With the improvement of people’s living standards, as a high-grade fruit, big cherries are increasingly entering ordinary families. In recent years, cherry trees have been introduced in many places in our province. However, many people report that the dead trees are serious after they are planted. Is it true that "cherry trees are difficult to plant?"

In fact, the problem is still not mastered the cherry tree cultivation techniques and technical key, in particular, ignore the cherry tree winter management. Large cherries are species that are afraid of drought, fear of warts, fear of freezing, fear of wind, fear of salt and alkali, and fear of clay. They must choose fertile, loose, good water retention, no water accumulation in rainy season, low groundwater level, air circulation, and topography. High, leeward, easy-to-transport, neutral or slightly acidic sandy loam garden. Wind patches, but also windbreaks on the windward side of the orchard. Winter management is very important and needs to be done in the following five areas:

First, trim woodland

Big cherry orchards must be repaired with irrigation and drainage systems. The irrigation period should be determined according to soil moisture conditions, usually including pre-flower water, hard nuclear water, post-harvest water, and frozen water for 4 times. Pay attention to drainage during the rainy season. For 48 hours of continuous water accumulation, the roots of the cherry tree will lose their absorption capacity due to lack of oxygen and cause plant death. Therefore, it is imperative that the forest land be well drained and there will be no accumulation of water during the rainy season. After heavy rain and irrigation, loose soil in time to maintain the permeability of the soil. Particular attention should be paid to planting cherry trees on flat land. The ground between the rows should be adjusted slightly below the tree plate to create a bed with a height that can avoid water accumulation in the rainy season and watering in the dry weather, that is, energy irrigation.

Second, winter cut insect

Based on the summer pruning, the winter shear is mainly based on thinning. The first is to cut away the dense branches, cross branches, and pests and branches from the base, retract the bare shoots, promote new branches, and appropriately short-cut the middle and long-lasting branches to play the role of sparse flowering.

The most serious pest of big cherries is the poisonous moth, commonly known as the octagonal tiger, the octagon, and the hot itch. A large number of larvae eat leaves, harm the young shoots, resulting in dead branches and flow plastic, as the crickets wintering over the trees, shaped like quail eggs. During the winter cut, the insect tip must be cut off and burned or buried deeply. The branches that need to be kept can be removed by hand.

Third, clean garden sterilization

The most serious and common disease of cherry is gum disease, which can cause dead trees. For this reason, the whole garden should be cleaned and sterilized in the winter. The litter was cleaned up, and the whole garden was sprayed with a bactericide. The 85% trichloroisocyanuric acid (Bonin) of Tianjin Baisheng Chemical Co., Ltd. was used. The effect was very good. For an ordinary orchard, all branches and grounds of the tree can be sprayed with 1000-times of Bonin; in orchards with severe convection, Bonin 300-times can be used to clear the garden, and after scraping the glue in spring, Bonin 30 is used. Hydrate wet spots. Trichloroisocyanuric acid is a highly effective, low-toxic, highly permeable, short-lived drug with specific effects on fruit tree drips and rot.

Fourth, prevent freezing injury

After sterilizing in the clear garden, the 2-3 days interval, and then spray the anti-freeze liquid on the cherry tree. Can also use their own whitening agent to paint the trunk white, which can also play a role in insecticidal, bactericidal, antifreeze. The ratio of whitening agent was 1 part of lime sulfur stock solution, 1 part of salt, 6 parts of quick lime and 20 parts of water. The quick lime is added to the water and the ash is filtered off. The lime sulfur and salt are then added.

Fifth, fertilize and water

Cherry trees should be dominated by autumn basal fertilisers. If there is not enough time before the autumn, they must be supplemented before pouring frozen water. Each tree should be fed with 1-1.5 kg of bio-organic fertilizer and 0.5 kg of NPK. Compound fertilizer can be. Pour a frozen water after fertilization to prevent winter drought.

In suitable soil and climatic conditions, the first cause of dead cherry trees is drought, the second is flood, the third is turbid, the fourth is insect and the fifth is freezing. Solve these five problems, cherry delicious, the tree will not be difficult to plant.

Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone

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

Trolley Color Doppler Ultrasound system,Color Doppler Ultrasound system,Color Doppler Ultrasound Trolley

Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com