only keep warm and moisturize, but also have a good effect on inhibiting the growth of weeds.

For example, the nutrients in the watermelon field are sufficient, and it is especially easy to grow grass, and if you use manual weeding or herbicide to control the weed, it will affect the growth of watermelon. If the mulch is covered when planting, no weeds will grow during the whole growth period of the watermelon, which not only greatly reduces the workload of the farmer, but also does not affect its growth.

Summary: Weeds are the natural enemies of crops, and only when weeds are removed will crops grow well.

Hope mine can help you!

The best way is to raise some ducks, let the ducks go to the field to eat these weeds, you can also sprinkle some weeding pesticides, which are very good choices.

The first is to choose the way of manual weeding, and people must be particularly meticulous when pulling weeds, if the scale is relatively large, you can use mechanized methods.

You can apply pesticides, put pesticides on the grass, don't hurt the crops, so that the grass can die completely.

Now that science and technology are very developed, the previous mode of manual weeding has long been abandoned, and herbicides can be used for weeds, which saves time and effort.

Planting crops in a weed field is the best way to get rid of weeds.

The amount of herbicide entering the weed body is limited, and the absorption is insufficient, which affects the weeding effect, and the corn seedlings sprayed at high temperature are also prone to pesticide damage. In order to ensure the herbicide effect, the production of more than one more use and a variety of herbicide mixtures to improve the control effect. Some growers think that herbicides are fake, and go to agricultural stores to theorize, or even fight, but in fact, most of them are caused by incorrect herbicide use.

There are many kinds of special herbicides for <> corn, corn seedlings are below 30cm, and they can be sprayed on corn seedlings harmlessly, which is harmless to corn, indicating that the weeding effect is general. Anything higher than 30cm can be used, and it is best not to spray it on the kind of corn seedlings. There are many herbicides used in corn fields, because various weeds are often mixed, and the situation occurs in different places, so it is necessary to choose herbicides correctly according to local conditions, generally speaking, corn before seedlings after sowing.

Peanut field as far as possible after seven o'clock in the evening and wait for the peanut leaves to close, and then hit, corn field on the corn seedling herbicide, add a safe dosage form, and determine that it is a regular manufacturer's products to the dealer to buy herbicides must ask how high the seedlings can be played, what environment can be used, when to play the best, the current herbicide varieties sold by dealers are divided into herbicides and selective herbicides. Herbicides such as glyphosate, diquat, etc., as long as they are sprayed on plant leaves, whether they are crops or weeds, will be killed.

Closed herbicides are better and can be sprayed before the seedlings are drilled out of the ground and if the ground moisture is permitting. If it is operated between crops, the first is to select the drugs used in a targeted manner, and only the most primitive methods can be used to pull out the grass and oil silk grass in the lotus root field. Although the work efficiency is low and the labor intensity is high, the effect of weeding the lotus root field is quite good.

When the lotus root palm high umbrella canopy is applied again, the above fertilizer weight is applied again, this fertilization should be paid attention to, do not scatter the fertilizer on the canopy surface of the water surface, and the canopy is completely closed and the field does not grow weeds.

Be sure to follow a certain proportion, not more or less, when hitting to leave the roots of the plant, so as not to harm the plant, aim at the weeds, and choose the right medicine.

What should be done is to buy some herbicides that do not do any harm to the seedlings, so as to avoid causing damage to the seedlings, and there are now these pesticides that specifically treat some weeds.

These herbicides can be applied to the top of the grass so that the herbicides will not hurt the seedlings, and they will also completely ** weeds.

Be cautious with herbicides, spray herbicides on weeds, not seedlings.

Hello dear and happy to serve you: the manual capture method can grow crops without pesticides. Fertilizing insecticides is to fertilize crops to kill crop pests.

This is a new method of insect control and insect control that has been popularized and used in recent years. This method can not only prevent insects, but also have the effect of fertilization, and do not kill natural enemies of insects, and do not pollute the environment. Here's how:

1. Phosphate fertilizer insecticidal cotton bollworm is most afraid of phosphorus in the egg stage, and immediately escapes when it sees phosphorus. According to this characteristic, the superphosphate soaking liquid of 2 can be used to spray the foliar surface of the cotton, leaving 1 row every 5 rows without spraying, so as to drive the cotton bollworm to lay eggs intensively, and then concentrate on extermination. Another characteristic of cotton bollworm is that as soon as it reaches the acid secreted by cotton, it swarms on it to lay eggs.

