The ideal method of application is to first apply organic fertilizer (such as human and animal waste, straw, animal residue, slaughterhouse, compost, manure, manure, etc.), and then mix the remaining fertilizers such as urea, superphosphate, and potassium chloride. use.
2. Avoid mixing with ammonium bicarbonate
After urea is applied to the soil, the ability to convert to ammonia is absorbed by the crop, and its conversion rate is much slower under alkaline conditions than under acidic conditions. The ammonium carbonate is alkaline after being applied to the soil, and the pH is 8.2-8.4. When mixed with ammonium bicarbonate and urea, the rate of conversion of urea into ammonia is greatly slowed down, which easily causes the loss of volatilization and the loss of volatilization. Therefore, urea and ammonium bicarbonate are not suitable for mixing or simultaneous application.
3. Avoid sparing at the surface
Urea is applied to the surface, and it is absorbed by the crop after 4-5 days of transformation process at room temperature. Most of the nitrogen is volatilized during the ammoniumification process, and the utilization rate is only about 30%, if it is high in alkaline soil and organic matter. The soil is applied and the loss of nitrogen will be more. Therefore, nitrogen cannot be applied on the surface.
4. Avoid watering immediately after applying urea
Urea is an amine nitrogen fertilizer, and its ability to be converted into ammonia nitrogen after application is absorbed and utilized by crops. In the process of transformation, due to different soil, water and temperature conditions, the time is long and short, usually it takes 2-10 days to complete. If the urea is applied immediately after application or the dry land is applied before heavy rain, the urea will be lost immediately.
The three-point wood drill is a variant of the twist drill, because the conventional twist drill is easy to deviate when drilling on a flat processing surface. When drilling metal, a pilot hole is usually drilled to locate the Drill Bit. But when doing woodworking, we can have a more convenient choice. The straight tip of the three-point woodworking drill is nailed into the wood like an awl to ensure that the drill will not slip.
Wood Working Bits are cutting tools used to remove material to create different kinds of holes in wood materials. In order to create holes drill bits are usually attached to a drill, which powers them to cut through the objects.
Wood working drill Machining accuracy is good, and drilling out of the hole cleanliness is good, small burr,
Wood Working Dril,Wood Drill,Cutting Tool,Metal Cutting
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