After entering the winter, the temperature plummeted, the daily sunshine time became shorter, and the warm-temperature vegetables planted in the greenhouse had been pulled. For the cold-tolerant leafy vegetables, it was necessary to seize the opportunity to do the management before harvest; the autumn and winter plants planted in the greenhouse Vegetables are in a period of vigorous growth, and it is necessary to strengthen management and do a good job in preventing cold and freezing. Pulling vegetables in autumn greenhouses and collecting warm crops such as tomatoes, cucumbers and peppers grown in greenhouses in autumn should be pulled in time, and the immature tomato fruits can be stored in the greenhouse for ripening; for cold-resistant cabbage, spinach, Lettuce and other crops should be kept warm and anti-freeze. At night, the straw can be covered with a 1-meter-high straw curtain around the greenhouse, and harvested in time for the best commodity period. The cold insulation of the solar greenhouse carefully analyzes the thermal insulation performance of the greenhouse, and measures the insulation and cold protection for the weak parts: the rear window and the exhaust fan port are sealed with foam boards, straw curtains, etc., the cotton curtain is installed at the entrance, and the greenhouse is installed at the entrance of the greenhouse. 5 meters long windshield, and timely put the cold ditch into the insulation materials such as straw and leaves. The front roof of the shed is placed on the ground with a 1 meter high agricultural film to protect the cold. For the back slope, the cover is covered with 2-3 layers of straw curtains or the old insulation is insulated. At the same time, the back wall should be ground or covered with old straw to increase Insulation, two layers of agricultural film or non-woven fabric are set at night in the shed. Greenhouse vegetable management For greenhouse plants such as tomatoes, cucumbers, eggplants, etc., to adjust the temperature, light, air humidity and other environmental conditions, especially to increase the light, the film should be scrubbed frequently, increase the light transmittance, and Timely ventilation and ventilation, strengthen pruning and snoring, assist pollination, flower thinning and fruit thinning, scientific topdressing, watering, timely control of pests and diseases, etc., to promote plant growth and health, more results, good results. Cold-resistant crops such as celery, rapeseed, and radish should be well managed to adjust the environment, cultivating loose soil, and topdressing and watering. After cleaning the pastures and ploughing the land, the warm vegetables are harvested, and the plants and roots in the ground are taken back early, and the harmless treatment such as high-temperature composting or ozone disinfection is concentrated. Plowing the land before freezing, in the plot at the upper vent, you can plant wintering root leeks or rapeseed to prevent the exposed soil from forming dust and avoid polluting the air. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone 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
The management of the open root leeks, wintering spinach, shallots, etc., should be watered and topdressed in time to promote the healthy growth of the plants, which is conducive to safe wintering. Watering should be most suitable when the time of “freezing and freezing†(ie, freezing at night and thinning during the day).
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.