What can be done to effectively prevent pests and diseases during the citrus flowering period?

The use of carbendazim for sterilization and the addition of certain pesticides for insecticide can avoid citrus pests, or the use of bagging to wrap the small fruits that have begun to bear fruit in bags to prevent pests.

Citrus firearm pest prevention drugs, in addition to some pesticides will be injured when used, but also pay attention to the temperature characteristics of the pesticides used, so that the safety and control effect of the drug play a good role. The weather temperature is not very high when the citrus trees bloom every year. The temperature sensitivity of pesticides (such as mites) in the selection of fruit tree pest control drugs is suitable for use in low temperature environments.

Kills aphids and other winged pests better than other pesticides.

You should water and fertilize more, and you should also spray some pesticides or insect killers regularly, and you should also clean up the environment regularly.

I think that at the time of flowering, the citrus should be sprayed with pesticides for pests and diseases, and the branches and leaves should be repaired frequently, and I think that will do.

In the citrus flowering period, should be scientific and reasonable fertilization to control water, effectively prevent plant diseases and pests, fertilizer selection of nitrogen fertilizer and phosphate fertilizer can prolong the flowering period, improve the fruit setting rate, appropriate amount of watering, keep the soil moist.

Due to the late sales of many sugar oranges last year, some growers basically did not clear the garden, it is expected that this year's pests and diseases are still difficult to control, the base of red spiders is also relatively large, I see a lot of citrus flowering red spider base is very large, we generally recommend that citrus mites are divided into different types such as full claw mites, rust mites, leaf mites, etc., different types of mites occur in law and living habits, so in the prevention and control of various mite pests according to the hazard characteristics of different prevention and control measures. Spider mites can occur up to 20 generations a year, with a very strong super reproductive ability, the peak of reproduction has been female can lay more than 30 eggs a day, whether it is a new little, young leaves or fruits, will be widely affected by it.

<> citrus red spider as a common and frequent pest in citrus pests and diseases, belongs to mites, will occur throughout the year, to absorb leaves, young fruit in the sap for food, said to cause leaves to wither yellow leaves, fruit drop, directly cause the tree to weaken, affect the effective prevention and control of red spider this number one pest, fruit farmers friends generally start from citrus germination, every seven or eight days to the orchard to check the annual leaves, as long as the leaf of the red spider reached 3-5 leaves, It is necessary to adopt 3 Avi in time. Citrus is very susceptible to spider mite infestation, so be sure to do a good job of control. If you want to do a good job in the prevention and control of citrus red spiders, you must be familiar with the habits of citrus red spiders.

Citrus red spider, in some places it is called citrus full-clawed mites, and in some places it is called tumor skin red.

Spider mites occur regardless of time of year and season, and if they are not well controlled, they may occur all year round. It is mainly a million mite. If it sucks on the branches, leaves, fruits, etc. of the plant, the surface of the sucked object will show countless gray-white spots.

And it is easy to break and fall off. Although citrus spider mites are present throughout the year, the time period for causing damage is generally from May to June, and September to October is the time when the number of red mites is the largest and the most harmful. Due to the higher temperature of the weather in July-August, when the temperature exceeds 32.

Chemical control. Choose biological sources with low residue and short residual effect, mineral pesticides. The annual pesticide application amount is less than 5 times, and the number of pesticide applications is controlled within 2 times. In strict accordance with the requirements of citrus green food production, select the right pesticide varieties.

After fruit picking, the microbial agent has the effect of increasing the organic matter content of the soil, forming the soil aggregate structure, balancing the soil cultivation root system, retaining fertilizer and water, resisting waterlogging, and enhancing the tree body.

The flowering period of citrus can be sprayed in advance to achieve the purpose of control. Spraying prevention can be carried out with spiroethyl ester and ethoxylated vegetable oil, citrus needs more nutrients during the flowering period, and proper supplementation of nutrients will help to produce robust flowers and improve fruit set.

Citrus flowering period is divided into early flowering period and vigorous period, Xie flowering period, early flowering period (flower buds) and Xie flowering period can be moderately used drugs, mainly to bypass the vigorous period of the use of drugs, because the drug is more sensitive to the flower is easy to lead to serious flowering, endangering the production. The pests and diseases that appear in the flowering period are only thrips, gray mold, and scabs, and most of the pests and weeds can be prevented before flowering and early flowering.

After fruit picking, the microbial agent has the effect of increasing the organic matter component of the soil, forming the soil aggregate structure, balancing the soil cultivation root system, retaining fertilizer and water, resisting waterlogging, and strengthening the tree.

