Solar Ground Mounting System includes Ground Screw Mounting System and Concrete Base Mounting System. Ground Screw mounting system is consist of ground screw and U shape steel and the main material is Q235, surface treatment is hot-dipped galvanized and the useful life is 25 years. Concrete base mounting system is applicable for the array system on the open fields and different foundation solution , it will have different install accessories, such as concrete with bolt and ground screw, the material of this system is hot dipped galvanized steel and anodized aluminum alloy with great anti-corrosive suitable for outdoor using.
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Ammonium sulfate avoids long-term use of ammonium sulfate is a physiological acid fertilizer. Long-term use in a piece of land will increase soil acidity and destroy soil aggregate structure. In alkaline soil, ammonium ions in ammonium sulfate are absorbed, while acid ions remain in In the soil, it acts with calcium to harden the soil compaction.
After the application of chlorinated fertilizer to the saline-alkali ammonium chloride, potassium chloride and other chemical fertilizers applied to the soil, the chloride ions remain in the soil. Long-term application will increase the accumulation of chloride ions in the soil, leading to acidification of the soil and use on saline-alkali soil. Increase the salt damage.
Source: Agricultural Science and Technology News 
There are taboos for the application of three fertilizers
Ammonium bicarbonate should not be applied at a depth of more than 6 cm, and the soil should be covered immediately after application. In addition, it should not be used in the greenhouse, because ammonium bicarbonate is also called "gas fertilizer", which is easily decomposed into ammonia gas and volatilized in the greenhouse.
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