What do you need to do to effectively weed the rice fields?

In addition to the damage caused by weeds, weed control is one of the important measures to improve rice yield. There are many kinds of weeds, and their properties are also different, which is difficult to control. For its current control measures, in addition to some physical methods to control the entry of grass sources and inhibit their growth, they mainly rely on chemical agents to kill them, and I will share some of my experience with you below.

Water-drought rotation: The most effective weed control measure is to actively improve the rice growth environment, creating an environment that is conducive to rice growth but not conducive to weed survival. At present, the most effective method advocated is water-upland rotation, that is, planting rice and then planting other types of dryland crops, and the dryland environment is conducive to inhibiting the growth and spread of various aquatic and wet weeds.

Grass seed eradication: Seeds, fertilizers and paddy soil should be treated before rice planting to eliminate mixed or left grass seeds. Before sowing, the seeds were treated with salt slurry water, ammonium sulfate and ammonium nitrate water for seed selection or mechanical selection, with the purpose of removing weeds mixed in rice seeds; Before fertilization, the organic fertilizer should be fully decomposed to eliminate the mixed grass seeds; As soon as weeds are found in the field, they are pulled out immediately to prevent their seeds from being left in the soil after they have matured.

Then, in the later stage, remove the old grass, update the knowledge of weeds in the paddy field, in order to help rice farmers control costs, scientific farming, and increase yield and income, the weeds of paddy field live broadcast often occur: mainly barnyard grass, gold, grass and flat-footed longhorn beetle. Before the rice sowing stage, the soil must be sprayed to ensure that the chemical solution adheres completely to the soil surface and achieves the drying effect of the water storage field.

To ensure the weed effect of the paddy fields, after the field cooking is over, the day before, the water must be drained so that the leaves of the elva dhaniha are exposed to the water, or drugs are applied. It should be extended to the bottom of the shrub rice for even spraying, so that the chemical solution can spray more than 40 herbicides. However, despite the fact that rice cultivation actually has its own herbicides.

Dajiangte is a 5-mesotrione prochlor GR developed by Syngenta, which is used as a blocking agent after transplanting and returning to green, and can control most of the barnyard grass, shallots, cigu, zexiao, etc. The effect is more obvious. Chlorpyrisulfuron, generally rice 2 leaves can be used, the effect of sedge is better, the effect is slower, a week before the symptoms of poisoning, generally half a month before the grass dies.

The effect is more thorough. Before transplanting: Honda's herbicides with good safety include grass nemesis, grass pills, sun stars, etc.

Keep in mind that different types of weeds require different weeds and different methods.

<> after rice transplanting, it can be taken after the rice application of the second closure, timely drainage and proper drying of the field, spraying Bendapine, herbicidal pine, herbicide, dimethyltetrachloride and other stem and leaf treatment agents. The seedlings (weeds) are closed in front of them, and the seedlings are planted for 5 7 days after each mu is used. 20 40 grams of benzyl powder, or benzyl.

20 40 grams of dichloride powder, combined with the application of rejuvenating fertilizer, mixed with 10 kg of urea, keeping the water layer 3 5 cm for about a week; There are three ways to use herbicides in rice fields: mixed fertilizer, mixed soil, or spray, depending on your own wishes, the growth of seedlings, and the number of weeds in the paddy field.

Daoyou is a new product of Dow Agro, the main ingredient is 40 pentafluorosulfonium butachlor suspension emulsion. Unlike other blocking agents, most weeds can be blocked by using Inyu. I used this product this year and it works well.

Buchlor is also known as Marchette and herbicide, which is a special herbicide for rice fields with high selectivity, mainly used for direct seeding or transplanting of annual grass weeds and some broad-leaved weeds, such as barnyard grass, goldenrod, special-shaped sedge, cow felt, etc. For barnyard grass and water bamboo leaves, double grass ether has a good control effect on barnyard grass and water bamboo leaves, especially in some fields where barnyard grass is resistant to rice jie, it is recommended to use double grass ether. In addition, on japonica rice and glutinous rice, dioxalin is not as safe as Daojie, and it is recommended to use Daojie.

