What should I do if there are too many weeds in the rice field? How to fix it?

with herbicides. There are too many kinds of weeds in paddy fields, which are resistant and difficult to control, and if you want to solve the problem of many weeds in paddy fields, you can solve it by choosing appropriate herbicides.

Let's first learn about the types of weeds, as the so-called knowing oneself and knowing the other is invincible, there are many weeds in paddy fields, including broad-leaved grass, spike grass, sedge, etc. Weed occurrence is different in different regions, and weed resistance is also different. Therefore, there are some great difficulties in the control of rice growers.

Common broad-leaved weeds in paddy fields include: wild cucumber, ducktongue grass, panicle, lotus seed grass, eye grass, etc. Common sharp-leaved weeds in rice paddy fields are:

Barnyard grass, Qianjin, double-spike barnyard grass, horsetail, cow vein grass, barberry, dogtail grass, etc. Common sedges in rice fields include: triangular grass, sweet aconite, etc.

Currently, there are not many herbicides on the market specifically for rice, including benzethuron-methyl, pyrisulfuron-methyl, dimethyl tetrachloride, chlorofluoropyridoxetacetic acid, and methadone for broadleaf weeds. Herbicides commonly used in sedges include dimethyl tetrachloride, pyrazolon, methoxoxide, etc.

In the process of weeding, we should also pay attention to the following three points:

Spraying cycle Different herbicides and herbicides produced by different manufacturers are different (processes), there will be differences in the trial period, some can be used on rice leaves, and some need to wait for 3 leaves to start using, but no matter which herbicide, it is too late, it is not recommended or affect the weeding effect, when they buy herbicides, there are instructions on the label.

Spraying insecticide temperature When the herbicide efficacy is good or bad and the use of temperature also has a certain relationship, if the temperature is too high, more than 35 degrees, the evaporation rate is fast, the weed absorption solution is limited to the herbicide, the weed control effect will be reduced, if the temperature is too low, it is easy to cause the phenomenon of rice damage, if the rice planting area is large, spray dioxaether, the temperature is lower than 15 degrees, not only the efficacy is reduced, the rice is also susceptible to drug damage.

Pesticides should also pay attention to the method of spraying, seemingly simple but knowledgeable, spraying insecticides: the correct operation of the drug also plays a positive role in the efficacy of the drug, one is not to spray and miss the spray, re-spraying is easy to cause injury, the leakage spray can not play a weeding effect; Second, it is recommended to dilute the medicine twice to prevent the unevenness of the liquid medicine in the medicine barrel. Third, do not spray herbicides in windy weather; Fourth, apply herbicides, don't dry the fields too much, etc.

The above are tips and trivia about getting rid of weeds in the rice field, I hope it can help you.

There are too many weeds in the paddy field, this should be done, the weeding of the rice seedling field is flat in the seedbed, the soil is evenly covered, and the seedling field with moderate moisture can be closed and weeded, with the use of pesticides; At present, the chemical weeding technology of rice transplanting field mainly adopts closed weeding, and prochlor is mixed with broad-leaved weeding herbs at the green grass leaf stage 3 to 5 days after rice transplanting.

Some herbicides can be used appropriately, so that some grasses can be better removed and the rice field can be better grown.

It should be done by hoeing, herbicides can be used, or weeding can be done manually.

The agricultural proverb says: good rice is planted, and barnyard grass is planted badly; The barnyard grass is pulled out, and the barn is full of rice. It can be seen that barnyard grass is dangerous in rice planting, because barnyard grass and rice grow in a similar environment, so it grows in large quantities in rice fields.

Why is barnyard grass called barnyard grass, because the word "barnyard grass" is the same as "defeat", which is a weed that corrupts rice. So why is there a lot of barnyard grass in rice fields? And how do we get rid of it?

Here's a brief introduction.

Why is there a lot of barnyard grass in rice fields? 1. The growth environment of barnyard grass is similar to that of rice. Barnyard grass is often found in our rice fields because the environment in which it grows is fairly simple, and the seeds can survive in the soil in large quantities, and as soon as the conditions are ripe, they sprout and grow.

Barnyard grass, like rice, likes to grow in paddy fields.

2. The cultivation method of paddy field is single. We often grow rice, only ploughing the paddy fields in the spring when the rice is planted, and many times, there is a lack of ploughing in the paddy fields in the winter. Or due to the lack of labor, the rice fields are not cultivated in winter.

This provides a good opportunity for the growth of barnyard grass.

3. The prevention and control measures for removing barnyard grass are not in place. Many times, a single drug is used to clear it. Or the improper use of the selected agent, the improper season of spraying agent, etc., many factors cause the removal of barnyard grass is not timely, and over the years, the barnyard grass seeds accumulate more and more.

How do you remove barnyard grass from a rice field? 1. Manual removal. This method is also the simplest and most useful, and does not harm the rice.

