Coriander cultivation does not need to prevent insect pests, is it reliable to do so?

This practice is unreliable, even if the occurrence of coriander pests and diseases is less, but it cannot be controlled.

This is not reliable, and coriander is also susceptible to insect infestations, and once it suffers from insect infestations, then the yield of coriander will be greatly reduced.

This is not reliable, and coriander also needs to be protected from pests and diseases, so as to increase the yield and make the coriander develop better and better.

Coriander likes cold and is a very hardy vegetable that is not resistant to high temperatures. Coriander is generally not planted in the summer, because cilantro grows slowly above 20 and stops growing when it is more than 30. Moreover, the seeds of coriander are more than 30 and almost will not germinate, it has the characteristics of heat dormancy, and the germination rate of coriander seeds without low temperature treatment is very low.

As a green leafy vegetable, although coriander has a short growth period and fewer occurrences of pests and diseases, it is impossible to prevent and control pests and is unreliable. <>

The main insect pests of coriander are:

1, whitefly whitefly is familiar to everyone, a disgusting little white moth, hidden on the back of crop leaves when harmed, sucking the juice of coriander with stinging and sucking mouthparts, often causing the leaves to fade green, yellow, plant growth weak, wilting, its secreted feces are sticky, easy to cause coal stain disease, affect photosynthesis.

and its commoditity.

For the control of whitefly, yellow plate trapping and imidacloprid can be used.

Bifenthroid, fumigants, etc. fumigation.

2. AphidsAphids, also known as greasy insects, honey worms, etc., are a kind of pests that often occur on coriander, sucking coriander juice and causing plant malnutrition.

The young leaves curl and turn yellow, and the parasitism of the coal pollution bacteria secreted affects photosynthesis and can also spread viral diseases.

The control method is basically the same as that of whitefly.

3. Tea yellow mite and red spider Tea yellow mite and red spider are also stinging and sucking the juice of coriander, causing plant deformity and slow growth, small and hard leaves, yellowing of the back of the leaves, rolling down the leaf margins, dying at the growth point, and no new leaves. Tea yellow mites reproduce quickly.

For the control of this insect, it is mainly the use of drugs, such as avermectin.

Liuyangmycin, etc.

4. The harm range of spotted divers is quite wide, especially in the coriander cultivated in the facility, which can cause serious yield reduction if it is not controlled in time.

For the control of this insect, it can be destroyed by cleaning the field and destroying it centrally. Drugs can be used with mycetamine, avermectin, cypin and so on.

Finally, there are underground pests, which use manure that is not fully decomposed, and is cropped all year round.

etc., will lead to grubs.

The occurrence of underground pests such as mole crickets directly bites off the rhizome and causes the whole plant to die. The control of underground pests is mainly not to apply raw manure and trichlorfon.

Mix wheat bran as bait to poison and kill.

Therefore, it is unreliable to say that coriander does not control pests and diseases. Do you think that's the truth?

No, coriander is also very easy to cause insect infestations, and you should also water him more and fertilize it at ordinary times to let it remove diseases.

This is indeed the case, because the taste of coriander is very characteristic and very lethal for those who are harmful.

Many villages with good soil moisture will use Xianglai as a key cultivation target, and like leeks, Xianglai is traded to a particularly wide audience, and many people love to eat coriander. Xianglai is an annual or annual woody plant, which has a unique fragrance and spicy taste, but has excellent practical effects on the maintenance of body functions, such as clearing heat and detoxifying, conducive to urination and promoting digestion. Xianglai is a season of vegetables and fruits, generally speaking, the total yield of 1 mu is more than 1000 catties is not a problem, and the high can reach about 2000 catties.

Why don't many of the rural Shanlai have such high economic benefits? The key is closely related to the fine management of planting management methods. Pandan is a drought-resistant, growth and development adaptable vegetable and fruit, but it does not mean that extensive planting can increase yields and harvests.

