Scientific use of fertilizer to ensure the need: melons and vegetables are crops that require more fertilizer and faster fertilizer consumption, so it is necessary to apply sufficient fertilizer to ensure the supply, especially in the seedling stage, flowering stage, maturity stage and the first batch of fruit harvesting. Partial topdressing. A combination of nitrogen, phosphorus, potassium and trace elements ( boron, calcium, zinc, iron ) is applied. Irrigation and cooling, fertilization promotes long: in the hot season, according to the soil conditions and the production status of melons and vegetables, timely irrigation or sprinkler irrigation, in order to reduce soil temperature, temperature and leaf temperature, reduce the high temperature burning of the leaves; And dissolved fertilizers, which are beneficial for root absorption. Picking the heart at the right time and promoting early maturity: after harvesting the first loquat fruit, pepper, eggplant, tomato, etc., according to the density, timely remove the top and side hearts, eliminate the "top advantage" and promote the balanced growth of the plants, that is, when the line is closed Going to the top of the heart and the side of the heart, when you are not closed, you only pick the top of the heart and don’t beat it. Cucumbers, melons, watermelons, etc., when the melons grow to about 25 leaves, they can be topped and cut into the middle and upper branches and axillary buds, so that the nutrients are concentrated and transported to the young fruit, which promotes rapid expansion. Prevention and control of pests and diseases, strong growth: common diseases and insects of summer vegetables include anthrax, gray mold, ulcer disease and aphids, red spiders, tobacco budworms, cotton bollworms and so on. Because melons and vegetables are people's daily foods, they should be especially careful when using drugs. It is strictly forbidden to use pesticides with high toxicity and long-lasting effect to ensure the safety of humans and animals. No matter whether it is treated or treated, it can not be sprayed 10 to 15 days before harvest .    Source: Rural Newspaper
The Cross Flow Cooling Fan is mainly used for the cooling and increasing capacity of the dry type transformer and the cooling and cooling of the products such as electronic equipment, distribution cabinet, high and low, pressure switch cabinet and so on. The use of cross flow cooling fan can improve the output power 40-50% of dry-type transformers, thereby greatly improving the bearing capacity of dry-type transformers and prolonging the service life of dry-type transformers, which is the most economical and effective way adopted by domestic and foreign manufacturers. I produced the cross flow cooling fan air volume, low noise, further improve the pressure, reduce energy consumption, the shell is made of high quality Aluminum Alloy materials, compact structure, beautiful appearance, convenient installation, long service life, so as to cross flow cooling fan long time in a bad environment inferior smooth operation provides a reliable security.
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Cross Flow Cooling Fan Cross Flow Cooling Fan,12V Cross Flow Cooling Fan,24V Cross Flow Cooling Fan,Dc Cross Flow Cooling Fan Shenzhen Fu Sheng Electric Co., LTD. , http://www.fushengfan.com
1, the ambient temperature should be 75º C ≥ -40º C.
2. The industrial gases of the cooling fan are not allowed to have strong acids, strong bases and various solutions.
3, sand dust and other debris are not allowed to fall into the fan, so as to avoid the destruction of the fan and the fracture of the fan leaf.
Installation and maintenance of the cooling fan in this section:
1, before installation, should first check whether the damage, deformation, such as damage or deformation should be repaired and installed.
2, and then check the parts and screws are loose; between the blade and the cylinder whether a collision or shift, if encounter or shift should be adjusted before installation.
3. After the cooling fan is installed, the test machine should be carried out, and the fan should be used on line after the fan is running normally.
4. When the fan is reused for a long time, the wind turbine should be checked and tested without abnormal phenomenon, so it can be used online.
5. After the installation of the fan, the wiring should be sealed in order to prevent the connection leakage to cause the short circuit destroyed motor.
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