The disadvantage is that the demand for labor is relatively large. There is no way to distinguish between rice straw and rice at the seedling stage, when the barnyard grass is tillered, it is very clear that the difference between rice and barnyard grass is that the number of branches of the barnyard grass tiller is more, and the roots are very smooth. So the farmers here in our country will easily discern it.

2. Carry out rotational cultivation of paddy fields. We know that rice and barnyard grass grow in a similar environment, so we can plant rice in the rice field in the spring, and we can take turns planting vegetables, wheat, rape, etc. in the winter. On the one hand, it can improve the utilization rate of the land, and on the other hand, it can also make the seeds of the barnyard grass spoil, and they will not be able to continue to grow in the next year.

3. Removal of chemicals. A few days before planting rice, drain the water in the paddy field, choose sunny weather, and remove weeds from the paddy field with chemicals. The specific implementation method should be determined according to the environment of each place and the choice of agent, and can be asked by the local agricultural department and the drug provider.

Generally. Due to the single way of planting rice fields and the lack of labor, the rice fields are not cultivated in rotation, and there are more and more barnyard grasses. If you want to get rid of barnyard grass, you need a combination of methods to be useful.

First of all, the water in the rice field is released for seven points and three points are left, so that when pulling the barnyard grass, it can reduce resistance, save effort, and also improve speed and efficiency. Hold the stem of the barnyard grass with your hand and pull it up with all your might, and pull it up by the roots to prevent it from growing again. Place the uprooted barnyard grass on the ridge of the field and then concentrate on it, do not leave it in the rice field, or step directly into the soil layer of the rice field with your feet.

The barnyard grass in the paddy field, divided into two kinds, one is the water barnyard grass, one is the rice barnyard grass, the most difficult to treat is the rice barnyard grass, the rice barnyard its resistance and rice almost with a medicine called rice Jie, specializing in the treatment of rice barnyard for a while about three bottles, want to hit the rice jie to wait for the rice to be greasy before you can use this medicine, otherwise it will affect the rice greasy. If it is water barnyard grass, you can play dichloroquinolic acid and mix it with butachlor, and you can completely ** water barnyard grass. Some people say to pull it out by hand, then I ask you if you can pull it out by hand for a day or two, and you can't pull it out if you have more, so you can only use medicine.

Only manual. Because if you're using some potion to get rid of the barnyard grass, the rice will also be damaged. Be diligent and unplug it.

We should spray some pesticides to remove weeds, so that the effect is very good, and it can remove weeds very well, which is very good.

There are a lot of barnyard grasses growing in the rice fields, so you can choose some herbicides, because some herbicides are very targeted.

The weeds in the farmland are very vigorous, and they reproduce quickly and have a huge root system. The water and fertilizer capacity of the soil is very strong, and in the rural rape fields, they will compete with the rape for nutrients, thus threatening the growth and development of the rapeseed in the plot. Crops need to be photosynthesized.

The root system will be more developed, but too many weeds will inevitably block the lettuce.

of the sun. Especially when the vegetables are still relatively short, they cannot absorb sunlight and are prone to weak seedlings and yellow seedlings.

<> too many weeds can also breed various pests and diseases. Too many weeds and poor ventilation in the field create conditions for the breeding of germs, and various diseases are prone to occur. Moreover, many pests also feed on weeds, and if there are too many weeds, the more pests will absorb nutrients on both sides, which will affect the growth of crops.

It is not conducive to drought resistance, weeds, and tenacious vitality. Competitive, he will absorb most of the nutrients into himself. The impact on crops is not a small one.

The vitality of weeds is particularly strong, the rhizomes and stems are thin, and the ability to absorb water and nutrients is stronger than that of crops, so in the case of too many weeds, it will lead to insufficient nutrition of crops, affect yield, and even wilt, and it is possible that weeds will compete with crops for nutrients and water in the soil, block sunlight, and make crops unable to photosynthesize. It also affects the ventilation in the field and reduces the yield of crops.

The most important harm is to compete with crops for fertilizer, water, and light. Weeds have well-developed root systems and strong ability to absorb water and fertilizer, and crops either die due to lack of water and fertilizer, or suffer from poor growth. At this stage, fertilization water is also a problem, without crop fertilizer and lack of water, most of it is absorbed by weeds; Weeds are generally for crops, and they grow in farmland or ridges.

On the tenacious vitality, easy to reproduce, fast growth, and crops compete for nutrients, compete for living space, and spread pests and diseases, weeds have a very strong ability to survive, and the demand for water is also relatively large, and even when competing with crops for nutrition, it is more powerful than crops.

Weeds can be pulled out manually, and the biggest harm of weeds to crops is that weeds often grow very savagely, which will absorb nutrients and water in the land and reduce crop yield.

You can buy some special weeds to get in, these weeds will compete with crops for water and nutrients, will make crops not grow tall, and will also affect the harvest of crops.

Some herbicides can be applied. A lot of weeds definitely has an impact, after all, it will rob crops of nutrients, so that crops do not have enough nutrients.

