There is a lot of barnyard grass growing in the rice field, how can I get rid of it?

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.

In dry fields, rice barnyard can be treated with bioxalin, herbicides, etc.

Barnyard grass control methods.

Barnyard grass can be said to be on the list, is the first major malignant weed in the rice field, at present there are more and more kinds of barnyard grass, from the perspective of rice planting areas in various places, there have been green barnyard grass, sponge barnyard barnyard grass, red stem barnyard barnyard grass, long barnyard barnyard and so on. Due to factors such as non-standard and unscientific medication over the years, the resistance of barnyard grass is also increasing, so many people report that ordinary pesticides are not completely controlled.

For the control of barnyard grass, the commonly used pesticides for many years, such as pentaflusulfachlor, dichloroquinolic acid, cyanofluoxate, etc., have produced resistance to pesticides, and the effect is very unsatisfactory. I also said above, the early blocking treatment is very critical, and the same is true for the drug-resistant areas, we must do a good job in the early stage of closed weeding, and then cooperate with stem and leaf treatment, the combination of the two can effectively prevent and control multi-resistant barnyard grass.

As for the use of blocking drugs, there is no fixed standard, and butachlor, prochlor, pendimethalin and other agents can be selected according to the planting method, which can not only greatly reduce the base number of barnyard grass in the field and suppress the leaf age of weeds, but also pave the way for the later stem and leaf weeding.

After the 4-leaf stage of rice, if there are more barnyard grass (grass age 3 to 5 leaf stage) in the field or more double-spike paspalum and rice Li's grass, 10% bioxaether suspension agent can be used for stem and leaf treatment of 10 to 20ml mu. In the southern indica rice area, 30 to 40ml of 10% bioxaether suspension plus 30 to 40g of 50% pyrisulfuron dichloroquinolinic acid wettable powder can be used to control barnyard grass, double spike paspalum, rice Lee's grass, sedge and broad-leaved weeds at the 5 to 6 leaf stage of rice in the southern indica rice area.

If a large amount of gold occurs in the field, 10 to 20ml of 10% bioxaether suspension plus 100 to 200ml of 10% cyanofluoxalate emulsifiable concentrate can be sprayed per mu, and the dosage can be appropriately increased when the grass is old. In the fields dominated by barnyard grass and other annual weeds, at the 2 to 5 leaf stage of barnyard grass, 60 to 80ml of pentaflusulfamine oil suspension or 80 to 100ml of 10% oxazolamine emulsifiable concentrate were sprayed with stems and leaves per mu.

To sum up, barnyard grass is the first malignant weed of rice barnyard grass, although it is more difficult to prevent and control, but as long as the timing is grasped and the right method is used, the control effect is still ideal, so we must do a good job in the early stage of closed treatment, combined with stem and leaf treatment, in fact, this is the same as the "two seals and one supplement" mentioned above. Finally, remind everyone that the direct rice field must do a good job of weed closure (whether barnyard grass or other weeds), otherwise weeds will compete with rice for water and fertilizer, glory and space, because weeds have the characteristics of fast growth and reproduction, developed root system, and tall weed plants, etc., in the case of symbiosis with rice, it will inhibit the growth of rice and greatly affect the normal growth of rice.

Do you pull radishes one by one?

Pre-bud closure is the most economical control method to control the occurrence of rice barnyard grass, which has low control cost and can effectively improve fertilizer utilization rate. Spraying stems and leaves to kill barnyard grass is generally the best period for the use of barnyard grass 2-3, which is less used and has a good effect. Missing the best period of medication not only increases the cost of medication, but also makes it difficult to prevent the excessive age of barnyard grass leaves, and the effect is not very reasonable.

Mastering the correct medication period is also an effective means to control barnyard grass and save costs.

You can go to the agricultural market and buy special herbicides. You know it as soon as you say it, and it works pretty well. Pay attention to protect yourself when spraying.