In the later period of the results of pepper, if the improper management of fertilizer and water, or the occurrence of diseases and pests, or other adverse factors, often lead to premature aging of pepper, premature aging symptoms of plant atrophy, yellow leaves, fruit maturity, low yield, serious The premature death of plants has a great impact on yield. It is very important to promote the high and stable yield of peppers and prevent the premature decline of the peppers. Therefore, the following countermeasures should be taken. First, timely supply of fertilizer, prevention and treatment of lack of fertilizer. Timely topdressing peppers can provide sufficient nutrients for growth and development of plants, which is the key to prevent plant aging. For this reason, after the peppers begin to be harvested, they should supply fertilizer and water in time, and chase them once after each harvest. 1-2 times, every 10 to 20 days to chase a fertilizer, can be combined with irrigation of human fecal urine, but also topdressing nitrogen fertilizer and phosphate fertilizer, per acre DAP 10 kg, potassium sulfate 5 kg, urea 1 In kilograms, fertilize the three fertilizers in water before fertilizing and then pour them in the roots of the pepper pods. It is not appropriate to grind the kerfs to prevent damage to the roots. Second, scientifically control pests and diseases. The most common diseases of pepper are anthracnose and epidemic diseases, which can be sprayed with 500 doses of dexamethasone, spraying once every 10 days to prevent anthrax, and using 75% of chlorothalonil WP 800 times to prevent and treat diseases. At the same time, it is necessary to focus on prevention and control of viral diseases, epidemics, and root rot during the regenerative cultivation of peppers. Generally, 500 times liquid anti-virus maggots can be used to prevent and control diseases; 50% carbendazim 500 times solution or 50% thiophanate-methyl 500 times solution Irrigation to prevent root rot or blight; use 500% anthrax or 77% to kill anthrax to prevent and control disease; for viral diseases, plant diseases can be used Ling, bactericide and other agents spray prevention; aphid 50% can avoid fogging 2000 times spray control. Third, timely harvest. Advocating early harvesting of fruits and early harvesting can reduce the nutrient consumption of plants and prevent premature plant aging; if it is harvested lately, it will consume nutrients and cause premature aging and dead plants. Except for red pepper dried varieties or reserved seeds, the harvest time is appropriate when the green fruits have not yet turned red. For chili peppers that eat green peppers, the interval between two pepper harvests is usually 7 to 10 days. Intervals often cause premature aging. Harvesting red peppers is appropriate when the fruits start to turn red. Delayed harvesting will increase nutrient consumption and lead to plant senescence. Fourth, pay attention to prevent leggy. After the first pepper is harvested, the plants are already in the overshoot stage and the new shoots at the bottom are to be reduced to reduce the consumption of nutrients. Fifth, timely pruning. Two peppers are prepared to be harvested. After the second bud, the young shoots, invalid shoots, and buds are removed in time to reduce nutrient consumption and promote fruit enlargement. After the peppers are set up normally, the axillary buds below the peppers must be removed. For the weakly growing plants, the peppers and peppers should be removed to concentrate the nutrient supply for other fruit growth and reduce the phenomenon of falling fruit and fruit. In the case of unsuitable conditions, in order to prevent excessive pepper drop, use 40 ~ 50ppm tomato spirit solution spray. Six, timely removal of old leaves. The old leaves, dead leaves and diseased leaves should be promptly removed to facilitate ventilation and light transmission in the field. This will not only reduce the nutrient consumption of plants, but also effectively control the occurrence and spread of diseases, promote the robust growth of plants, prevent premature plant failure, and ensure that the high yield. Seven, irrigation cooling. In the hot season, appropriate watering according to the weather and soil moisture conditions, mainly pouring thin water, reduce soil temperature, and to small water, this can prevent injury, pay attention to prevent flooding irrigation, at the same time, after the heavy rain, to do Good drainage work, timely drain water to ensure the normal growth of plants. Instrument Ultrasound Therapy Device,Ecg Machine,Ecg Machine 12 Channel,Electrocardiograph Machine 6 Channel,Three Channel Ecg Machine Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com
Imaging mode: 1-2-3D, real time display
Locating system: Three dimensional motor platform
Scanning mode: 2Dgalvanometric scanning system
Lateral resolution: 3.8 um
Axial resolution: 4I um
Image depth: 0-2 mm
Speed: 1-50 frame/s
Clinical PW A detection
Port wine stains ( PWS ) is always a birthmark . It is caused by a vascular anomaly. PA imaging could provide real-time information about the thickness of the skin and diameter. depth, distribution of blood vessel , which provide significant help with clinical diagnosis and treatment.
PAI VS. OCT
Image depth : PA 2 mm
OCT 0.4 mm
Functional identification : With optical fingerprint characteristics ,P A could specificity imaging blood vessels , eliminates the interference of hair follicle, sebaceous glands.
The clinical testing has been carried out in 301 and guangzhou military general hospital , testing and statistic all kinds of PWS lesions in patients with vasculal parameters , in order to establish the classification and quantitative treatment of PWS.