2 common diseases and 1 insect in wheat will lead to a large scale reduction in yield, how to preven

Plant insecticides should be used, evenly sprayed on plant leaves, and should not be watered during the medication, otherwise there is no effect, you can spray several more times to consolidate it.

The integrated control technology of wheat diseases and insects has medicinal technology, which is divided into two types: watering can spraying and aircraft spraying, but it is currently the most effective way to treat diseases and insects. There is also a reasonable selection of cultivated varieties, balanced fertilization, dispensing, strengthening oil and water management, timely pest control, timely harvesting of wheat can effectively prevent and control pests and diseases, and can also be sown in stages, which also effectively avoids pests.

First, choose wheat seeds of disease-resistant varieties. Second, carry out scientific management and timely pest control. Third, the use of chemical methods for prevention and control. Fourth, wheat can be regularly sprayed with pesticides to remove pests. Fifth, use pesticides to protect wheat from damage from diseases and insects.

Wheat should be stirred with pesticides before sowing, and it is best to use a special blender to stir. After the wheat sprouts, spray pesticides to prevent insects from growing on the leaves. Wheat should be sprayed with pesticides before it reaches maturity to prevent the occurrence of pests and diseases.

Wheat is one of the staple grains in our country. Nowadays, wheat cultivation has entered a critical period. timely sowing of wheat for the germination of wheat; Pulling green; Tillering; and the subsequent bumper harvest has a certain impact.

In addition, improper control of wheat pests and diseases is also caused, and the foliar spraying of paclobutrazol and other chemical agents before and after wheat gets up can effectively shorten the elongation of its internodes, promote the root system to take root, and have a significant effect of putting down and supporting. When aphids are found to be pests, they need to be controlled with agents such as thiamethoxam or pymetrozine, and wheat spiders are controlled with pyridafen or avermectin, pyridafen or alkyne mite.

Clear the ditch and drain the water. There is more rain in spring, and the southern wheat producing areas should pay attention to clearing the ditch and draining the water to prevent waterlogging disasters, and the soil is moist, which will cause the breeding of scab, sheath blight and powdery mildew. It can be combined with manual weeding to clean the trench.

Common diseases in wheat fields are easy to control, or they are hardly the main cause of yield reduction. However, people are paying more and more attention to dietary health, and pesticides are not the only way to control them. Therefore, it can effectively prevent the occurrence of wheat diseases, which is the basic guarantee for the production of pollution-free and green food.

At the onset of the disease, the leaves, leaf sheaths, stems and other positions of wheat will appear like iron rust yellow rust spots, in fact, the scientific name is spores, mainly through the air, and the spread speed is very fast, the last of these spore piles will turn black, affecting the yield of wheat. The characteristics of wheat yellow dwarf disease, no matter how big the chemical fertilizer, just like eating iron or like being poisoned by herbicides, is not long, yellow and short, until the time of harvesting, you can also see the wheat gaps, never grow vigorously, the seedlings can not cover the ground, and the yield per mu is two or three hundred catties of wheat.

Sheath blight, a fungal disease, in recent years, has become one of the common diseases in wheat planting areas, after the disease, if not in time, it will cause a reduction of about 10% in yield, and the serious can reach half, so the disease should be noted. In view of the place where embroidery disease and dry hot wind occur, tricyclazole and other pesticides can be sprayed in time in the early stage of wheat embroidery disease, and foliar fertilizer can be sprayed on the basis of spraying insecticides and fungicides to prevent the occurrence of dry and hot air in combination with the prevention and control of other diseases and insects at the panicle stage.

Agricultural control. Select good varieties with good yield, strong resistance (tolerance) or mild susceptibility to diseases, increase the application of well-rotted organic fertilizer, adopt formula fertilization technology, cooperate with the application of nitrogen, phosphorus and potassium fertilizers, and apply nitrogen fertilizer without bias to enhance disease resistance. Sow at the right time, avoid early sowing, and reduce the sowing amount appropriately.

Remove weeds from the field in a timely manner. Drain water in time after rain.

Pests and diseases should be prevented, and attention should also be paid to watering, some pesticides should also be sprayed, and regular cleaning should also be done, attention should be paid to watering problems, etc., so that it can be well controlled.

First of all, use completely rotted manure. The manure that is not completely decomposed contains coliform bacteria, nematodes and other bacteria and pests, and the direct use of manure leads to the spread of pests and diseases, crop diseases, and also has an impact on the human health of eating wheat; When unrotted organic matter is fermented in the soil, it is easy to breed pathogens and insect pests, which also leads to the occurrence of wheat diseases and pests. Therefore, it is essential to use completely decomposed manure.

When applying chemical fertilizers, we should pay attention to the coordination and balance of nitrogen, phosphorus, and potassium nutrients. If the soil fertility is high and the organic matter content is high, the nitrogen fertilizer application rate should not exceed the phosphorus fertilizer application rate; If the soil is poor and the organic matter content is low, the amount of phosphorus fertilizer should not exceed the amount of nitrogen fertilizer.

Precision sowing: Mechanical, precision and semi-precision sowing technology should be vigorously promoted to achieve uniform sowing, consistent depth and strong air permeability, so as to achieve full seedlings and complete seedlings, and is conducive to improving the utilization rate of photosynthesis.

