Do soybeans need to be pesticides when planting?

If you control pests according to the occurrence of pests, you don't know how many times you need to spray, which not only increases the cost of pesticides, but also wastes labor costs. Therefore, the best way is to use pesticides according to the phenological period of soybeans, and apply pesticides in advance at key time nodes, which can well prevent the occurrence of pests. Soybeans are imported hundreds of thousands of catties every year to supplement domestic demand, the current Ministry of Agriculture.

Pay attention to soybean planting, vigorously support farmers to plant soybeans, soybean subsidies in many areas: 320 yuan mu; This is about 146 yuan more than in 2017, so the benefits of soybean planting will be more and more in the future.

In soybean production, two major insect pests are prevented: 1. Soybean has pods and no grains, and pesticides are applied at the early flowering and full flowering stages of soybeans. 2. Harm to pods.

The pod borer is controlled by pesticides during the peak flowering period of soybeans. Soybean field management, soybean in the growing period must be weeded in time, which can not only reduce the phenomenon of insect pests, but also help soybean better growth, in the soybean pod period can be used to supplement nutrients with potassium fertilizer and manure, which can improve the yield of soybeans. But if it's the northern region.

It is necessary to start planting a little earlier, between April and May, when the temperature is more conducive to budding and late growth. It is usually harvested about half a year after planting. In addition, there are autumn beans, which are sown between the end of July and August.

In order to obtain high yield of soybean, fertilizer and water work should be strengthened, sufficient basal fertilizer and seed fertilizer should be applied, and nitrogen and phosphorus fertilizers should be applied in time after soybean emergence, and nitrogen and phosphorus fertilizers should be applied in time at the branching stage and flowering period and podding stage. Stubble planting. Meticulous land preparation:

According to the previous crop crop for autumn turning, the depth of 22-25 cm, the operation is not a large clod, not out of the strip, the block, to buckle tightly, not heavy, leakage. Soil moisture: The soil moisture content (dry soil weight%) after land preparation should be about 22% when sown, so as to ensure that the seeds absorb water normally and germinate.

Harvest in late autumn. Of course, in different places, the specific time of sowing is different due to the influence of temperature. I often hear the old man say:

Plant melons and beans before and after Qingming, when the temperature rises,15 degreesLeft and right, that's exactly what it isThe best time to sow spring beans. And winter beans are generally in the solar calendarMid to late May.

Need. Because soybeans are planted with a lot of pests and diseases, pesticides need to be used.

Basically no, soybean vitality is tenacious, has a strong ability to resist pests and diseases, and basically does not need to be sprayed.

It is necessary to use pesticides, which can effectively prevent the disaster of diseases and insects, give soybeans a stable growth living environment, and improve the yield and quality of soybeans.

Before planting soybeans, it is necessary to fertilize the soil deeply. In the past, farmhouse fertilizer was basically applied as the base fertilizer, but since the introduction of chemical fertilizer, a certain amount of compound fertilizer has been applied as the base fertilizer. Then the soybeans are sown in the soil, and after the seedlings emerge, they are only hoeed, and then no top dressing is carried out.

We used to grow a lot of soybeans here, and in addition to planting in the field, we also interplanted in the corn field. At one time, it was no longer planted in the field, and it was basically interplanted in the corn field. In recent years, soybeans have been planted in large numbers due to the large number of apple trees.

<> in soybean high-yield planting areas, if only soil fertility, basal fertilizer and seed fertilizer can not meet the nutritional needs of high-yield soybeans, so appropriate topdressing should be carried out according to the nutritional needs of soybeans. Growing soybeans requires consideration of whether the producer is growing "spring soybeans" or "summer soybeans". At the same time, it is also necessary to consider the planting area, etc.!

The main producing areas of spring soybean are the three northeastern provinces (Heilongjiang, Jilin, Liaoning) and Inner Mongolia, of which Heilongjiang has the most extensive planting area, accounting for about 50% of the country, and the output accounts for about 15% of the country. Spring soybeans are planted in April and May each year, and they are harvested in September. Summer soybeans are planted in North China and the Huanghuai region, planted in June, and gradually matured and harvested in September.

Soybean is legumine, rhizobia crops, rhizobia the biggest holding point is, with fixed nitrogen fertilizer in the air, to provide soybean growth nutrients, however, we use the soybean itself, this characteristic to produce soybeans, can not create a high yield, soybeans, in order to make soybeans high yield, in the planting process, must increase the application of low nitrogen and high potassium fertilizer, in order to meet the conditions of high yield, under normal circumstances, 5o to 80 kg of low nitrogen and high potassium compound fertilizer.

People always think one-sidedly that the soil after planting soybeans and peanuts contains rhizobia, which can fertilize the soil, so there is no need to deliberately fertilize soybeans. In fact, in the process of growing, soybeans are in great need of nitrogen fertilizer, phosphate fertilizer and other fertilizers to supplement nutrients, according to its characteristics, we most often use two different planting methods.

Soybean planting should be fertilized, the base fertilizer should be farmyard fertilizer, and the chemical fertilizer should be applied in the later stage.

1. Soybean does have the ability to fix nitrogen, but at the seedling stage, when the formation of nitrogen fixing nodules is little or not at all, a certain amount of nitrogen fertilizer needs to be applied as base fertilizer.

2. After growing, it is also necessary to supplement nitrogen fertilizer appropriately. Because the rhizobia of soybeans cannot fully meet the nitrogen needs of soybeans, especially the current requirements for high soybean yields. In fields with low fertility, supplementation is even more important.

However, if the application rate is too large, it will cause the wild growth of soybeans and affect the yield, which is also undesirable.

