After heavy rain, the continuous high temperature has no effect on the medication

If you don't have medication before it rains, it can be useful after it rains.

Windy weather is easy to poison: when the wind blows, it is not suitable to use medicine, and the wind is easy to make the sprayed powder or fog droplets flutter with the wind, which can not be evenly attached to the surface of crops, and will also float on the pesticide applicator and is easy to be poisoned.

Pesticide loss in rainy weather: spraying rain on rainy days can directly wash away the unfair effect of pesticides and will also cause water pollution, the general agent used for seed dressing is less affected by rain, and the emulsifiable pesticide can form a layer of oil film on the surface of the crop, which has a certain resistance to further rain erosion, and powder and wettable powder are the least resistant to rain washing.

Pharmaceutical decomposition in high temperature weather: high temperature will accelerate the decomposition of pesticides and volatilization of pesticides, so high temperature should not be sprayed, because crops have strong metabolism in hot weather, leaf stomata are open, and pesticides can easily enter the crop body and cause pesticide damage.

In high temperature weather, the effect is low, the high temperature weather agent with heavy fog or dew is easy to be diluted by water and the effect of cheap medicine is reduced, in addition, when the dew is not dry in the morning, the temperature is relatively low, and the pests have not come out to move, so the spraying effect is not good at this time. Best time to apply the pill: 8 a.m

00 10:00, 5:00 p.m. 7:00

00。Avoid mixing well water with medicine, because well water contains minerals such as calcium and magnesium, which is easy to react with the agent.

After heavy rain, do a good job in the prevention and control of pests and diseases in time.

In mid-June, the heavy rain for many days had a great impact on the normal production of crops: crops in some low-lying areas were flooded, crop seedling leaves were close to the ground, vegetable sheds were destroyed and lodging, and leafy vegetable leaves were broken by rain. After the heavy rain, the weather will immediately turn clear, and the high temperature and humidity environment is very conducive to the occurrence and spread of fruit and vegetable pests and diseases.

In order to do a good job in the normal production of crops, the following opinions are hereby put forward:

For the flooded vegetable field, the ditch should be opened in time to remove the stagnant water in the field, and the furrow surface should be appropriately raised to reduce the water level of the vegetable field, promote the growth of plant roots, and at the same time carry out the cleaning of the vegetable field in combination with field agricultural operations. Vegetables in protected areas should be opened in time for ventilation to reduce the humidity in the shed.

If the rain is sunny and sunny, it should be covered with shade nets or furrow surface grass in time to restore the active water absorption function of the root system as soon as possible to avoid water loss and wilting of the plants. For the vegetable field with weak growth or partial dead seedlings, the seedlings should be checked and replenished in time, and once the plants are restored to vitality, they should be applied in time with fast-acting fertilizer, and foliar topdressing can also be carried out to improve vegetable resistance and promote the recovery of vegetable growth.

It is necessary to be vigilant against the epidemic of high temperature and high humidity diseases such as melon vegetable blight, bacterial wilt of nightshade vegetables, and bacterial soft rot of cruciferous vegetables, and use drugs to prevent them as soon as possible. For the prevention and control of epidemics, 1000 times of 64% oxafrost and manganese-zinc ultra-fine wettable powder, or 2500 times of 50% enazolemorph wettable powder can be used in the early stage of the disease; To prevent and control bacterial diseases such as bacterial wilt and soft rot, it can be sprayed with 500 times of 20% thiamium copper suspension or 1000 times of 50% chlorobromoisocyanuric acid wettable powder in the early stage of the disease. After the application of pesticides to vegetables in protected areas, the shed should be opened for ventilation to reduce the humidity in the shed.

Pest control, with a focus on leafy and legumes. At present, the bean borer has been harmful to cowpea, such as cowpea in the first flowering stage, cyanur trifluorochloride can be used.

It depends on what period the corn is in, whether it is at the seedling stage or after the fruit is set, and the impact of different stages is also different.

There is no effect, because as long as there is no rain for 4 hours after normal application, the weeds will basically absorb the pesticides.

The safety of stem and leaf treatment in maize after seedling in maize field 3 5 leaf stage, especially the mixture of Yu Nongle and 2,4-d butyl ester can not be applied after the 5 leaf stage of maize. The weeds in the field are basically complete, and most of the weeds are sprayed at the 2 4 leaf stage. If the application period is too late, the weed resistance will be enhanced, and the weeding effect will be affected.

