What are the management of soybean flowering?

1. Lodging prevention: After soybean flowering, it enters the period of vegetative growth and reproductive growth. In order to prevent lodging, soil cultivation should be carried out before soybean flowering and row-sealing, so as to promote the soil to maintain good permeability, so as to facilitate the development of root system, increase the number of lateral roots, and improve lodging resistance.

2. Anti-apprentice:

1) It is sprayed with 15 paclobutrazol 40 grams of water per mu at the early stage of flowering, which can promote the soybean stalks to be thick and strong, and it is not easy to grow;

2) It is to pluck the top of the main stem by 2 cm at the early flowering stage or full flowering stage of soybean, which can thicken the soybean leaves, reduce the plant height, control the length of the soybean and increase the number of pods.

3. Anti-premature aging: During the flowering period of soybean, vegetative growth and reproductive growth enter the vigorous period, and nutrients need to increase. If the soil fertility is poor, the nutrients are insufficient, and the growth is weakened, it will affect the growth of the plant and the number of pods, and reduce the yield.

For the fields with weak growth, 4 5 kg of urea per mu was applied in combination with soil cultivation at the early flowering stage. At the same time, potassium dihydrogen phosphate solution can be sprayed on the foliar surface to ensure nutrient supply and increase yield.

4. Drought prevention: The flowering period is a critical period for soybean water demand, when the metabolism is vigorous and the water consumption is large. In case of drought, the soil moisture content decreases, which can easily lead to physiological water shortage of plants and cause a large number of flower drops.

Water must be supplemented, irrigation advocates small water irrigation, the amount of water should not be too large, to prevent large water flooding. However, in case of heavy rain or even rain, it is necessary to drain water in time to prevent waterlogging.

5. Disease and insect prevention: soybean has weak resistance to the external environment during the flowering period, and spraying chemical pesticides at this time is easy to make the flower buds fall off and reduce the yield. Therefore, the prevention and control of pests and diseases should be based on agricultural control and early control.

Strictly control the concentration of spraying, and the spraying time must be carried out after 5 p.m.

1. Cultivating: After soybean flowering, it enters the period of staggered growth of vegetative growth and reproductive growth, when the temperature is high, the light is strong, the plant growth rate is fast, and it is easy to form a "long-growing" lodging yield reduction in high fertilizer and water plots. Therefore, it is necessary to cultivate soybean before flowering and ridge sealing, maintain good soil permeability, facilitate root development, increase lateral roots, control the upper and lower levels, adapt to the ontogeny and group structure, and achieve the purpose of robust plant development, drought resistance, waterlogging resistance, lodging resistance, and yield increase.

2. Drainage and irrigation: the flowering period is the critical period for soybean water demand, if the soil moisture exceeds the field water holding capacity of more than 80%, the growth and development of the plant will be affected, so the water in the field should be discharged in time after heavy rain, reduce the humidity of the soil and air, and promote the normal growth of the plant. At the end of flowering, the growth of nutrients reaches the peak, and the metabolism is vigorous, at this time, if the soil water content is reduced, it will cause a large number of flower pods to fall off, so it should be watered in time according to the lack of soil moisture.

3. Top dressing: In the middle and late stages of growth, if there are fewer flower pods, more shedding, light leaf color, weak plants, etc., it is the phenomenon of defertilization, and should be topdressed in time to supplement soil nutrients.

4. Spraying: soybean resistance to the external environment is very weak during the flowering period, and spraying chemicals at this time will kill pollen, damage the stigma, make the flower buds fall off, and increase the seeds, which usually leads to a 10% 15% reduction in yield. If pests and diseases occur during the flowering period and must be used, it is best to choose after 4 p.m., and strictly control the amount and concentration of pesticides.

As the saying goes, soybeans bloom early, and flowers should be cared for. The management of soybean pods directly determines the final yield and profit of soybean planting.

Soybean flower pod stage water and fertilizer are sufficient, high temperature and high humidity, easy to occur. Long-term cultivation will consume a lot of nutrients, resulting in a significant reduction in the number of soybean flowering and pod-setting, which in turn will affect the yield in the later stage. In general, the vigor of soybeans needs to be controlled in the early stage of flowering, but it is necessary to accurately judge whether soybeans need to be vigorous according to the growth of soybeans.

In the flowering and fruiting stage of soybean, water and fertilizer nutrition, growth and development, and plants are highly intensive. In case of strong storms and rainy weather, it is easy to lodging, which affects the output in the later stage. Especially in the case of high planting density, the growth of plants is most prone to lodging.

In order to ensure the yield of soybean in the later stage, the prevention and management of soybean lodging should be done in advance.

