When citrus is in bloom, what are the chemicals that cannot be used?

When citrus flowering, it is also the season of frequent pests and diseases, and it is necessary to apply pesticides to citrus, but pesticides such as organophosphorus pesticides, stone sulfur mixtures, highly toxic pesticides, and herbicides cannot be hit, and these drugs are poisonous and easy to cause citrus trees to wither.

During the flowering period of citrus, stone sulfur mixture, alkyne mite, gibberellin and organophosphorus agents should not be used on plants. Stone sulfur mixture is a flower shrinking agent, which causes a large area of flowers to fall off during the flowering period. Reasonable spraying of pesticides during the flowering period of citrus will be more conducive to its growth, but it is necessary to pay attention to the choice when using pesticides, such as stone sulfur mixture, gibberellin and organophosphorus and other agents can not be used for it.

The flowering period of citrus can be sprayed, and the flowering stage of citrus can not use stone sulfur mixture, which is a commonly used bactericidal acaricide, but it also has the effect of shrinking flowers. Gibberellin can be used in the citrus flowering period, but it can not be used for a long time, and the amount of use cannot be too large, and before applying gibberellin, it must provide sufficient fertilizer and water for citrus trees, organophosphate agents are not suitable for use in citrus flowering, it has high toxic components, spraying citrus will cause new shoots to deform, flowers fall off in a large area, so it must not be used.

Do a good job of fruit preservation, anthracnose, resin disease combined with medication, this time period is also the peak period of citrus red spider damage, because the weather temperature and humidity are more suitable for the survival of red spiders, so the number of generations that occur during this period is also the most time, and the prevention and control drugs will be more than 2 times. 15 to 20 days depending on the weather conditions. The concentration of 920 is different for different varieties, and 20 units are used for general varieties, and 920 can be used for the second time to preserve the fruit of mandarin oranges.

Add natural brassin, high potassium, foliar fertilizer, alginic acid or amino acids, and pesticides for pest control. Citrus is a very tasty fruit, with a unique sweetness in its weak sourness, which is particularly refreshing and refreshing. It usually blooms in April.

It is also important to improve its fruit-bearing rate.

<> different regions have different climatic conditions, and the flowering time of citrus is also different. The citrus we have here, now is the time to bloom. According to the local reality and the observation situation in recent days, the three rural people in Anzhou are as follows.

This poem is also very suitable to describe the time citrus blooms. Different regions have differences in climate, different varieties of citrus, there is a little difference in flowering time, a few citrus will bloom at the end of February, most citrus varieties bloom in March-April, <>

When the fruit develops to the size of a thumb, the plants and branches with too many fruits, too many young fruits, diseased fruits, deformed fruits, small fruits and too weak hanging fruit branches are thinned, and the leaf-fruit ratio relationship of 10 20 normal functional leaves in each fruit is maintained. Borax and other trace elements can be sprayed to preserve flowers and fruits. This not only maintains the current year's production, but also lays the foundation for the next year's production.

According to the growth of citrus trees, the outermost branches of the canopy can be appropriately removed to reduce nutrient consumption and enhance the photosynthesis of citrus trees. Pruning during the flowering period should also pay attention to the good time, the flower buds, this stage of the fruit tree needs more nutrients, and the unpicked orchard does not dare to fertilize, afraid that the fruit will return to green. For fruit trees with a large amount of hanging fruit + weak trees, it is recommended to sell and pick when the fruit is ripe, replenish nutrients in time, and not pick too late, otherwise it will affect the quality of flowers.

During the flowering period, it is easy to use the emulsifiable agent, which is easy to cause the phenomenon of young fruit peel, so it is recommended to use a safer dosage form such as suspension agent and water dispersible granules. If possible, try to choose pesticides or biological pesticides of Chinese herbal preparations, and you can also use them with confidence during the flowering period, without pesticide harm and no resistance.

Look at the weather forecast, pay attention to weather changes, spray pesticides to control pests and diseases 7 15 days before citrus flowering, focus on insect control, thrips, red spiders, canker disease, insecticides + fungicides + red spider drugs + canker drugs + foliar fertilizer. Insecticides (imidacloprid, acetamiprid, thiamethoxam), fungicides (pyraclostrobin, difenoconazole), red spider drugs (acetazole, acetozole, spirodicoxil), ulcer drugs (thiazolezinc, quinolidone, chunleimycin). The specific medication should be based on the actual situation of the orchard, the varieties with strong resistance to canker disease, and the disease does not appear in their own orchards and surrounding areas, so they do not need to add ulcer drugs.

