Peanut area noticed: How to control the peanuts after the rain? Peanut control Wang Raiders!

At present, peanut growth is prosperous. Recently, Shandong has frequent rains. Peanuts are prone to occur and reduce yield. Peanut control is an important part of peanut high-yield management. If it is applied too early or improperly used, it will not increase production, or even It is counterproductive and causes a reduction in production.

When does peanut control take place, how to fight, what is the ingredient of peanut control?

Why should peanuts be controlled?

Peanuts are in a prosperous period. If the management is not good, it will cause the peanuts to grow wild, and it will become an indisputable fact that the long lice are not fruitful.

Peanuts in the conditions of sufficient water and fertilizer, high temperature and good light, the growth rate is accelerated, and it is easy to cause stems and leaves to grow. This kind of prosperous has no direct beneficial effect on peanut yield increase, but it wastes the fertility of the soil.

If it is not controlled in time, the plant height is too high and too dense. The stem is too fast and weak, it is easy to fall, and the nutrients are excessively supplied to the stems and leaves, so that the nutrients needed for pod development are reduced, the fruit is not full, and the yield is affected.

Therefore, we must pay attention to the effective control of peanut growth, effectively promote the transfer of nutrients to the roots, convert vegetative growth into reproductive growth, make peanut nuts full, improve the rate of achievement, and thus achieve the purpose of peanut production.

Peanut control period

Use plant growth regulators to regulate peanuts. Don't expect to control them all at once. This is not consistent with the growth of peanuts. The correct method of use and principle is a small number of times, step by step control.

1. The best period: a large number of fruit needles into the soil, at this time the first batch of pods into the soil is as thick as a small finger, and the second batch of fruit needles resembles a chicken mouth.

2, water and fertilizer is sufficient, the growth is strong, the plant height reaches 30 ~ 35 cm.

3, before and after spraying should pay attention to keep the soil moist in the field, too dry, unfavorable nutrient absorption, and will increase the inhibition of peanuts, resulting in a single-strength phenomenon.

In view of the drought in the early stage of this year, the seedlings are ideal. It is expected that the growth rate of peanuts will increase due to the increase of rainfall after mid-July, and it is easy to grow.

The first use when the field begins to seal the ridge, the time is about July 22-25.

Then according to the growth and climatic conditions, the plant height is 45-50 cm, the second application, the time is about August 10-20, and the plant height is not more than 60 cm when the peanut is harvested.

Selection of peanut control agent

In production, the more commonly used chemical control agents are diazolol and dilute azole.

First, the excessive use of paclobutrazol will seriously affect the development of peanut pods, so that the fruit shape becomes smaller, and the shell is thickened. If used for seeding, the emergence of seedlings is delayed and the growth potential is weak;

Second, premature application will aggravate the occurrence of peanut leaf disease, causing the leaves to die and fall off in advance, causing premature senescence of the plants. Third, the paclobutrazol has a longer residual effect in the soil, which will inhibit the growth of the later crops.茬 Use. Therefore, it is recommended not to use as much as possible, and peanuts are forbidden to use.

Peanut control agent use method

When using, master the following principles:

1, a small number of times. That is to say, the control of peanuts should be carried out 2-3 times to avoid excessive use and control prematurely, which affects the normal growth of peanuts. The total amount of medicine per acre is not more than 40 grams (about 20 grams per dose), and no more than 2 sprayers per spray.

2. Spraying should be carried out in the afternoon. If it rains within 6 hours, it should be re-sprayed.

3. Add a small amount of neutral detergent when spraying, which can increase the liquid spreading and leaf absorption capacity.

4, spray the top of the peanuts when spraying, a spray and can not be re-sprayed.

Why is it too early to control production?

The prosperous period is a key issue, and production will be reduced too early. For example, the flowering period is a period of vegetative growth and reproductive growth. This period not only inhibits the growth of stems and leaves, but also inhibits flowering, and the formation of fruit needles is less. If it is sprayed in the lower needle period, the fruit needle is inhibited from stretching, the needle is short, the fruit is thin, and the number of fruit is affected and the nut weight is heavy.

How to control the peanuts in the rain?

Generally used in normal amounts, excessive dosage affects the development of pods, making the fruit type smaller, the shell thicker, the leaves prematurely dying, withered, and the leaf disease is also aggravated.

However, in special years, such as the rainy year, the first time after the control of 10 to 15 days, the plant height can be sprayed more than 40 cm, and spray evenly when spraying, avoiding heavy spray, leaking spray and spraying. After the rain.

High-yielding fields can be combined with the prevention and control of pests and diseases for a number of small-scale chemical control, and attention should be paid to appropriately reducing the amount of each chemical-controlled agent.

Peanut control and comprehensive management technology

This stage is generally high temperature and high humidity, and is also a stage in which peanut brown spot disease, black spot disease, scab disease and other diseases are easy to occur. It can be combined with high-efficiency broad-spectrum fungicide to control leaf diseases.

In addition, peanut leaves, fruit needles and pods can absorb nutrients at this time. The pod development period is a critical period for nutrients. At the same time, the deficiency is caused by yellowing. At this time, attention should be paid to the supplement of foliar nutrition, and the nutrition should be supplemented as much as possible. Liquid fertilizer. According to the actual situation, it can be combined with control to add sterilization and nutrition.

Peanut control precautions

1. Peanuts after flower control should pay close attention to the growth of the field and strengthen management to prevent leaf spot and premature senescence of leaves.

2, timely harvest, harvest too late, bad fruit, affecting production!

During the growth of peanuts, the water is sufficient, the temperature is high, and the growth rate is accelerated, which easily causes the stems and leaves to grow. This article describes in detail when the peanut control Wang hit, how to fight, the use of control agents and precautions hope to help everyone.