Metronidazole with sodium chlorate works best and has no effect on rice yields, which is what my family has always used.

You can choose to use products with good reputations, such as Qianjin herbicides, which can quickly decompose in soil and rice fields without harming the soil or crops. At the same time, it can carry out effective environmental management of rice fields and prevent more harmful substances from entering.

Herbicides in rice fields can be used as grass busters, mercury, Han Lexing, dosage form: 10% wettable powder belongs to sulfonylurea herbicides, which are selective systemic conductive herbicides, which are mainly absorbed through the root system, rapidly transferred in the weed plants, inhibiting growth, and gradually dying of weeds.

Just ask the store that sells pesticides, they have herbicides that are specially used to deal with weeds in rice fields, and they do not harm the rice seedlings.

Summary. It is necessary to remove the weeds first, but it is best to remove them manually, so that the damage to the rice field is small.

Fertilization time. Before transplanting, we will fertilize the paddy field once, this time it is basically farmhouse fertilizer, that is, the manure of the usual livestock, and the microbial agent and root rooting agent are the base fertilizer this time, in order to maintain soil fertility. The second fertilization is about ten days after transplanting, this time it is a high nitrogen and high phosphorus water-soluble fertilizer, the purpose is to prepare for tillering, so that the tillering time can be advanced, and there are more tillers, so that the yield will be much higher.

Can it be used in rice fields, weeding first and then planting rice?

It is necessary to remove the weeds first, but it is best to remove them manually, so that the damage to the rice field is small. Fertilization timeBefore transplanting, we will fertilize the paddy field once, this time it is basically farmhouse fertilizer, that is, the manure of the usual livestock, and the microbial agent and the root rooting agent are the base fertilizer this time, in order to maintain the fertility of the soil. The second fertilization is about ten days after transplanting, this time it is a feast slag Mengwo high nitrogen Xiang Liangqing high phosphorus water-soluble fertilizer, the purpose is to prepare for tillering, so that the tillering time can be advanced, and the tillering is more, so that the yield will be much higher.

Is it okay to use wild herbicide to weed first and then plant millet after a few days.

Yes, it is better to be more than half a month in advance.

Won't it work in a week?

It's also okay, what is the best way to weed rice.

Mizuno can pretend to be a rice field with the herbicide glyphosate in advance, because glyphosate is absorbed by the leaves of weeds and kills the weeds, and glyphosate will quickly be decomposed and invalid in the soil.

1. Pyridoxon: It can be used in the 1-3 leaf stage of rice, and it can be sprinkled with 10% pyrisulfuron wettable powder (15-30 grams) per mu per mu, or it can be sprayed with water. 2. Bensulfuron-methyl:

To control ordinary weeds, 20-30 grams of 10% benzylsulfuron wettable powder can be sprayed with an appropriate amount of water per mu to control perennial weeds and barnyard weeds, which can increase the dosage to 30-50 grams; When the field has a 5 cm thick water-retaining layer, it can be sprayed with water, or mixed with fine soil and sprinkled. 3. Buchlor: spray with water 2-3 days before sowing or after emergence, if you can't transplant seedlings within 3-4 days after land preparation, it is recommended to apply pesticides immediately after land preparation, so as to effectively control weed germination, and at the same time improve the safety of rice.

4. Prochlor: After sowing 2-4 days, fill the field with a shallow water layer, and then spray evenly with 100-115 ml of 30% prochlor emulsifiable concentrate mixed with 30 kg of slag water; Or you can mix the liquid medicine with 20 kg of fine damp soil, and then spread the whole field, to ensure that the field is in a moist state, but there can be no stagnant water on the field. 5. Grass enemy:

100-150 ml of 96% grass dimulsifiable concentrate is mixed with 10 kg of fine soil, and then it is evenly spread.

Didn't you beat the rice seedlings to death?

