Planting management technology of greenhouse squash
1. Fostering seedlings
Choose early maturing, high quality, low temperature and low light varieties, such as Jingjing No. 3. Early spring cultivation in greenhouses is generally sown from mid-November to early December. The facility is a greenhouse with a mulch and a mulch. The trays are lightly seeded and seeded, and the electric heating line is buried. Soaking seeds and germination before sowing, 350-400 grams of seed per acre. 50 trays, 50 to 60 kg of seedling substrate. 50% of the seedlings were removed from the mulch, and the whole seedlings were ventilated and damp, and the 2 leaves and 1 heart stage were appropriately cooled. Seedling age 3 to 4 leaves, seedling height 8 to 10 cm, 30 to 40 days transplanting, 5 to 7 days before transplanting to refine seedlings. Before planting, deep ploughing and hoeing were done, and the base fertilizer was applied. The planting was carried out in early February of the next year. The plant spacing was 40-45 cm, and the row spacing was 60-80 cm, one per hole. After planting, pour enough water to seal the wells, and seal the shed to increase the temperature.
2. Daejeon management
5 to 7 days after planting, the shed is not ventilated, and the living room is timely ventilated, damp and cool. Pay attention to the cold weather during the winter. In the middle of April, the shed in the greenhouse was removed. The outside temperature exceeds 18 ° C, and the apex of the greenhouse is removed to remove the skirt. Fertilizer management should be applied early, diligently applied, rooted melons and flowers, combined with watering, acre of human animal manure 500 kg plus 45% potassium sulphate compound fertilizer 10 kg, after each harvest 1 time top dressing 1 time. Do a good job of artificial pollination or hormone treatment during the flowering period. During the harvesting period, the old leaves, diseased leaves and excess male flowers are removed in time to reduce nutrient consumption and improve ventilation and light transmission conditions.
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Does the solar PTZ Camera System Kits work well
In fact, there are no network and no electricity cameras, but they have certain limitations. The working time of a camera with batteries or external solar panels is limited.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;
(3) Solar energy resources in various regions are not available, so photovoltaic power generation is highly regional.
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