Xianglai is a humid and hot spring shade-tolerant crop, can survive in ultra-low temperature, continuous high temperature conditions, but the most suitable temperature for its growth and development or 17 20, to complete the increase in yield, the first thing to choose the right soil layer and pay attention to temperature and humidity records to adjust the supervision. The celery sown in the plan can be carried out at the same time as the seedlings are plucked, and since the vanai is a leafy vegetable, it is <>

It is not recommended to spray all hormone drugs of the growth agent and herbicide, according to the development requirements of different periods of time to flush a certain number of vegetables and fruits special compound fertilizer, Chunxianglai because of the initial temperature of planting is wet and cold, according to the growth and development status can be washed with the compound fertilizer 2 to 3 times, the first time can be Xianglai seedlings grow to 6 to 7cm, 1 mu according to the amount of more than 10 pounds, evenly sprinkled on the road surface and then watered, the second water-soluble fertilizer can be carried out when Xianglai grows to 12 to 15 cm, The number of 1 mu of water-soluble fertilizer can be understood in 15 to 16 catties, the amount of fertilizer application must look at the fertilizer on the vegetables, can not pursue the perfect production amount of too much, the first to carry out crop rotation, the rotation of stubble is best with tomato or long beans rotation.

In the growth and development process of Xianglai, it is most likely to produce Xianglai soft rot, and the main manifestation of soft rot is that on the coriander stalks and coriander leaves, it first occurs in a water-soaked state, and then becomes a light brown dent with uneven spotsEventually, it will rot and stink. If you find that there are signs of soft rot in Xianglai, immediately dig up the diseased plant by root, and sprinkle quicklime powder around the root to avoid the spread of the effect, it is best not to water when the disease occurs to avoid the spread of chemical fertilizer prevention, you can use 72% agricultural machinery streptomycin sulfate soluble granules 3000 to 4000 times liquid every other week, continue to spray 2 times. 10 days before the sale, all fertilizers cannot be sprayed.

If coriander planting wants to have a high yield, it is necessary to ensure the moisture of the soil of Xiangyu Hengcai, and only enough Qingbi to do water supply can make coriander high-yield and high-quality Huikai; When controlling pests, some pesticides can be added appropriately, and it is best to use some low-toxicity pesticides.

The soil must be very fertile, balanced and fertile, the pH should be suitable and the quality should be good, and the germination should be properly promoted, and then more watering and fertilization, which requires pure samples to be high-yielding; Continue to spray disinfectants and nutrient solutions, and then do a good job of scientific management.

When planting, it is necessary to choose some areas with fertile soil and sufficient water, and it is also necessary to do a good job of pest and disease prevention on a regular basis; First of all, in a specific period, it is necessary to carry out the corresponding infiltration and effective insecticide work, spray some insecticides to achieve the effect, or clean up the miscellaneous code grass and destroy its living environment.

<> "Make the soil and farmhouse manure fully mixed evenly, generally the depth of ploughing is 20 30 cm, break the soil, manure, pick out stones, residual straw, etc., the soil is fine, and then make a furrow with a width of 100 150 cm and a height of 20 cm to prepare for sowing in the later stage. Suppress or step on to prevent ventilation, and then sprinkle watering. Generally, the treated seeds can emerge 10 to 13 days after sowing.

If there is no treated seed, it usually takes about 20 days for the seedlings to emerge.

And it is very neat, here, to emphasize, as long as it is not the cause of seeds, it can ensure 100% good seedlings, it is not pure.

Coriander is difficult to grow, especially germination, resulting in an end that it is not easy to produce high yields. It is also difficult to want high yield, which is mainly due to two reasons, on the one hand, due to the troublesome management problems in the planting process, and on the other hand, due to pests and diseases. Compared with the seed planting without rubbing, two coriander trees will be found on one seed after emergence, which will cause crowding of coriander, which is not conducive to growth and development.

In my house, my parents used dustpans.

Fill the coriander seeds and slowly rub the seeds with the soles of your shoes.

Sow. After the coriander seedlings are planted, they should avoid exposure to the sun and too cold and too hot temperatures, and they can be covered with mulch or straw, but do not use farmhouse fertilizer to avoid burning the seedlings. Keep the soil moist. It is best to grow coriander on the land that has not been planted with coriander and celery for several years, and do not replant it.

Pay attention to the selection of varieties, pay attention to the condition of the soil, deal with the problem in time, pay attention to watering, pay attention to the situation of fertilization, and spray pesticides on time for prevention and control.