It is used in advance, and of course it cannot be used if there are rice seedlings.

In order to reasonably control the weeds in the rice seedling field, the closed application and weeding work should be mainly done before rice transplanting, and the closed weeding work before transplanting should not be applied immediately after water ploughing, but should be used 5 7 days before transplanting, so as to prevent the time interval between drugs before and after transplanting is too long, reduce the weeding effect and cause pesticide damage. In order to ensure the actual effect of closure, the following aspects should be done.

Selection of herbicides: Guangzhou Honda's herbicides with good safety factors include Arozine, grass natural enemies, Nongdeshi, Weinong, Xiangpai Caodan, Sun Star, etc., and the herbicides with poor safety factor are butachlor. The selection of herbicides should be cautious, according to different species of weeds, the selection of pesticides, the careful and meticulous use of acetochlor, especially acetochlor pesticides, can not be used locally, to avoid unreasonable use, resulting in limited production, inspection and even extinction.

Effective application of pesticide application methods: mainly use poisonous soil method, throwing spray method, mist machine sprayer method, but can not use poisonous fertilizer method, original drug bottle throwing method application.

Pesticide application regulations: chemical weeding methods must be symmetrical and consistent, do excellent atomization, accurate dosage, apply pesticides according to the grid layout map, divided into pond ridge chemical weeding and Guangzhou Honda weed prevention. The organic chemical weeding of the ridge should be carried out sooner or later without the condition of wind entering, and the printer nozzle should be covered to avoid the drift of the agent.

Four principles should be adhered to before planting closed weeding: first, it is necessary to stipulate meticulous ploughing; The second is to focus on safety, high efficiency, broad spectrum, and applicable standards to grasp the secret recipe of the drug; the third is to follow the standard of early and small, and immediately use the drug as required; The fourth is to do a good job of tease the slurry tube before and after the medication. Ploughing must be flat, so that the mud is exposed in inch water, and resolutely prevent the depression from causing pesticide damage or leading to poor weeding effect, and the aquifer must be a matter in the closed case, so as to avoid deep watering resulting in low pesticide concentration, or there is a lot of drainage when transplanting, reducing the efficacy.

Hello, we are happy to answer for you, the selection of herbicides in rice fields should be carried out according to local regulations and agricultural practices, and must be paid attention to environmental protection and human and animal safety. Here are some common herbicide options used in paddy fields: 2,4-d:

This is a broad-spectrum weed herbicide that is effective in controlling a wide range of Rolling Herbaceous Weeds. However, care must be taken when using it to avoid causing harm to other plants. Bad grass clear:

This is a herbicide that is particularly effective against stuffy and some hemicotyledonous weeds. However, the instructions on the product label should be carefully read and followed before use to ensure proper and safe use. Triazine herbicides:

Atrazine and cithiazole, these compounds can be used to control a range of weeds. However, it is important to be aware of the regulatory restrictions for this chemical in your area before use.

Hello dear, I am happy to serve you<>

The choice of herbicide in rice fields needs to be decided on a case-by-case basis. In general, broad-spectrum herbicides such as glyphosate, glufosinate-ammonium, glufosinate-ammonium and alachlor can be selected, which can effectively control weeds in rice fields. Glyphosate is a broad-spectrum herbicide suitable for weed control in paddy fields.

It can be absorbed through the leaf pants and conducted through the plant, and has a good weeding effect on a variety of weeds. Glufosinate-ammonium is a herbicide that inhibits the synthesis of plant proteins, mainly used for weed control in rice fields. It is able to be absorbed through the leaves and subsequently transferred to the plant, thus inhibiting the growth of weeds.

Glufosinate-ammonium acetochlor is a herbicide with both glufosinate ammonium and acetochlor, which can be widely used for weed control in rice fields. It has a good control effect on a variety of weeds through leaf absorption and root absorption. In addition to the above herbicides, there are other herbicides that can be selected from Celestiol, such as difenone, oxachlor, etc., which can also be selected and used according to the actual situation.