Is it suitable for pesticides during the flowering period of rice?

In fact, it is possible to apply pesticides during the flowering period of rice, but it is best to avoid the time of day when it blooms and is fertilized. The rice flowering period should be applied before 9 o'clock and after 4 o'clock in the afternoon to avoid the flowering period. In addition, it is necessary to choose the right and reasonable agents and fertilizers for proper spraying.

1. Choose the right time to spray.

Try to avoid flowering for medication: Generally, rice is used at 9:00 a.m. to 11:00 a.m

The flowering at 00 is the most abundant and the most vigorous. When the rice blooms, the glume shell opens, and the flower elongates rapidly to stretch the pollen out of the glume shell, if the rice is pesticide-applied at this time, the liquid or powder is easy to enter the flower, injure or kill the pollen and anthers.

Ovary, etc. In addition, the flower sap will also wash the pollen down, thereby affecting the pollination of rice, directly resulting in the increase of rice infertility rate, resulting in a serious reduction in rice yield. Therefore, spraying pesticides on rice should be carried out before or after noon, and our actions should be as light as possible when spraying, so as to avoid hurting the rice ears and causing unnecessary losses.

2. Choose the right agent.

The rice heading and flowering period is a critical period for the prevention and control of ear neck blast, rice koji disease, sheath blight, rice borer and other pests and diseases, so we must seize the opportunity and use drugs rationally. If the pesticide is not selected properly or the concentration is too high, it will have an adverse effect on rice seeding.

3. Check the concentration of drugs.

The panicle tissues that have just been extracted from the rice flowering stage are young and tender, and the ability to resist pesticides is very weak. Therefore, when spraying pesticides, the dosage and concentration of pesticides must be strictly controlled to prevent pesticide damage to rice. If there is a long sunny drought and dry air conditions, the amount of water should be appropriately increased when preparing the liquid medicine to avoid spraying damage.

Pesticides should be used carefully during the flowering period of rice to prevent the reduction of rice yield caused by improper application of pesticides.

4. Use foliar fertilizer.

There are three main benefits of using foliar fertilizer during the heading and flowering period of rice.

First, heading and flowering coincided with high temperature and drought, which had a great impact on flowering and fertilization. By spraying Strim amino acids.

Foliar fertilizer can promote the development of pollen and the elongation of pollen tubes, enhance the humidity of the stigma, enhance the fertilization ability, and promote the completion of fertilization and fruiting. Reduce empty particles and increase yields.

Second, it can enhance the ability of rice itself to resist high temperatures. Foliar spraying of pepticoboron can enhance the ability of rice to resist disease and high temperature and drought during the heading and flowering stage. Also, take care to irrigate to keep the field moist.

Thirdly, it can protect functional leaves and roots, promote the absorption of mineral nutrients by rice, and promote the development of roots. In the later stage, it can resist lodging. The most important thing is that 90% of the formation of rice yield comes from the transfer of photosynthetic products of functional leaves, and protecting functional leaves and prolonging the life of functional leaves is the guarantee of high yield.

The control agent should try to choose a good control effect, with increased yield and also to prevent sheath blight and rice koji disease, and can be added to brassinolide.

and other high-quality growth regulators, so as to achieve "one spray with multiple prevention" and "disease prevention and increase production".

Pesticides cannot be used during the flowering period of rice. Because the flowering period is the pollination period, pesticides will fall off the pollen at this time, and the pollen cannot be pollinated after being stained with pesticides. Therefore, the application of pesticides during the flowering period will cause a reduction in yield.

Rice flowering period at this time spraying is OK, but must be avoided, flowering, flowering time is mostly in the morning 8 o'clock to 2 pm, 9 11 o'clock for the flowering period, in the flowering period choose to spray in the evening, avoid the flowering time can reduce the damage to rice flowers. However, hormonal pesticides are not recommended.

Top dressing is not recommended during the flowering period, because the ability of the roots is degraded at this time, and the fertilizer use efficiency is reduced. It is recommended to spray Trim amino acid foliar fertilizer once at the budding stage, heading stage, and full heading stage, which is the best.

At this time, the period of special sensitivity to water, first of all, to ensure that there is no shortage of water, not subject to drought, generally maintain a 30 mm water layer in the field, so that the absorption of nutrients by rice plants is smooth, maintain the maximum photosynthetic efficiency, promote spikelet differentiation, and reduce spikelet abortion. In addition, it is necessary to prevent diseases, and the main insect pests to prevent are dimorphic borer, rice bract, armyworm, rice leaf roller, and rice planthopper, etc., and the main diseases are panicle rice blast, sheath blight, browning panicle, etc., and we must strengthen disease prevention and control.

In case of insect infestation, it is recommended to use Kangkuan, the effect is better. Rice blast can be used for a series of preventive drugs such as chunleimycin.

I can spray medicine. But avoid the time of day when flowers bloom for fertilization. The rice flowering period is before 9 a.m.

Spray after 4 p.m. Do not use hormonal pesticides. Strictly follow the dosage used.

For rice. Growth has little effect.

Rice pesticides are generally applied after jointing, which is the midsummer stage, the temperature is relatively high, to avoid the effect of high temperature, it is best to choose between 90 o'clock in the morning or between 4 o'clock and 6 o'clock in the afternoon. On a sunny morning, spray can be sprayed after the dew has dried. Spray after 3 p.m. and stop when the dew comes up.