When spraying, the temperature is required to be 15 25, the relative humidity of the air is more than 65%, and the wind speed is less than 4 meters per second. Select the spraying equipment and nozzle as required, and apply the spray according to the operation specifications.

Notes:1Carry out regular spraying according to the prescribed dose, and do not increase the dosage at will.

2.The "secondary dilution method" is adopted, which is first prepared into the mother liquor, and then the water is evenly sprayed.

3.Generally, the appropriate period for the use of post-emergence herbicides in corn should be after 2 leaves of visible leaves of corn to before 5 leaves of visible leaves. If the drug is used at the 5 and 7 leaf stage, it should be used between the corn rows to avoid spraying the liquid into the heart leaves.

4.Some corn post-emergence herbicides are more sensitive to sweet corn, seed production, and inbred lines, so do not use them. It should be used strictly according to the instructions on the herbicide label.

5.Corn treated with organophosphate agents is sensitive to post-emergence herbicides. The interval between the two drugs is at least 7 days.

6.Use a motorized sprayer to apply pesticides, do not increase the amount of pesticides without authorization, and prohibit repeated spraying.

7.Before using herbicides, pay attention to cleaning the sprayer that has been sprayed with organophosphorus pesticides.

8.After 4 p.m., the drug effect is good, and the drug should be avoided in continuous hot weather (temperature over 35).

High temperaturesDry weather has adversely affected maize crops in parts of the European Union, with the maize crop in France, the top producer, particularly at risk. The corn crop has now entered the critical pollination period.

Like spring barley, the maize crop is likely to suffer more than wheat and winter barley, as the latter two crops were nearing maturity by the time the heat wave hit at the end of June.

The US Department of Agriculture on Friday lowered the EU corn production** data by more than 2 million tonnes to 65.8 million tonnes due to declining yield potential, which is well below the previous year's record 75 million tonnes.

High temperatures mean that a large amount of water vapor evaporates. Secondly, high temperatures mean that the ground air has a huge amount of energy moving upwards. Creates a strong air convection. This kind of severe convective weather will send a large amount of water vapour into the air and form rain. Therefore, it will rain in hot weather.

If it rains after the fight, it is generally required to make up for it once; If there is no heavy rain for more than 4 hours, there is generally no need for refill.

Related to pesticide varieties, it generally rains 6 hours after pesticide spraying, and there is no need to respray; It is also related to the amount of rainfall, if it is used after medication, it will occur.

If the rainfall is less than 10 mm at one time, it is not necessary to spray it again after the rain, and if the rainfall reaches more than 10 mm at one time, it must be re-sprayed after the rain.

Spraying. Systemic pesticides are generally more resistant to rainwater washing, such as enoylmorpholine, and rainfall has little effect on the efficacy of the drug after 1 hour of application.

Sound; E-BaoTech (oxazolidinedione and mancozeb mixture) was administered for 4 hours, and 80% was 90%.

Pine herbicide is a selective post-emergence herbicide used for stem and leaf treatment of weeds at seedling stage. It is mainly used for rice, soybean, peanut, wheat and other crops to control broad-leaved weeds and sedge weeds, and is ineffective against grassy weeds. The best application time for herbicidal pine is 1-2 compound leaves of soybeans, 2-4 leaf stages of broad-leaved weeds (generally about 5 cm in height), 480 grams of herbicidal pine (herbaceous dan, water and land) with 2-3 liters per hectare.

Soil moisture, air humidity is suitable, weed seedlings are small with a low dose, drought, weeds or perennial broad-leaved weeds are used at a high dose, the application should be in the morning and evening with low temperature, high air humidity, wind hours, do not rain within 8 hours after application, rainfall will reduce the effect.

The continuous rainy and sunshine weather has an adverse effect on the growth and development of rice: first, it causes the root system and leaf growth of rice seedlings to grow slowly, the seedling growth is weak, the transplanting time is delayed than usual, the green time after transplanting is prolonged, and the growth process is delayed by about 10 days compared with the normal year. Second, rainy weather is easy to make the paddy field water deeper, resulting in soil hypoxia, hindered physiological metabolism of rice roots, decreased vitality, weakened fertilizer absorption ability, slowing down the leaf emergence rate of rice, reducing tillering per plant, and insufficient group growth.