When pruning in winter, all the branches, leaves, and serious pests and diseases of the tree are removed out of the garden and destroyed, and the weeds are cleared, and then the medicine is sprayed to clear the garden, and the garden is very important, mainly to remove all the diseases, insects and weeds for wintering, so that the second year of the pests and weeds is serious and difficult to prevent. It can be used to make stone sulfur mixture crystals or homemade to carry out garden cleaning, which is insecticidal and sterilization, and affordable. At the beginning of spring the following year, the flower buds are sprayed again before they have germinated.

Flower buds germinate about one centimeter and begin to be prevented with drugs, the main prevention of citrus psyllids, leafminers, leaf-eating insects, gray mold, scabs, thrips, ulcers, anthrax, sand skin, etc., looks diverse, can be divided like that, the use of drugs to divide pest drugs and pest fungicides, pest drugs with killing adults and insecticidal eggs, fungicidal drugs with ** protection of compound drugs, so that the drugs will not be diverse, right!

Botrytis is easy to produce as long as it rains, and can be treated with the help of flower shaking, and drainage as soon as possible can prevent fungal bacteria from growing and pests and diseases. Then like thrips, scabs, and sand skins are all more effective in the early flowering and spring shoot germination and hair extraction periods, and all of them are preventive measures in the middle and late stages. At this time, three times to carry out prevention, every 7 10 days of spraying, the third time has the buds blooming, the leaves, to prevent the disease, insect and weed pests to be prevented, the flowering period does not need to worry about diseases, insects and weeds, but the use of drugs often in the field to pay more attention.

During the flowering period of citrus, you can spray special pesticides to control citrus pests, and of course, using insecticidal lamps is also a very effective way to kill pests and diseases.

When flowering, they should be allowed to absorb enough sunlight and should be watered more, only then can they achieve the environment they want, and they can be sprayed with some insecticides, so that they will not welcome other insects and will not harm the roots.

During the flowering period of citrus, it should be effectively protected from diseases and insects: if the flowering period is properly managed, there will be more flowers, and there will be more fruits in the later stage, so as to ensure high yield in the later stage; Pest control, emphasizing ground spraying, not only attention to the spraying on the canopy, but also to sanitize the ground of citrus; The drug must be started when the citrus buds are just white or 2 to 3 mm in diameter, and should not wait until the flowers are fully opened.

Citrus with sweet, juicy, unique flavor, deeply loved by consumers, citrus leaves, evergreen flowering period is longer, usually from the end of flowering, can last about 15 to 20 days, citrus tree is one of the characteristics of fruit trees in southern China, due to different geographical environments, large temperature differences, citrus fruit varieties, flowering period is inconsistent, there are early and late, such as Jiangxi, Hunan, Hubei, Zhejiang and other places, the flowering period of citrus trees is generally in April to May. Sichuan, Fujian, Chongqing and other places in China generally bloom from March to April, and then go south, Guangdong, Guangxi, February to March citrus into the flowering period.

During the flowering period of citrus, what pesticides are sprayed to control pests and diseases? What if it affects the flowers? Citrus is the fruit of the Rutaceae family, generally referred to as citrus, and can be subdivided into orange, mandarin, kumquat, citrus, grapefruit, citrus aurantium and other varieties.

The ability of citrus trees to tolerate low temperatures is not the same, and citrus trees are generally between degrees and 37 degrees, which is the most suitable growth temperature. The optimal air humidity is 75% and the temperature is 17 20. The consequences of high and low flowering rate of citrus are well known, due to the influence of temperature, improper spraying of flowering pesticides, can also affect the normal flowering of citrus fruits.

There are many kinds of diseases and pests during the flowering period of citrus, and the common pests and diseases are psyllids, red spiders, bud maggots, etc. Common diseases usually have anthrax, ulcers, brown, scab and other diseases, which will have a very bad impact on the yield and quality of citrus, so in the citrus budding stage, we should also pay attention to prevention and control, pay attention to observe the spraying of drugs in advance, to achieve the purpose of prevention and control. Citrus psyllids are a natural vector of citrus huanglongbing, which is extremely harmful to citrus.

Once citrus huanglongbing appears, there are basically not many ways to save it. Citrus huanglongbing is a devastating disease. Pre-emploids are an effective way to prevent citrus huanglongbing, and fluoronitrile, imidacloprid, spirethyl ester + ethoxy vegetable oil can be sprayed in advance.

