Essentials of Cultivation of Pepper in Greenhouses in Winter
First, the temperature and humidity control: 1, 20-25 degrees, must maintain the temperature in the shed is not less than 10 degrees to meet the needs of vegetable growth and development. 2. Humidity: The humidity in the shed of pepper is 60-70%. Less than 50% will affect photosynthesis and nutrient absorption of pepper. More than 70% will cause lengthy or disease. Field management: 1. Temperature management: Do not ventilate within one week after planting, mainly for heat preservation, and the temperature at night should not be lower than 10 degrees. 2. Moisture management: Peppers are more drought tolerant to waterlogging. To achieve high yields, water management must be strengthened. Irrigation should be carried out during the flowering and fruiting period to keep the soil moist. 3. Topdressing: (1) Light application of seedling fertilizer: 1000 kg of human feces per acre or 5-6 kg of urea after planting and survival, combined with cultivating water. (2) Stable application of flower bud fertilizer and appropriate increase of phosphorus and potassium fertilizers. Apply 15-20 kg of urea per acre, 10 kg of calcium and 10 kg of potassium sulfate. (3) Heavy application of flower and fruit fertilizer: Combined with nitrogen, phosphorus, and potassium fertilizers, 2,000 kg of manure and urine, 15-20 kg of calcium, 15 kg of potassium sulfate, and 20-25 kg or 30 kg of compound fertilizer are applied per mu. 3. Pest control: Vegetables in greenhouses provide suitable environmental conditions for the overwintering of pests and diseases in winter, which will make vegetable pests and diseases increasingly serious. Therefore, pest control is the key to successful vegetable cultivation in greenhouses. 1. Pepper diseases mainly include virus disease, blight, anthracnose, powdery mildew, bacterial wilt, root rot, etc., and toxic alum, mancozeb, powder rust, agricultural streptomycin, root rot, pepper For spoilage and other prevention and control, spray medicine every 7-10 days, and even prevent it 2 or 3 times. 2. Insect pests mainly include aphids, cotton bollworms, tobacco worms, etc. The pesticides are controlled by spraying with imidacloprid, kung fu, pyrethrin, etc., once every 7-10 days, and continuous prevention 2-3 times. Disclaimer: Some articles on this website are transferred from the Internet. If third party legal rights are involved, please inform this website to deal with them. phone Camera Kits System With 4 Camera
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NVR has different product forms. Although its core function is the capture, storage, management and forwarding of network video streams, different companies have different designs to complete these functions and have their own characteristics. There are mainly three types of NVR products.
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The first is the PC server based NVR software product (Software Only), that is, the manufacturer provides the NVR software plus license mode, which can be installed on any standard PC or server that meets the requirements.
The second is the NVR overall solution of software and hardware integration provided by the manufacturer, that is, the manufacturer installs the NVR software on its customized PC server, which is the so-called Turnkey Solution product.
The third is embedded NVR products, namely embedded devices based on embedded hardware platforms and operating systems; In addition, there are storage management integrated devices developed by storage device manufacturers, which are not the mainstream NVR form.
In terms of stability, although the reliability of PC based NVR system is not as high as that of embedded NVR system, compared with PC based DVR system, the PC based NVR system has relatively simple functions, fewer failure links and better stability than PC based DVR system.
In terms of scalability, as the PC based NVR system is based on the general PC platform and the general operating system, its hardware interface is universal, open and standardized, which is easy to be compatible with other hardware, and software development is also relatively convenient. However, due to the high hardware integration, single interface, poor compatibility with other hardware, and weak incidental functions of embedded software, the secondary development of embedded NVR is relatively complicated.