At this time, if sprayed with 2 superphosphate solution, chemical reaction occurs with oxalic acid and folic acid secreted by cotton, which can harden the eggs of cotton bollworm, so that cotton bollworm larvae can not break the shell and die, so as to achieve the purpose of reducing the damage. 2. Nitrogen fertilizer insecticide with 2 urea solution, or 1 ammonium carbonate solution, or ammonia solution, spray outside the root when the pest occurs. Because these three nitrogen fertilizers have strong volatile panicle destruction, they have a certain fumigation and corrosive effect on pests, especially for the prevention and control of some small and weak endurance pests such as red spiders, leaf mites, thrips, etc., and the effect is particularly good.

If the hermit fruit is not used properly, preparing the herbicide yourself may have a negative impact on crop growth. The main ingredient of herbicides is glyphosate, which works by killing the roots and stems of plants to remove weeds. However, glyphosate is also toxic to crops and can cause damage to the leaves and stems of crops if used incorrectly, affecting the growth and yield of crops.

In addition, if you don't mix your own herbicides in the right proportions or mix other chemicals, you can have an undesirable reaction. Therefore, when using herbicides, be sure to use them according to the instructions in the instructions, or choose herbicides produced by regular manufacturers to avoid negative effects on crop growth.

Can crops be grown after using pesticides and herbicides in a large area?

Dear, after using pesticides and herbicides in a large area, you can still grow crops. However, it is necessary to pay attention to the following aspects: 1) If you have used pesticide herbicides and want to plant crops, it is recommended to wait for a period of time after using pesticides to allow the pesticide residues in the soil to degrade to a safe level.

2) In general, it is recommended to wait at least one month to ensure that the pesticide residues in the soil are degraded to safe levels. During the waiting period, the following measures can be taken to promote the degradation of pesticide residues in the soil:1

Increase soil aeration: It can increase soil aeration by ploughing, loosening soil, etc., promote microbial activity in the soil, and accelerate the degradation of pesticides. 2.

Increase soil organic matter: You can add well-decomposed organic matter, such as humus, decomposed compost, etc., to increase the content of soil organic matter, promote microbial activities in the soil, and accelerate pesticide degradation and cultivation. 3.

Increase the number of soil microorganisms: Microbial agents, such as Bacillus subtilis, can be added to increase the number of microorganisms in the soil and promote the degradation of pesticides.

Farmers planting crops is also an investment, hoping to invest less money, less labor, reduce costs, and increase profits are what every farmer thinks when planting crops. In the production process, the management of crops is both simple and complex, in addition to preventing pests and diseases of crops; An even more terrible and troublesome job is removing weeds from the field. In general, weeds in the field are more likely to grow and sprout than the crops planted.

In this way, herbicides can be used without manual labor as much as possible? There is some truth to this

How do you get rid of weeds around the crop plants?？Scientific weeding can reduce the investment of money and labor. Frequent use of chemical herbicides has a certain impact on the growth of crops and the soil!

Before planting crops, the grass seeds in the soil can be medicated and sealed according to the products planted at the same time as the land preparation, such as acetochlor, butachlor, etc；We can also use weeding mulch, if we have the conditions to use weeding mulch, it is still a physical prevention method of agriculture, which can not only inhibit the growth of weeds in the field, rapid growth, but also can keep the soil warm, moisturize and fertilizer. In this way, no tillage and grass are eliminated, and a lot of labor or herbicides are reduced. Only a small part of the grass in the field ditch remains, and depending on the growth of the crop, the grass can be sprayed with chemical herbicides.

Of course, it is still unavoidable that farmers should use manual weeding when planting crops. In the early stage of plant growth, the plants are dwarf, and some weeds are already taller than the crops, so the weeds around the plants must not be pulled manually. At this time, if you use herbicide spray, the plants of the crop may also be stained with herbicides, and in the end, the gains outweigh the losses.

It is well said that farmers must use herbicides when planting crops, after all, using herbicides to weed is time-saving and labor-saving than manual weeding, and the cost is much lower, and the advantages outweigh the disadvantages. However, the use of herbicides, most of which require the use of crops once per season, is recommended to be used once per season, and frequent spraying will definitely affect the growth of crops and cause soil compaction.