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Be sure to disperse some pesticides in time, and then you should also choose the right insecticides and herbicides, prune the branches and leaves in time to avoid rotting, or you can use some plant nutrients.

You need to choose the right variety, you must pay attention to the surrounding soil conditions, pay attention to whether there are weeds, you need to clean up the weeds, you can introduce some beneficial insects, which can drive away pests well.

Virus-infested branches and leaves should be removed, infected flower buds can also be manually removed, spraying can also be carried out, remember not to use high concentrations of pesticides to control insect infestations.

Pay attention to weather changes, in the first 7 to 15 days of citrus flowering, spray the medicine to control pests and diseases, mainly to control bud worms, canker disease, etc., and focus on the prevention and control of insects when flowering.

June is a critical period for the prevention and control of citrus pests and diseases and sunburn fruits, so what are the diseases of citrus and how to choose pesticides? Commonly used drugs such as prochloraz, phenyl ether methyl devasion, mancozeb and other commonly used drugs can be used for prevention and treatment, and the specific dosage can be used with reference to the instructions. In early May, rust mites are transferred from spring shoots to fruits, the beginning of a large number of reproduction, according to the appearance of black peel fruit in the orchard last year, the hanging fruit trees were inspected for insect conditions, and there was no citrus orchard with hanging fruits.

Acitretazole + lice carben urea has a good effect, and the best time for prevention and control is used.

Prevention and control of pests and diseases, advocate prevention first. The first is to enhance the tree strength of fruit trees and increase their resistance to insects and diseases. Comparatively speaking, weak trees are more likely to be damaged by pests and diseases.

For example, increase organic fertilizer, reduce inorganic fertilizer, and improve soil fertility. For the purpose of killing insecticidal eggs and larvae. Reasonable ratio of pesticides, pesticides alternately, can generally be prevented.

Try not to use chlorine-containing pesticides for insecticides, which will have a certain impact on the quality and prevent sugar and color. When using pesticides, they often have a strong sense of randomness or do not pay attention to the growth and growth of fruit trees and only dispense drugs according to experience, so that there will be excessive concentration of pesticides and pesticide damage.

<> pesticide damage caused by field operations, such as spraying glyphosate herbicides to cause drift damage to tree leaves, and pesticide damage caused by the drift of herbicides such as dimethyltetrachloride, herbicides are common in field management. Increase the use of organic fertilizer and bio-organic fertilizer. Strengthen the tree, do a good job of fertilizing in March, June, and September.

Advance prophylaxis of Chinese herbal preparations is alternated. Frequency of pesticide use: Some pests cannot be completely eliminated, so try to minimize the use of pesticides when the pest level allows.

The long-term use of chemical agents promotes the lack of organic matter and the reproduction of beneficial bacteria in the soil and growth environment, resulting in the flood of harmful bacteria, so that fruit farmers continue to use excessive amounts of chemical pesticides, and a vicious circle produces pesticide damage.

Common insect pests include red spider math maggot and sagittal pest. These are all factors that seriously affect the growth of citrus and must be dealt with carefully.

Citrus diseases mainly include citrus canker, anthracnose, scab, macular disease, black spot, soot disease, resin disease, vitiligo, etc. The appearance of these diseases, which make citrus ugly, reduce yields, and in some cases even fatal, cause the death of citrus trees.

In the process of growth and development of citrus main pests and diseases and control of citrus, due to the influence of pests or adverse environmental conditions exceeding its adaptability, its normal growth and development is inhibited, and its metabolism is changed, resulting in reduced yield, poor quality, and even death, which brings great losses to the economic value of citrus and seriously affects the economic income of growers.

Common types of citrus pests and diseases are:

1. Scale insects and scale insects: they are harmful to the branches, leaves and fruits of citrus. Adults and nymphs suck the sap of tissues, and the damaged tissues cannot fully develop, and the tree weakens, causing leaf and fruit drop, affecting fruit quality, and inducing soot disease.

In Nanfeng orange area, there are mainly blowing cotton scales, black spot scales, and chaff scales.

2. Citrus anthracnose: citrus anthracnose often causes a large number of citrus trees to lose leaves, dead shoots and fruits, resulting in the weakening of the tree, the decline of products and quality, and even the death of branches and plants.

3. Red spider: mainly harms citrus leaves, branches and fruits. When the damaged leaves and fruits are severe, they turn gray and white, lose their luster, until they turn yellow and fall off. The peak seasons are from April to June and September to November.