There is no dew on cloudy days, and spraying can be done without rain. Note that there should be no rain within three hours after spraying, so as to ensure the efficacy of the drug, otherwise it should be re-shot.

It is better not to use rice during the flowering period, this time is the time of rice pollination, fungicides and insecticides are best to avoid this time period, otherwise it is easy to cause rice yield reduction and quality reduction. The weather is relatively cool during the week from the time the rice is planted to the time it emerges. The large and medium sheds are mainly sealed and insulated, and care should not enter and exit with cool breezes.

Try to extend the first and second watering time, that is, after the seedlings come out, do not water first, and then water the first time when the seedbed soil is hard to touch. After watering, water again when the bed soil is very dry. When the seedlings are one and a half leaves, they begin to ventilate and refine the seedlings, and the squatting seedlings prevent them from growing.

Generally, as the seedlings get bigger and the weather gets warmer, gradually extend the ventilation time and increase the ventilation openings.

When the seedlings are one and a half leaves to two and a half leaves, it is an important time to prevent the seedlings from getting diseases, and it is necessary to focus on preventing the occurrence of bacterial wilt and blight. Rice is easy to lack fertilizer after 2 and a half leaves, and the leaves of seedlings will generally turn yellow and not so green, at this time, we should pay attention to fertilization once, you can use Yanwo potassium dihydrogen phosphate + Yanwo zinc fertilizer, the effect is better.

Medication can be applied.

However, it is best to avoid the blooming flowers at noon, but it is not recommended to use hormone pesticides. The flowering period of rice is generally about a week, the flowering time of the flowering period is mostly from 8 o'clock in the morning to 2 o'clock in the afternoon, 9 to 11 o'clock is the peak flowering period, and the spraying is selected in the evening during the flowering period, and the damage to the rice flower can be reduced by avoiding the flowering time.

Extended information: Rice is a kind of herbaceous rice, a cereal, and it is also the most important and longest-standing kind of rice as a grain in the genus, which is different from upland rice. Native to China and India, rice has been cultivated in the Yangtze River basin of China 7,000 years ago.

Rice is divided into indica and japonica rice, early rice and middle and late rice, glutinous rice and non-glutinous rice according to rice type. There are other classifications, which are divided into paddy rice and floating rice according to whether they are soilless or not; According to the life cycle, it can be divided into season rice and "lazy rice" (regenerated rice over the years); According to the height, it is divided into ordinary rice and giant rice of about 2 meters; According to salinity tolerance, it is divided into ordinary freshwater rice and "seawater rice" (in fact, it mainly uses fresh water).

The fruit of rice is rice, and the rice is called brown rice after removing the glume husk, and the brown rice can be obtained by grinding off the rice bran layer. Nearly half of the world's population feeds on rice. In addition to being edible, rice can also be used as industrial raw materials for brewing and sugar, and rice husks and rice stalks can be used as feed.

The main rice producing areas in China are mainly the Northeast region, the Yangtze River basin and the Pearl River basin.

Abstract:It is best not to apply foliar fertilizer during the poplar flowering period of any crop.

Potassium dihydrogen phosphate can be sprayed during the flowering period, but it is advisable to choose after 5-7 a.m. or 5 p.m., and must avoid 9 a.m. and 4 p.m. (especially in fine weather).

Is it okay to spray potassium dihydrogen phosphate during the flowering period of rice?

It is best not to apply foliar fertilizer during the poplar flowering period of any crop. Potassium dihydrogen phosphate can be sprayed during the flowering period, but it is advisable to choose after 5-7 a.m. or 5 p.m., and must avoid 9 a.m. and 4 p.m. (especially in fine weather). When rice begins to flower, potassium dihydrogen phosphate liquid fertilizer can be sprayed before 8 a.m. and after 5 p.m.

The specific situation should be determined according to your local situation, the above is for reference only, how many grams can be played per mu?

This concentration is best controlled within 3%. Consult with a local agricultural technician, depending on your soil conditions

Hello dear, happy to answer your <>

The rice flowering stage refers to the ulnar chain stage when rice plants begin to flower. During this period, rice plants have entered the stage of simple growth, and the flowering process has an important impact on the yield and quality of rice. In general, it is not recommended to spray pesticides during the flowering period of rice.

This is because the flowering stage of rice is exposed to the outside of flowering, and the flower buds and pollen are sensitive to the external environment, including chemical pesticides. Spraying pesticides may cause damage to rice flowers and affect pollen falling on pistils for pollination, thus affecting rice fertilization and seed setting. However, in some special cases, such as severe insect infestation or disease attack during the flowering period of rice, some emergency measures may be required to control the occurrence of pests and diseases or sleepiness.

In this case, spraying selective and low-toxicity pesticides can be considered and operated at the right time to minimize damage to the rice flowering site. In general, in order to ensure the yield and quality of rice, as well as the safety of the environment and human health, it is recommended to follow the standard operating practices for the use of pesticides, and scientifically and reasonably select the timing and method of pesticide use according to the climatic conditions of the planting area and the characteristics of rice varieties. At the same time, agricultural management should also be strengthened, comprehensive prevention and control measures should be adopted, and the prevention and control of pests and diseases should be done well, so as to reduce dependence on pesticides.