You can pull out all these weeds. These weeds absorb nutrients from the crops, making the real crops not particularly good because they are malnourished.

The weeds in the field should be removed as soon as possible, these weeds will absorb the nutrients in the soil, which will make the crops grow poorly and will not have a good harvest.

When there are often a lot of weeds in the farmland, they must be pulled out in time, otherwise it will affect the growth of the farmland and the entire harvest.

Generally, glyphosate and glufosinate ammonium are used to control weeds, which only take effect on weeds, and will not hurt the seedlings at that time, but it should be noted that herbicides will remain in the soil, and the roots of the rice field absorb nutrients from the soil.

Pay attention to the method when fertilizing, first of all, pay attention to the growth of rice when fertilizing, and judge whether fertilization is needed according to different growth conditions. Secondly, we should pay attention to the amount of fertilization, which requires us to fertilize according to the fertility of the rice field and the growth of the rice, and you can choose to fertilize the water-soluble fertilizer.

In fact, there are not many types of fertilizers used in rice, and they are all targeted fertilizers according to different stages of growth and development. Generally, it is compound fertilizer, urea, silicon fertilizer, microbial fertilizer, potassium fertilizer, organic fertilizer, phosphate fertilizer and nitrogen fertilizer. However, nitrogen fertilizer must be used in moderation, otherwise there may be dead seedlings, and the taste of the rice will be very bad at the end.

The reason why herbicides do not hurt seedlings is that they take advantage of the differences between crops and weeds. 1.Physiological differences.

Different plants have different physiological responses to different herbicides, and their sensitivity to herbicides is different. For example, when the rice seedlings are "green in the needles, one leaf and one heart of the barnyard grass", such as spraying "dibarnyard grass" emulsifiable concentrate to eliminate the barnyard grass, because there is an enzyme in the rice seedling that can decompose the propanny, the propanium sprayed on the seedling has no killing effect, and the barnyard grass, but it cannot decompose the propana, so it is killed by the propernyard grass. The same is true for spraying simazine herbicide in corn fields to kill only weeds and not harm seedlings.

2.Differences in crop and weed morphology. Because crops and weeds have different morphological structures, they are subject to different herbicides.

Those who accept more are easy to be killed, and those who accept less are not easy to kill. For example, rice, wheat, and corn have a relatively thick waxy layer on the leaves, and the meristems at their upper ends are wrapped by layers of leaves. In this way, when people use herbicides, the agents are easily lost.

Even if it is not lost, the amount of leaves received is relatively small, and it cannot reach the level of death, and the whole plant is not easy to suffer. However, some dicoted weeds, such as Eyelids and Duck Tongue Grass, have large leaves, flat leaf surfaces, thin epidermal tissue, and exposed young shoots, so they receive more and are therefore easily killed. 3.

Differences in the depth of the root system.

Tools Raw materials.

Herbicide method steps.

1 6 Step by Step Reading.

If you beat glyphosate once a week before planting, the grass will not rise and it will not pollute the vegetables.

2 6 and other seedlings rise a little, just hit those seedling strengthening agents and fungicides (the seedlings just start to unearth, and the children who have just landed are the same, so special attention should be paid to protection).

3 6 Some seed stores now sell biological pesticides, and that kind of medicine can be sold in the market tomorrow after being beaten today, and it does not cause any harm to people.

4 6 selective herbicides: herbicides to different kinds of seedlings, the degree of resistance is also different, this agent can kill weeds, and the seedlings are harmless. Such as Gaicaoneng, Fluorin, Pycaojing, Simazine, Guoer, etc.

5 6 soil treatment agent: the herbicide is evenly sprayed on the soil in a certain thickness of the drug layer, when the sprouts, seedlings and roots of weed seeds are absorbed by contact and play a role in killing herbs, this effect of herbicides, called soil treatment agents, such as simazine, promethonyl, fluorin, etc., can be applied by spraying, watering, and poisonous soil method.

6 6 stems and leaves, soil treatment agent: can be used as stem and leaf treatment, can also be used as soil treatment, such as atrazine, etc. Herbicide is an agent that causes weeds to die completely or selectively.

Sodium chlorate, borax, arsenate, and trichloroacetic acid have a dead effect on any kind of plant, but they cannot be used in the field because these have residual effects. Most of the selective herbicides, especially nitrophenol, chlorophenol, and carbamate derivatives, are effective, including O-isopropy-N-phe-nylcarbamate (IPC: C6H5NHCOOCH-(CH3)2], sodium dinitro-o-cresylate, etc.

The herbicide with auxin effect is the most famous 2,4-d, which is believed to disrupt the hormone balance in plants and cause physiological disorders, but it is a very effective herbicide for plants other than grasses. It is generally believed that this selectivity is determined by the intensity of the detoxification effect of 2,4-d by the plant species, or by the fact that the concentration of 2,4-d varies with different plant species.