Rice seeding field weeding, seeding rice fertilization time

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Direct seeding rice has the growth characteristics of low tillering node, early tillering, developed root system, shallow root layer, early appearance and rapid decline in the peak tillering period, low panicle rate, large number of spikes and small number of grains per spike, etc., so it is necessary to increase the panicle rate and increase the number of grains per panicle to obtain higher yield. In cultivation, it is necessary to master the fertilization technology, through fertilizer and water adjustment, promote the deep rooting of the root system, consolidate the tillering, improve the panicle rate, and increase the number of grains per panicle, so as to obtain high yield.

Direct seeding cultivation and fertilization, to apply good basal fertilizer, tiller fertilizer and ear fertilizer: first of all, apply enough basal fertilizer, and nitrogen, phosphorus, potassium fertilizer combined application, zinc deficiency paddy field to add zinc fertilizer: basal fertilizer to organic fertilizer, if organic fertilizer is insufficient, can also be chemical nitrogen fertilizer.

Nitrogen fertilizer accounts for 1 2 total nitrogen in basal fertilizer, phosphate fertilizer is used as basal fertilizer, and potassium fertilizer occupies 70%. Generally, about 15 tons of organic fertilizer, 375 450 kg of ammonium carbonate or 150 kg of urea, 375 450 kg of superphosphate, and 90 105 kg of potassium chloride are generally applied per hectare. Zinc-deficient fields should be applied once every 1 2 years, and 30 kg of zinc sulfate should be applied each time.

All nitrogen, phosphorus, potassium and zinc fertilizers should be mixed with a small amount of organic fertilizer and then applied, and the whole layer of fertilization should be implemented, and the land should be turned over with the application and tillage. Top dressing should master the principle of "early tillering and clever ear fertilizer". Tillering fertilizer is generally applied in two times, the first application of tillering fertilizer, and 60 75 kg of urea per hectare at about the three-leaf stage.

The second application of tillering fertilizer, 7 to 10 days after the first top dressing, applied 75 kg of urea per hectare. Early application of tillering fertilizer promotes early tillering and gives full play to the advantages of low tillering. Apply tillering fertilizer to ensure that early tillering does not cause fattening and death and smoothly becomes an ear, and does not reduce the panicle rate due to too many ineffective tillerers.

Spike fertilizer should be applied rationally depending on the sky, soil and seedlings. For the fields with low soil fertility and insufficient growth in the early stage, about 75 kg of urea per hectare can be applied 25 days before heading to promote the differentiation of spikelets and increase the number of spikelets. And with the application of 45 60 kg potassium chloride, it also plays a role in strengthening the stalk.

Every 7 10 days, about 75 kg of urea per hectare is applied as flower-preserving fertilizer, which can increase the number and weight of solid grains. For the fields with high soil fertility and vigorous growth in the early stage, no flower-promoting fertilizer should be applied, but flower-preserving fertilizer should be reapplied to achieve the purpose of preserving flowers and increasing grains. When applying ear fertilizer, it is necessary to consider the problem of lodging prevention, for the sake of safety, generally do not apply flowering fertilizer, even if it is applied, it should be appropriately postponed for a few days, and can not be applied about 30 days before the ear.

Grain fertilizer has the effect of raising roots and protecting leaves, improving seed setting rate and grain weight, but if it is not applied properly, it will cause greedy green and late maturity. It is safer to apply early and middle rice with high temperature at heading and filling stage, 45 60 kg of urea can be applied per hectare, and for late rice with a rapid temperature drop at heading and filling stage, nitrogen fertilizer should not be applied, potassium dihydrogen phosphate and urea can be considered outside the root to improve grain weight and seed setting rate, and 3 kg of potassium dihydrogen phosphate and 15 kg of urea solution can be sprayed per hectare.

After 15-20 days of sowing, you can generally start to control barnyard grass, goldenrod, horsetail, sedge, ducktongue grass, so under normal circumstances, it is a better time to apply herbicides after sowing about 20 days.

1. When to do weeding in the rice direct field.

1. Under normal circumstances, when the rice enters the 2-leaf and 1-heart stage, herbicides can be used in the direct seeding field, and the weeds in the field are basically around the 2-leaf stage, which is a good time to control weeds, and the medication time can generally last until the 4-5 leaf stage of rice.

2. According to the sowing time, generally after half a month of sowing, you can start to control weeds such as barnyard grass, Qianjinzi, Ma Tang, etc., and you can start to control weeds such as sedges and ducktongue grass after sowing more than 20 days. Therefore, under normal circumstances, it is a good time to apply herbicides after about 20 days of sowing.

3. The time of weeding in the paddy field can not be too early or too late, if the control time is too early, although the weeds unearthed at this time have little resistance and can be well controlled, there are still some weeds that have not been unearthed, and new grasses will grow after a period of time, resulting in the effect of herbicides is also average; If the control time is too late, the resistance of the weed will be enhanced, and the effect of using the same dose at this time is not as good as that of the drug at the 2-leaf stage, and if the dosage is increased, the cost will also increase. In addition, the late use of herbicides is also easy to cause pesticide damage, because the liquid medicine is easy to enter the rice plant, increasing the probability of pesticide damage.