Third, excessive rainfall is easy to cause irrigation and drainage, and fertilizer loss leads to insufficient nutrition of rice. Fourth, there is a lot of rain, which is very beneficial to the epidemic of diseases such as rice blast and the migration of "two migration" pests.

The yield will be reduced, and the harvest will be reduced by more than half in the event of heavy rain during the full heading flowering period.

Rice is pollinated at flowering, generally between 10 a.m. and 3 p.m., with delayed or intermittent pollination on rainy days, as a result of the long-term evolution of rice. If rice is subjected to continuous rainy weather or the temperature is lower than 23 degrees Celsius for three consecutive days during the flowering period, the yield will be seriously affected. As long as a heavy rain does not break the rice, blow it down or be flooded by the wind, it generally has little impact, and the rice is a self-pollinating crop, and the high humidity environment after the rain is also conducive to the fertilization and fruiting of rice pollen.

However, the conditions of high temperature and high humidity are easy to cause the occurrence and epidemic of rice ear neck blast, sheath blight, and rice koji disease, which can be prevented and controlled by tricyclazole + chunleimycin + Jinggangmycin, and the potassium dihydrogen phosphate solution added, and then added to the drugs such as brassin, which promote flowering and fruiting, are generally not a big problem after taking these measures.

There is a big impact.

Wading in the water does have a great impact on the vehicle, especially the engine and transmission failure.

The air filter of the engine is an important part of the car, once the water enters the car, it may cause serious mechanical failure, and it is easy to cause the phenomenon of connecting rod bending, cylinder smashing and so on. At this time, do not use the engine, once started, the water will enter the engine combustion chamber, and in serious cases, the engine may be scrapped. If the exhaust pipe behind the car is immersed in water, the exhaust pipe is flooded and the car cannot be opened.

Therefore, when driving, you must pay attention to the depth of the water, and if you find that the water may not pass the air filter, you should try to detour as much as possible, if you can't detour, you can use a rubber pipe to connect to the exhaust pipe, and the nozzle is facing up, so that the water can not enter the exhaust pipe. After collecting the car, wipe the rainwater on the engine in time and check whether there are cracks in the generator belt, so as not to shorten the service life of the car.

The main fault after the automatic transmission is flooded is that the vehicle does not go away from gear and shakes when refueling. If not eliminated in time, it may lead to damage to the friction plate and automatic belt. At this time, the transmission oil should be replaced, and if the solution is not complete, the transmission should be disassembled for cleaning.

In addition, it is best to replace all brake fluid, transmission fluid, engine oil, etc.

In addition, brake fluid tends to fuse with water, so wet weather during the rainy season can cause a lot of water to accumulate on the brake tank and get into the brake fluid. If moisture enters the brake fluid, the high temperature generated by the braking process will cause a large amount of water vapor, and the compressibility of the gas will cause brake failure or even failure. Therefore, after continuous rainy days, it is necessary to pay attention to the oil check of the brake system and the deflation treatment of the brake system, and check the brake fluid frequently.

At the same time, the brake disc is easy to rust in wet weather, resulting in abnormal braking noise. At this time, the owner can start the vehicle, step on the brake a few more times, and the rust on the general brake disc can be worn off. If the vehicle is started to produce a similar astringency feeling of hand brake is not loose, it may be because the brake shoe or brake caliper is stuck with the brake hub or disc, at this time, as long as you step on the accelerator and open for a while, you can hear a "pop" sound, the brake pad and the brake disc are separated, and you can drive normally.

After a heavy rain, car maintenance must not forget to wash the car and do chassis cleaning.

Experts recommend washing as many cars as possible during the rainy season, as the acids in the rainwater have a very corrosive effect on the paint surface of the car. If it is not treated in time, over time, the paint surface of your car will lose its luster. The most effective way to protect the paint surface of the body is to wax and glaze the body, which can prevent the paint from fading and aging.

After heavy rain, the bottom of the car should also be cleaned in time, otherwise it may lead to sludge accumulation on the side of the wheel cavity and chassis of the vehicle, which can easily hide moisture in it and cause rust, and the wheel cavity may even loosen and perforate. Therefore, it is necessary to pay attention to the cleaning and anti-rust treatment of the automobile chassis, and also pay attention not to wash the body and chassis with alkaline cleaning liquid. If the original car has not done chassis sealing, it is best to make a chassis sealing.

In addition, regularly inspect and clean the drain holes in the doors and underbody, and check the humidity of the interior covering.