3. Generally speaking, after soybean flowering, the nitrogen demand reaches the highest peak, and nitrogen fertilizer needs to be supplemented at this time. It can be applied at 150 kg ha of ammonium bicarbonate or 60 kg ha of urea, or it can be sprayed with a 1% 2% urea solution in less fertile fields at the pod stage.

Soybeans need to be fertilized during the planting process, because if they are not fertilized, soybeans may not grow well.

Intercropping is the most commonly used soybean cultivation method in our region. In general, intercropping is carried out under economic fruit trees and tall crops. When planting rice, it is often planted at the edge of the rice ridge.

It is best to carry out intercropping in the late growth period of the previous crop, so that the fertilizer applied to the previous crop can be well absorbed, and there is no need to deliberately apply basal fertilizer.

If you plant soybeans from the beginning can improve the disease resistance of soybeans, and the nutrition is sufficient, there will be few pests and diseases, and the quality and yield of corn will be improved.

Soybean fertilization should be combined with nitrogen, phosphorus and potassium, nitrogen fertilizer should be applied sparingly, and top dressing should focus on the early flowering stage; It is necessary to pay attention to the deficiency of medium and trace elements such as calcium, sulfur and molybdenum, and take measures such as foliar fertilization and micro-fertilizer seed dressing to solve it; Advocate the use of hormone-free water-soluble fertilizers; Pay attention to the problem of soybean recropping and its relationship with fertilization. For plots with serious and unavoidable heavy cropping, the nitrogen fertilizer application rate can be increased or general-purpose compound fertilizer can be used to make up for the decrease in nitrogen fixation capacity caused by soybean heavy foreskin stubble. However, the nitrogen application rate should not be excessive, otherwise it will inhibit nitrogen fixation.

Fertilization technologyThe soil fertility in Northeast China, especially in Heilongjiang Province, is relatively low. Generally, there are mechanized sowing and fertilization conditions, and one-time layered fertilization can be carried out. That is, all chemical fertilizers are separated from the seeds at the time of sowing, and applied to the soil layer below 5 cm and 10 cm respectively, and the fertilizer amount of the upper and lower soil layers accounts for about 1 3 and 2 3 respectively.

Soybeans can be sprayed when they bloom.

Soybeans can be sprayed when they are in flowering, and pollination and insemination of other plants are generally carried out after flowering. When soybeans enter the flowering period, which is an important time to obtain yields, after soybeans bloom, the fragrant flowers attract many kinds of small moths to come and suck the nectar, many of which are many pests.

Therefore, the soybean pod stage is a critical period for the control of pests and diseases, and there are many reasons why the sprayed pesticides can have a good effect on pests and diseases.

Soybean control can be high-yielding, in the end, choose chlormequat or arthrochlor? The difference is too great! Don't make a mistake.

It is best not to spray pesticides during the flowering period of soybeans, which is easy to cause flower drop and reduce the seed setting rate. If the pest infestation is severe, the pesticide must be applied after 3-4 p.m. Soybean flowers generally begin to bloom at 6 a.m., especially at 8 to 10 a.m., and rarely bloom in the afternoon.

Early flowering on windy days and late flowering on cloudy days. The anthers of the stamens are dehiscence before the flowers open, then the flowers are closed for pollination, and they wither after about two days. If the application is best, this time period should be staggered.

It can be before or after flowering.

Summary. The main pests and diseases in the planting process of soybean are spraying pesticides. Soybean pest control is mainly based on pesticides.

Do soybeans need to be pesticides when planting?

The main pests and diseases in the planting process of soybean are spraying pesticides. Soybean pest control is mainly based on pesticides.

If there is a pest, it is needed.

What insects do soybean seedlings have in May, and what kind of medicine do you use?

Soybeans three times the medicine what time to hit.

Underground pest control Underground pests mainly include grubs, mole crickets, ground tigers, etc., and thiamethoxam is selected for coated finch limbs. The coating of the paragonal seed coating agent can prevent most underground pests.

It is generally necessary to inject 3 times when planting soybean in the local skin, the first time is generally 1 time when the soybean is 4-5 leaves, the second time is generally 1 time when the soybean grows to 70-80cm, and the third time is generally 1 time when the soybean is in the pod stage.

Soybean flowering period is not pesticides, at this time pesticides will affect the growth of flower buds, resulting in flower buds falling, if you want to play pesticides can be carried out before and after the flowering period, in the maintenance of soybeans can also be watered for the plant pollution-free river water, soak all the soil, but also for the plant to provide nutritionally balanced inorganic fertilizer, improve its growth rate.

1. No pesticides

Pesticides cannot be used during the flowering period of soybeans. Although the resistance of soybean to the outside world is weak during the flowering period, pesticides will affect the normal development of flower buds at this time, resulting in flower buds falling, so pesticides can not be used in the soybean flowering period, and it is best to treat the soybean by agricultural control methods to avoid pests and diseases on the plant.

2. Provide moisture

Soybeans will consume a lot of water during the flowering period, so when maintaining soybeans during the flowering period, you can provide mineral-rich river or lake water for the plants to keep the soil in a moist state.

3. Supplement nutrients

Soybean in the flowering period of nutrients demand is larger, so in the flowering period of soybean maintenance can also provide plants rich in nitrogen, phosphorus and potassium elements of mixed fertilizer, improve the growth rate of plants, in the provision of nutrients for soybeans need to pay attention to the amount of fertilizer, it is best to mix fertilizer and water evenly to provide plants.

4. Suitable lighting

Soybeans are inseparable from light in the process of growth, and insufficient light will lead to poor plant growth and yellowing of leaves, so when maintaining soybeans, it can also provide all-day sunshine for the plants, so that they can photosynthesize normally. Moreover, soybeans are light-loving plants, which can maintain normal growth when the light is too strong, and there is no need to shade soybeans when smiling and shaking.