Irrigation & Drainage: Fields are planted immediately after sowing"Three ditches', so that the ditch and ditch are connected, so that drought can be irrigated, and waterlogging can be drained. After the beginning of spring, the three ditches should be dredged frequently, so that the bottom of the ditch is not waterlogged when it rains, and the fields are stopped from drying up when it rains, so as to reduce soil moisture and prevent waterlogging hazards such as premature root senescence.

Frequent weeding: a combination of cultivated weeding and chemical weeding should be adopted. Chemical weeding should select efficient and safe on-road drugs according to the type of weeds to prevent pesticide damage and avoid the impact of residues on the next crop.

To prevent wheat wilt, we should also pay attention to the seedling stage, pay attention to the scab at the flowering stage, pay attention to the control of aphids at the grain filling stage, and pay attention to the fertility of the soil.

The land must be properly regulated and weeds removed. Choose the right seeds for sowing. Scientific methods of fertilization and watering. Be sure to prevent diseases in advance and choose the right pesticides to spray.

First of all, when sowing wheat, the wheat can be sun-drenched, which can be sterilized and insecticidal, and some insecticides can be sprayed during the wheat development period, and weeds can be pulled out in time, and they can be maintained and maintained, which is easy to manage.

1.Common insect pests of wheat include leaf rust, root rot, etc. 2.

Root rot generally occurs in rainy seasons, so root rot prevention should be done with proper drainage and fertilization during rainy seasons. 3.Leaf rust mostly starts in May, and pesticides and wheat nutrients should be sprayed in time.

After the occurrence of pests and diseases, it should be prevented in time, usually to do a good job of prevention, to ensure the soil fertility planting temperature, planting humidity, must be selected according to the pests and diseases to choose the right insecticide, should pay attention to the time of use, should be the right medicine, do not use when the temperature is relatively high.

It is best to remove insects when the wheat emerges for about 20 days, because the insect pests are not very serious at this time, and the pests are all shown, which can be written and removed at one time, and will not have much impact on the wheat.

There are many aspects to the control of crops, which require insect control before planting and insect control care after planting. You need to buy a special wheat pest control medicine in the market, and you need to go to him regularly.

When selecting seeds, we must choose high-quality people, and we must ventilate more, fertilize more, and we must water more to maintain humidity.

Some pesticides can be sprayed. Pesticides can kill pests on wheat.

According to the growth and development characteristics of wheat, the whole growth period of wheat can be divided into seedling stage, green turning stage, jointing stage, tree emergence stage, flowering stage, grain filling stage and maturity stage. Wheat seedling period occupies the longest time in the whole growth period, about 5 months, in the long seedling growth and development process, not only easy to suffer from natural disasters such as low temperature and cold, rain and snow, but also susceptible to the harm of various pests and diseases, there are many diseases in wheat seedling stage, among which the most common, the most serious diseases are as follows.

<> Wheat scab mainly affects the roots and stems of wheat seedlings in sections 1-2. The roots and underground stems of the diseased plant turn black and rot, and the base of the stem turns black and rot after the heading, forming a typical type"Blackfoot"Symptom. The basal leaf sheath is peeled off, and a gray-black hyphal layer is formed inside, and punctate protrusions (roundworm shells) are produced in the later stage.

After the wheat sprouts, the lesions surround the stems, causing a large number of plants to premature senescence and forming a large area of withered white ears. Wheat root rot mainly harms the roots of wheat, and can also harm the leaves, stems and ears of wheat, and the sprouts and roots of wheat are mainly harmed at the seedling stage, causing the roots to turn brown and rot, and the plants with light disease grow thin, reduce tillering, and the seedlings with serious disease die early.

Wheat occurs earlier, more in the winter high temperature, too much nitrogen fertilizer will occur more, the wheat rust that occurred in the past few years is more serious, so special attention should be paid to the three commonly used azole fungicides are wheat rust agents, benziconazole strobin, fluorine, E, etc. are effective, if the resistance is serious, the pesticide rotation can appropriately reduce the spread of the disease, wheat rust occurs in various periods, and the timely prevention and control effect is good. When sowing, you can choose to use 3% benzoylmethaconazole or siliophosis suspension seed coating agent, and the dosage per mu is 20 grams of seed dressing; At the seedling stage, you can choose to spray the base of the stem with 20 ml of 30% benzoylpropiconazole emulsifiable concentrate, 15-20 kg of water or 10 ml of 43% tebuconazole suspension or 10 ml of 24% thioframide suspension.

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To ensure soil fertility, you can choose the soil with good porosity and good drainage, we must do a good job of prevention, use pesticides to dress the soil, choose seeds with good disease resistance, do a good job of ventilation, pay attention to the temperature of planting, should choose the right insecticide according to the type of pests and diseases, and pay attention to the time of using insecticides.

You can regularly spray wheat seedlings with anthelmintic drugs, give them nutrients in time, observe their growth status, if there are pests and diseases, they should be dealt with in time to avoid further deterioration, properly spray organic fertilizers and trace elements, and also timely top dressing the roots of wheat seedlings to promote their growth.

To prevent underground insect pests, to prevent root rot, to prevent pests and diseases in time, to spray pesticides, spray fruits.