The recent high temperature and rainy weather have caused a high incidence of diseases, weeds and weeds. Not only this, but the weather also affects the efficacy of pesticides, which is a great inconvenience for disease prevention and pest control. Do you know that high temperature and rainy weather are the most suitable pesticides? When is the best time for spraying? Do you want to change the concentration? Plus no adjuvant? In the face of many problems, the author has summarized several precautions for applying pesticides during high temperatures and rainy days.
Pay attention to the weather.
In general, the effect of applying the pesticide after rain is better than the rain after application or the rain while spraying. Therefore, we must pay attention to the weather conditions and choose the best spraying during the weather to improve the control effect. In addition, the application time should be selected according to the pest's activity rules. For example, some nocturnal pests, such as leafhoppers or night moths, should be applied in the evening.
Improve pesticide utilization
When pesticides are used in open-air crops, rainwater washout should be selected, and the ratio of emulsifiable concentrates should be appropriate. These pesticides have a longer residual time on the plant surface, while powders, water agents, etc. are relatively poor. Can add detergent, tea dry leaching liquid adhesion substances such as adding pesticides, can enhance the pesticide in the crops and insect pests on the body adhesion, thereby enhancing the control effect. The method is: add 50-75 grams of detergent for every 50 kilograms of liquid medicine, and apply it after stirring evenly. Note that it is best to use it now. Washing powder, tea dry leachate generally should not be mixed with acidic pesticides.
For ease of use, special synergists such as superfluids, silicones and the like can also be used.
Choose the right medicine
Quick-acting pesticides. For example, insecticides such as leaf insect nets, peony pines, enemy kills, fast killing spirits, deltamethrin, etc., have strong contact and fumigation effects, and are applied for 1 to 2 hours or 4 to 5 hours after application. The pests can be killed afterwards.
Systemic pesticides. Systemic pesticides can enter the plants through the roots, stems, and leaves of crops, and they are transported to other sites and function within a short period of time. Such as rust azole, triadimefon, mad kill and other fungicides, 4 to 5 hours after application, 80% of the active ingredients were absorbed into the organization by the crop, and less due to rain leaching and loss of medicinal properties.
Microbial active pesticides. Commonly used microbial pesticides such as cyanobacteria and Beauveria bassiana are more favorable for the germination and reproduction of their sporophytes under high humidity conditions. The application of such pesticides on cloudy and rainy days can give full play to their insecticidal effects.
Washable pesticide fungicide. Instralagonamycin, chlorfenone, and sulfasulfuron have good resistance to rain, and even if they encounter showers after 1 to 5 hours of application, they will not be affected by scouring.
Appropriately reduce drug concentration
The efficacy of most pesticides will increase with the increase of temperature, and the efficacy will also be enhanced. Therefore, the use of chemicals should be reduced during the high-temperature season. In particular, the use of hormones should be especially noticed. The weight of the pesticides can easily lead to injury. happened. Therefore, it is necessary to reasonably adjust the concentration of the drug according to the temperature change.
Pay attention to spray quality
Spray method. It is generally required that the quality of spray mist is evenly distributed and the coverage is high. It is advisable to not wet the surface of the plant. This necessitates the use of a sprayer with good atomization and reduces the waste of liquid chemicals. At the same time pay attention to spraying a comprehensive, in particular, some pests like to lay eggs in the back of the leaf damage, spray medicine should pay special attention.
Reasonable spraying to prevent poisoning
Pharmaceuticals and pesticides should be used to prevent pesticides from corroding the skin. The use of volatile pesticides must pay attention to the use of masks. At the same time, it is prohibited to spray pesticides at high temperatures during the summer noon. Summer spraying should be performed before 9 am or after 4 pm to avoid injury. It should be remembered that the continuous application time should not be too long.
Trolley Color Doppler Ultrasound Series
1. Imaging Modes:
· lB, B|B, 4B, B|M, M
· lColor Doppler (CFM)
· lPower Doppler (PDI)
· lDirectional Power Doppler (DPDI)
· lPulsed Wave Doppler (PWD)
· lB+PWD (Duplex)
· lB+CFM/PDI/DPDI+PWD (Triplex)
· lHigh Pulse Repetition Frequency (HPRF)
· ITissue Harmonic Imaging (THI)
2. Scanning Method: electronic linear, electronic convex, electronic micro-convex, scanning depth: 2-24cm
3. Color Doppler:
· lPRF variable: 0.5-9 kHz
· lwall filter settings: 3 steps (5%, %10%, 15% PRF)
· langle steering for linear transducers: ±10°
· lreal-time spatial filter: 4 values
· lCFM palette>10 maps
· lPDI palette>10 maps
· lB/Color priority control
· lcolor threshold control
· lCFM baseline control
· lDoppler frequency selection
· lcolor frame averaging
· lTransparent Color Mapping (TCM)
4. Pulsed Wave Doppler:
· lPRF variable: 1-10 kHz
· lwall filter settings: 16 steps (2.5%-20% PRF)
· langle steering for linear transducers: ±10°
· lreal-time trace line with automatic calculation of spectrum parameters
· lstereo sound: volume control
· lPWD palette>10 maps
· lDoppler frequency selection
5.Processing:
· lHigh Line Density scan mode for better resolution
· l8 sliders TGC Control
· ldynamic range>120 dB
· loverall gain control
· lM - mode sweep speed control
· lacoustic power control
· lvariable frame averaging
· lbrightness, contrast
· ladvanced gamma control
· lscan direction, rotation, up-down controls
· lnegative / positive control
· lecho enhancement control
· lnoise rejection function
· lspeckle reduction
6. Image and video: AVI, JPG, BMP, PNG, TIF, DCM (DICOM)
7. General Measurements and Calculations: Distance, Length, Area, Circumference, Volume, Angle, Stenosis %, A/B Ratio, Velocity, Pressure Gradient (PG), Acceleration, Resistivity Index (RI), Heart Rate, Velocity Time Integral (VTI), etc.
8. Measurements and Calculations Software Packages: Obstetrics, Gynecology, Abdominal, Urology, Endocrinology, Vascular, Cardiology, etc.
9. Expansion interfaces:
· lVGA, TV Interface
· lUSB2.0 Interface
· lRJ-45 Network interface
· lSupport DeskJet printer, LaserJet printer, video printer
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Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com