1. Adding organic fertilizer, especially the application of coarse fiber with more fiber, providing comprehensive nutrition for vegetable growth, enhancing the buffering capacity of soil nutrients, preventing salt accumulation and delaying soil salinization.
2. After the vegetables are harvested, the soil is deeply ploughed, and the topsoil rich in salt is turned into the lower layer, and the lower layer of soil with less salt is turned to the upper layer to reduce salt damage.
3. Use the gap to remove the film, and let the surface layer of the soil leaching to the deep layer by sun or rain or flooding.
4. Vigorously promote formula fertilization. According to soil nutrient content, vegetable yield level and fertilizer requirement, rational application of nitrogen, phosphorus, potassium and trace element fertilizer can not only balance soil nutrient balance, but also slow soil salinization and acidification.
5. Deep application of base fertilizer, limited fertilizer. The base fertilizer should be applied to the topsoil by ploughing, so as not to increase the salt content. When the fertilizer is applied, it should try to “eat less mealsâ€.
6. Strongly advocate root dressing. For top dressing, it does not increase soil salinization and acidification, but also provides nutrients for vegetable growth.
Forging is a manufacturing process that involves shaping metal using localised compressive forces. It is one of the oldest known metalworking processes, traditionally performed by a blacksmith with a hammer and anvil. Nowadays, this technique is carried out using powered equipment such as hydraulic presses, hammer mills, or forge presses, which exert much higher forces and are capable of producing more complex shapes and finer details.
Its process can be categorised into three main types:
1. Cold Forging
Performed at or near room temperature, which increases the strength of the metal through work hardening. It is typically used for smaller parts and can produce a high surface finish and excellent dimensional control.
2. Warm Forging
Carried out at temperatures between room temperature and about half the metal`s melting point. This process offers a good balance between the ease of shaping and the final properties of the metal, making it suitable for parts requiring moderate strength and precision.
3. Hot Forging
Performed at temperatures above the metal`s recrystallisation temperature. This method allows for the shaping of large and complex parts, as the high temperatures increase metal ductility and reduce resistance to deformation. Hot forging is commonly used for steel, aluminium, and brass.
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