Summary. Hello, the rice is closed and weeded before the first sprout of the field, and benzyl is used within 2-4 days after sowing. Prochlor effect is good, drain the field water before the use, keep the field moist within 3-5 days after the use, so as not to reduce the weeding effect, after the seedling two leaves are one heart, shallow water should be irrigated, and the water layer should not flood the seedling heart and leaves.

Weeding and water retention for 5-7 days before rice seeding field sprouts.

Rice can be watered about 5 days after the field is closed before the field sprouts and weeded.

Rice can be watered about a week after the rice is closed before the field sprouts and weeded.

Rice is closed and weeded 5-7 before the field buds are seeded, and water can be used.

How long after weeding is the best time to water the rice field?

Hello, I have seen your question and am sorting out the answer, please wait a while Hello, the rice is closed and weeded before the field sprouts, and it is used within 2-4 days after sowing. Prochlor effect is good, the field is drained before the use of the water, 3-5 days after the use of the field to keep the field moist, so as not to reduce the effect of weeding, after the seedlings two leaves of one heart, should be irrigated with shallow water, the water layer should not flood the seedling heart leaves. Weeding and water retention for 5-7 days before rice seeding field sprouts.

Rice can be put on water about 5 days after the rice is closed and weeded before the field buds are annihilated. After the rice is closed before the field sprouts and weeded, the general relatives can be watered for about a week. Rice is closed and weeded 5-7 before the field buds are seeded, and water can be used.

Closed weeding 5-7 before rice live seeding field sprouts can be watered best, I hope it can help you!

It is determined by its growth. The fertilization time of direct seeding rice is generally three periods before, during and after, and the amount of fertilization is 10-15 kg mu. It is reported that the fertilization time of direct seeding rice after removing Huailiang grass: before transplanting, about 10 days after transplanting, and heading period.

Fertilization technology: Reasonable fertilization according to the specific growth of rice and soil fertility, pay attention to the amount of fertilizer, 8kg compound fertilizer or 6kg urea per mu. When fertilizing, choose a sunny day, no enlightenment and hidden wind in the morning.

The final fertilization of direct seeding rice is not to use the month as the standard, but according to the growth period of rice, the general top dressing of rice in the later stage can be divided into jointing booting fertilizer, ear fertilizer, grain fertilizer, can be specifically based on the growth of rice, the focus is on what fertilizer to apply.

If you can't determine whether you can eat by yourself, you can ask the local farming and agricultural technicians to give guidance. Rice is one of the most important food crops in the world today, with more than half of the world's population relying on rice as their main food**.

Summary. Scope of application.

It is suitable for rice control and control of one-year-old grasses and broad-leaved weeds such as barnyard grass, bald barnyard grass, goldenrod, cow tendon grass, cow hair felt, narrow-leaved zea, water amaranth, heteromorphic sedge, broken rice sedge, clove knotweed, duck tongue grass, etc.

What herbicides do you apply to wild rice in direct rice fields?

Hello, prochlor can be used.

Prochlor is a herbicide for rice fields with high selectivity. It is safe for rice and has a wide spectrum of herbicidal records. The seeds of the weed caninth absorb the agent during germination, and the roots absorb poorly.

It can only be used as a pre-budding soil treatment. Rice is also sensitive to prochlor during germination, in order to ensure the safety of early medication, prochlor is often added to the safety agent hail mountain CGA123407 to use juzi orange.

The range of suitable sails is suitable for one-year-old grasses and broad-leaved weeds such as rice barnyard grass, Guangpai orange barnyard grass, Qianjinzi, cow tendon grass, cow hair felt, narrow-leaved Ze Yuan, water amaranth, special-shaped sedge, broken rice sedge, clove knotweed, bright hail, duck tongue grass, etc.

Abstract The strategy of "one, two kills, and three supplements" is generally adopted. Early application of pesticides within 1-3 days after sowing for soil sealing. The mixture of prochlor, butachlor, isoproturon, benzsulfuron-methyl and pyrisulfuron-methyl is commonly used in the water direct seeding paddy field.

The mixture of butachlor and oxachlor, or the mixture of butachlor, prochlor, pendimethalin and benzylsulfuron-methyl and pyrisulfuron-methyl is commonly used in dry direct seeding paddy fields. Drugs such as isofrexone are also commonly used. Pay attention to apply pesticides when the soil is moist on the furrow surface, keep the soil moist for about 1 week after application, and there can be no stagnant water on the furrow surface, so as not to cause pesticide damage.

What kinds of herbicides are used for weeding in rice direct seeding fields?

In the field of live broadcasting, the strategy of "one letter, two kills, and three supplements" is generally adopted. Early application of pesticides within 1-3 days after sowing for soil sealing. The mixture of prochlor, butachlor, isoproturon, benzsulfuron-methyl and pyrisulfuron-methyl is commonly used in the water direct seeding paddy field.

The mixture of butachlor and oxachlor, or the mixture of butachlor, prochlor, pendimethalin and benzylsulfuron-methyl and pyrisulfuron-methyl is commonly used in dry direct seeding paddy fields. Drugs such as isofrexone are also commonly used. Pay attention to apply pesticides when the soil is moist on the furrow surface, keep the soil moist for about 1 week after application, and there can be no stagnant water on the furrow surface, so as not to cause pesticide damage.

What is the best medicine to use for weeding after live seeding Tian Siye Yixin.

Prochlor plus benzsulfuron-methyl.

The grass has come out, is it useful to use this medicine?