First of all, when planting, we must choose the soil is more fertile and broad land, and we must use farmhouse fertilizer when fertilizing, do not use the fertilizer bought outside, and often water the plants, but also to prevent the occurrence of pests and diseases, if there are small insects, then we must spray insecticides in time.

The common pests and diseases of coriander include sclerotinia sclerotinia disease, virus disease, spot blight, and root rot, which must be prevented in advance, and the planting land should be selected as rotation land, and the soil should be disinfected.

Because of the spicy aroma of coriander, there are few insect infestations except for a small number of aphids. The main diseases are virus diseases and spot blight.

The prevention and control methods are as follows:

1) Apply biological, physical and ecological methods to control pests and diseases.

The use of onions and garlic in the front stubble can prevent early blight.

The use of deep ditch and high moisture, timely drainage after rain, to prevent flood irrigation, can control the occurrence of spot blight and other diseases.

2) Pharmaceutical prevention and control.

The dust method and fumigation method are preferentially used in the protected area, and spray prevention and control can also be used in dry and sunny weather, and attention should be paid to rotating drugs and rational mixing.

Viral diseases. It can be sprayed alternately with potassium permanganate 800 times or virus K1000 times.

Spot blight. At the initial stage of the disease, spray with 1000 times of 58% methalin wettable powder or 600 times of 75% chlorothalonil wettable powder, or 200 300 times of 50% sulfur suspension.

Aphids are controlled with 500 1000 times of Sophora sophora plant insecticide, or 1500 times of 10% imidacloprid. Sheds per 667 m2

Use 500 grams of aphidcarb smoke agent to close the shed in the evening and light it for fumigation overnight.

One of the major causes of diseases caused by heavy stubble is soil-borne diseases, such as wilting after emergence, long mold, lack of seedlings and broken ridges, etc., which may be related to heavy stubble.

1. Trace element imbalance, different crops for different trace element absorption and utilization will also be different, so in the case of planting the same crop year after year, it is likely to have symptoms of deficiency, which is not only a lack of trace elements or even a lack of large elements and medium elements. 2. The pathogenic microorganisms continue to spread, in the farmland with heavy stubble year after year, the pathogenic bacteria that invade the coriander will continue to accumulate, and usually these pathogenic bacteria will not die for a year, which also leads to a more serious disease in the second year after heavy stubble. <>

3. Heavy crop self-toxicity, the crop's own roots will secrete some toxic substances for continuous accumulation, and after heavy cropping, the production of the same crop will be significantly inhibited.

How to prevent it?

1. It is fundamental to do a good job in crop rotation and avoid heavy cropping. At present, the best way for heavy cropping is to prevent it, crop rotation is the most commonly used method in agricultural production, coriander and Chinese cabbage, cabbage, cucumber and other crops for rotation planting will greatly reduce the occurrence of heavy crop diseases. Due to the shallow root system of coriander, rotation of crops with deeper root systems is more suitable, such as corn.

2. Deep tillage reduces heavy crop diseases. At present, the depth of the plough is basically 15 cm, the bottom layer of the plough is very shallow, and the root system is restricted by the soil for nutrient absorption and utilization, and the depth of deep ploughing can reach 25 cm, which effectively breaks the bottom layer of the plough, and the deep soil turns over to the surface layer can greatly reduce the harm of heavy stubble.

3. The application of organic fertilizer can greatly improve the fertility of the soil to a certain extent, and at the same time increase the air permeability of the soil and greatly reduce the probability of <> occurrence of field diseases

First of all, when planting, we must choose the soil is more fertile and broad land, and we must use farmhouse fertilizer when fertilizing, do not use the fertilizer bought outside, and often water the plants, but also to prevent the occurrence of pests and diseases, if there are small insects, then we must spray insecticides in time. I think that if I can do these things well, I will definitely be able to help reduce the disease of coriander.

When planting coriander, healthy, plump, pest-free seeds are first selected, sterilized and sterilized, then soaked in clean water for 24-32 hours, and then removed and placed in a moist sack for germination.

Choose flat soil that is not easy to accumulate water, strengthen fertilizer and water management, promote plant growth, and enhance disease resistance. After harvesting, deep turning or soaking in water or closing the shed for 7-10 days to kill the surface sclerotia at high temperatures.

When planting, spray pesticides in the soil, and spray pesticides according to the growth of coriander, so that the coriander can grow well.