Soybean has a lot of flowering and pod-setting during the flowering and podding stage, and the demand and consumption of nutrients are large. If nutrients are deficient, it is easy to age prematurely. At this time, the fertilizer of the pod can be chased according to the strength of the soybean.

In general, the basal fertilizer is insufficient, the soil fertility is poor, and the soil is weak for a long time. On the one hand, about 5 kg of nitrogen fertilizer can be applied per mu of soil, and on the other hand, 100 grams of potassium dihydrogen phosphate can be applied per mu. The dosage of ammonium molybdate, 100 grams of borax plus 50 kg of water.

Spraying twice in a row, once every 7-10 days, can basically meet the nutrient needs of flowering and pod-setting stage.

Soybean is sensitive to water during flowering and podding, and the water requirement is relatively large. On the one hand, it is necessary to water in a timely and adequate manner, and on the other hand, it is necessary to prevent excessive drought or large amounts of water accumulation in the soil. Otherwise, it will lead to soybean plant wilting, flower and pod dropping, degumming and root rotting.

When watering, it is best to keep the soil moist with a small amount of water, but do not water the oak irrigation soybeans, which will prevent the roots from threshing.

Soybean pest control is not timely, which will not only lead to flower drop, but also lead to premature soybean senescence, thereby reducing soybean yield. The main diseases of soybean are root rot, mosaic disease, anthracnose, downy mildew and Verticillium wilt. Common pests are aphids, carnivores, hymenoptera, rootflies, and subterranean pests.

Control drugs are selected according to the type of pest and disease. When using simple medicine, it should not be used at high temperature at noon, and it should be used strictly according to the drug concentration and prescription. Dosage.

It needs to be watered and fertilized regularly, and it is important to pay attention to disease problems, pay attention to the protection of the soil, and also pay attention to some growth problems.

There must be sufficient sunlight exposure from the spring front, and we must pay attention to the prevention and control of pests and diseases, timely watering and fertilization, to ensure the vigorous growth of the plant, but also to pay attention to the harmfulness of man-made.

Be sure to water in time, and then be sure to fertilize, you can choose potassium fertilizer, timely pest prevention, spraying pesticides, and cleaning up stagnant water.

First of all, after soybean flowering, it is necessary to begin to absorb nutrients, at this time, cultivating soil can prevent plant lodging, generally in soybean flowering and ridge sealing before cultivating, to maintain field permeability, promote root development, increase lateral roots, improve soybean lodging resistance, to achieve the purpose of increasing yield. Secondly, during the important period of soybean flowering period, the leaves of the plant are normal in the morning, and when the leaves wilt at noon, it is necessary to irrigate in time, generally at night. It is best to use sprinkler irrigation, with a volume of 30 to 40 mm per irrigation.

If there is too much water in the field, soybeans can not grow normally, after heavy rain, it is necessary to remove the water in the field in time, reduce soil moisture and air humidity, and promote the normal growth of plants. Finally, soybean needs a lot of fertilizer nutrients during the flowering period, and if it is not topdressed in time, there will be fewer flower pods, flower and pods, and weak plants. 3 5 kg of urea, 5 10 kg of superphosphate can be applied per mu, and potassium sulfate can also be used, with a dosage of about 5 kg per mu.

When fertilizing the last time, the fertilizer is evenly applied to one side of the bean plant, and the top dressing should not touch the leaves, nor close to the roots, and then cover the soil.

The flowering period of soybean is the period of soybean reproductive growth and vegetative growth at the same time, while flowering and podding, while the plant grows, in the rainy and windy area, in the soybean into the flowering period, before the ridge is sealed, the soybean should be cultivated and the ridge is supported, the benefits of the ridge are obvious, the drought weather is easy to water along the ditch, in case of heavy rain, drain along the ditch. After ridge support, it is also conducive to the increase of root lateral roots, laying the foundation for high soybean yield, controlling the height of soybean plants, and improving the lodging resistance of soybean. After soybean enters the flowering period, the metabolism is vigorous, the water required increases, and the lack of water encounters drought, which is easy to cause the increase of soybean flower drop, therefore, in order to prevent the physiological water shortage of soybean and encounter dry weather, timely replenishment of water for soybean is an important measure to improve the high yield of soybean.

Generally, the soybean is properly sprinkled with irrigation, or watered with small water, it is strictly forbidden to flood the soybean with large water, which affects the normal respiration of the soybean root system, if it encounters heavy rain, resulting in excessive soil moisture, it is necessary to drain the water in time, and try to create a good soil environment for the soybean root system.

The soil must be very fertile, the pH should be suitable, the temperature should be suitable, the seeds should be very high-quality, watered more, eat more fertilizer, and have a certain daily life, so as to achieve high yield.