Citrus fruit trees and kiwifruit in the flowering period of the drug management is not the same, kiwi in the fruit tree flowering period to the fruit bagging before, is not suitable for the use of pesticides, especially insecticides, and citrus because it does not belong to cross-pollinated varieties, in the flowering period of fruit trees can use some pesticides to control pests and diseases.

The flowering of citrus fruit trees is generally around April every year, and the common pests and diseases in the flowering period are mainly the prevention and control of aphids, red and yellow spiders, citrus anthracnose and resin diseases.

In addition to paying attention to the damage to flowers and leaves of some pesticides during use, we should also pay attention to the temperature characteristics of the pesticides used, so as to achieve drug safety and good control effect.

Dear, hello, the use of some pesticides should be prohibited in the young citrus fruit stage to ensure the safety and quality of the fruit. The details are as follows: toxic and harmful high-toxicity insecticides, especially silver renting containing high concentrations of organophosphorus, acetamide insecticides, etc.

Pesticides titrated I to III for other fruit trees such as wolfberry, such as fungicides chlorothalonil, Baiwangfeng He Zhaoqing; Insecticides dichlorvos, dimethoate, etc. Chloral hydrate and other drugs that may cause potential harm to human safety and the environment, and are easy to produce illegal residues when combined with citrus. Involving herbicides containing drugs such as fluorohydrozinc, the active ingredient red and blue slacken killer can disrupt the cation balance in the absorption capacity of plant epidermal cells and hinder the normal growth and development process.

Fruit is something that everyone will come into contact with every day, especially the friends who are in the first place have a lot of research on fruits, and the specific elements such as which fruit is helpful to the intestines, how high the sugar content is, etc., are very clear, and the planting of fruits is not easy, because fruits can not be cultivated in greenhouses, and can only rely on the elements provided by the natural environment for breeding, so that the risk of fruit trees becomes greater, not only to prevent various diseases from invading fruit trees, It is also important to keep an eye on the weather and be prepared to protect the fruit trees, which is why most farmers find it more difficult to grow fruit trees.

Citrus is one of our common fruits, because citrus is easy to use, and it contains a variety of vitamins, and it is also one of the favorite fruits of many girls, but what we don't know is that citrus is the most vulnerable period in the flowering period, once it is invaded by the virus, it is likely to be easily eroded by germs, so we must do a comprehensive spraying prevention during the flowering period of citrus, but such delicate flowers should pay attention to medication when spraying.

First of all, the pesticides that can not be used in the citrus flowering period are insecticides containing organic phosphorus, which is the most intense, and will cause serious damage to the flower buds of the feeling, which may lead to the death of a large area of flowers, and even seriously affect the number of fruit hanging at the end. The second is that the sulfur-containing mixture can not be used, although the sulfur mixture has a good effect in the process of preventing pests, but this is only for the winter or early fruit trees have a strong effect, but now the citrus is in the flowering period, the most vulnerable moment, this kind of agent will only accelerate the wilting and death of flower buds, so the sulfur mixture can not be used on citrus fruit trees in this period.

Stone sulfur mixture, as well as emulsifiable concentrates, these agents should not be used, because these agents are very strong, which can easily cause citrus to not bear fruit.

Try not to use some insecticidal agents, and do not use some pesticides that are harmful to citrus, because these agents may limit the growth of citrus, and will also cause some harm to the human body, and will also cause great harm to citrus.

Do not spray stone sulfur mixture, can not use too high concentration of pesticides, can not use organic phosphorus pesticides, etc., these pesticides will cause citrus flowering wilt, will damage seedlings.

For example, stone sulfur mixture, because this chemical fungicide can achieve the effect of reducing production; Then, gibberellin should not be used because this chemical will increase toxicity if used for a long time, which will also affect the normal growth of citrus.

Organophosphorus, sulfur-like agents, toxic, and herbicidal drugs, and some of the more acidic ones are not allowed, because this agent will affect the flowering and fruiting of citrus, so it cannot be used.

Citrus bud maggot is an important pest during the flowering period, after flowering, the flower buds fall off, do not bloom, will seriously affect the citrus production, some orange orchards even only have trees without fruit. The two prevention and control methods are summarized and understood together.