Corn is a crop that requires a lot of fertilizer and requires a lot of fertilizer. Once a corn lacks an element, it will show its corresponding characteristics. The main symptoms of phosphorus deficiency in maize: seedling growth is slow and dwarfed, root development is poor, leaves are not stretched, stems are weak, stems and leaves are dark green and purple, leaves are dry and dark brown, from leaf tip along leaf margin The sheath is dark green and purple. Purple is due to the inhibition of sugar metabolism in corn plants, accumulation of sugar in the leaves, promote the formation of anthocyanins, make the plants purple. Phosphorus deficiency from booting to flowering, sugar metabolism and protein synthesis are blocked, and ear differentiation is poorly developed. The top of the ear is contracted, even the empty ear, and the filament is delayed, which is prone to baldness, lack of grain and irregular grain, and curved ears. The main symptoms of nitrogen deficiency in maize, corn plants grow slowly, the leaves are narrow, the stems are slender, the leaf color turns yellowish green, and the lower leaves are prematurely aging. In the absence of nitrogen, the old leaves first express symptoms and then develop into the tender leaves of the plants. The appearance of this symptom can be used as an indicator of nitrogen deficiency, and appropriate application of nitrogen fertilizer according to soil fertility is an effective stimulation measure. The main symptom of zinc deficiency in maize: zinc deficiency has pale yellow stripes on both sides of the early midrib of the corn, while the midrib and edge of the leaves remain green. If zinc deficiency continues, the streaked part may be necrotic, forming a wide fading zone. The whole plant of the corn turns pale green, the growth is delayed, and it may die prematurely. Zinc can affect the synthesis of auxin in corn plants. Zinc can catalyze the photochemical reaction of chlorophyll, and zinc deficiency can cause chlorosis. Zinc is also an activator of some enzymes and has an important relationship with protein synthesis. The main symptoms of potassium deficiency in corn: Potassium fertilizer can promote the growth of thick-walled cells in the epidermis of corn stalks, forming a good mechanical structure, making the stalk tough and improving the resistance to lodging. Potassium fertilizer can reduce the protoplasmicity of cells, enhance the water retention capacity of cells, and improve drought resistance. Potassium deficiency in corn, the seedlings develop slowly, the leaves are light green and have green stripes. Potassium in the old leaves is transferred to the new tissue, and the tip and edge of the leaves are necrotic and dry and burning. But the midrib of the leaf remains green. If there is a serious lack of potassium. Plant growth is short, internode shortening, ear development is poor, the tip is particularly sharp, the bald top is severe, the starch content of the grain is reduced, and the 1000-grain weight is reduced. It hinders the transportation of nutrients to the roots, causing poor root development, premature aging, and susceptibility to stem rot or down. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Does the solar PTZ Camera System Kits work well
(3) Solar energy resources in various regions are not available, so photovoltaic power generation is highly regional.
we offered that you can trust. Welcome to do business with us.
PTZ Camera System Kits,PoE NVR,Day Night Motion NVR Sets,wireless camera to NVR,Reolink WiFi cameras Shenzhen Fuvision Electronics Co., Ltd. , https://www.szsolarcamera.com
Monitoring without network means that mobile phones and cameras can only be seen within a certain range of 5~10 meters.
Therefore, no network and no power is just a gimmick. We must pay attention to distinguish when buying.
Is the Solar Camera easy to use
Jiajie intelligent surveillance camera is very good
Advantages and disadvantages of solar monitoring
Probably.
Generally, offline display has the following two conditions.
One is that the installed 4G card has no traffic and cannot provide network connection for monitoring;
The other is that there is a problem with the signal receiving device, which makes it unable to connect to the network. Therefore, the user can access the APP connected to the monitor to check whether there is still traffic on the 4G card. If there is still traffic, there is a problem with the monitoring; If there is no traffic, the renewal fee can continue to be used.
Which is the best solar Outdoor Camera
It may be that the poor contact of the power plug causes power on, heating and power failure, or it may be that the camera's internal control motherboard fails, causing power on for several minutes and automatic power off protection.
The camera works continuously, and the internal chip may overheat, which also exists in many SLR cameras. Some cameras impose time limits on continuous shooting. Centralized power supply with high-power switching power supply
Disadvantages of camera solar power supply
The main advantages of solar photovoltaic power generation are:
(1) Simple structure, small and light volume;
(2) Easy to install, easy to transport, short construction period, and short time to obtain energy;
(3) It is easy to use and maintain, and can work normally in the temperature range of - 50 ℃~- 65 ℃;
(4) Safe, reliable, noiseless, pollution-free, and absolutely clean (pollution-free);
(5) The advantages of building roofs can be used without the restriction of resource distribution regions; For example, areas without electricity and areas with complex terrain;
(6) The rate of price reduction is fast, and the time for energy repayment may be shortened;
(7) It can be matched with the battery to form an independent power supply, or it can be connected to the grid for power generation.
(8) Local power generation and supply without fuel consumption and transmission lines
The main disadvantages of solar photovoltaic power generation are:
(1) Low solar energy density and large coverage area;
(2) Photovoltaic power generation is intermittent and random;