Nitrogen fertilizer before the release Synergist certain proportion with nitrogen (100 kg of ammonium bicarbonate and Slow synergist 3--4 kg, 100 kg urea adduct 2.0 - 2.5 kg) Hunban uniform, disposable together with P and K The bottom. Precautions for the use of nitrogen fertilizer long-acting synergist 1. If the mixture is used for a long time after mixing, the fertilizer will become sticky. Although it does not affect the fertilizer efficiency, it will cause inconvenience to fertilization. 2 , the seed fertilizer isolation fertilizer once input, the amount of fertilizer is large, the salt ion concentration is high, easy to cause burning seedlings. Seeding and fertilizer isolation must be done when fertilizing. Usually seed from the fertilizer side 5--6 cm is appropriate. 3 , depending on the soil application leakage and leakage of fertilizer plots generally do not promote the use of chemical fertilizers. Introduce two kinds of fertilization formulas 1 , three-element compound fertilizer with 15% nitrogen, phosphorus and potassium nutrient content and total nutrient content ≥ 45% mixed with long-acting synergist. That is, each 667 square meters with 45% compound fertilizer 20 kg + urea 15 - 17.5 kg + long-acting synergist 1 kg, mixed once after the bottom application. The formulation of long-acting than fertilizer plant fertilizer per 667 square meters to reduce the cost 8--13 yuan. 2 , directly with urea, granular phosphate fertilizer, potassium chloride and long-acting synergists mixed. I.e. fertilizer particles per 667 square meters (12%) 30 - 40 kg of urea + 15--20 kilograms + + 5 kg of potassium chloride release Synergist 1 kg. Mix well before planting, once applied. The application of the formula than the long-term fertilizer plant fertilizer per 667 square meters to reduce the cost of 10--15 million.
Long-acting nitrogen fertilizer application points
Long-acting nitrogen fertilizer is suitable for all kinds of crops and various soil conditions. Promote the use of slow release nitrogen currently two main varieties: effective length urea and ammonium bicarbonate, which is a method of administration with urea, ammonium bicarbonate substantially the same. The specific application points are as follows:
　　 1. The nitrogen release of long-acting nitrogen fertilizer is relatively slow, and the peak release period is about 5 days later than urea , so it should be earlier than the regular application period of urea. Generally, early spring is 5-6 days ahead of schedule , and summer is 3-4 days ahead of time .
　　 2. Long-acting nitrogen fertilizer has strong nitrogen retention capacity in soil and high utilization rate. Therefore, its dosage is slightly less than that of normal nitrogen fertilizer. It is usually 10%-15% less than the constant .
　　 3. Due to different soil quality, the absorption and preservation ability of long-acting nitrogen fertilizer in the soil also has obvious differences. The absorption and preservation ability of clay is strong, and the amount of clay can be more; the sandy soil should be applied in small amounts multiple times.
　　 4. Scientifically apply long-acting nitrogen fertilizer according to different nitrogen absorption characteristics of crops.   Nitrogen fertilizer before the release Synergist certain proportion with nitrogen (100 kg of ammonium bicarbonate and Slow synergist 3--4 kg, 100 kg urea adduct 2.0 - 2.5 kg) Hunban uniform, disposable together with P and K The bottom. Precautions for the use of nitrogen fertilizer long-acting synergist 1. If the mixture is used for a long time after mixing, the fertilizer will become sticky. Although it does not affect the fertilizer efficiency, it will cause inconvenience to fertilization. 2 , the seed fertilizer isolation fertilizer once input, the amount of fertilizer is large, the salt ion concentration is high, easy to cause burning seedlings. Seeding and fertilizer isolation must be done when fertilizing. Usually seed from the fertilizer side 5--6 cm is appropriate. 3 , depending on the soil application leakage and leakage of fertilizer plots generally do not promote the use of chemical fertilizers. Introduce two kinds of fertilization formulas 1 , three-element compound fertilizer with 15% nitrogen, phosphorus and potassium nutrient content and total nutrient content ≥ 45% mixed with long-acting synergist. That is, each 667 square meters with 45% compound fertilizer 20 kg + urea 15 - 17.5 kg + long-acting synergist 1 kg, mixed once after the bottom application. The formulation of long-acting than fertilizer plant fertilizer per 667 square meters to reduce the cost 8--13 yuan. 2 , directly with urea, granular phosphate fertilizer, potassium chloride and long-acting synergists mixed. I.e. fertilizer particles per 667 square meters (12%) 30 - 40 kg of urea + 15--20 kilograms + + 5 kg of potassium chloride release Synergist 1 kg. Mix well before planting, once applied. The application of the formula than the long-term fertilizer plant fertilizer per 667 square meters to reduce the cost of 10--15 million.
Long-acting nitrogen fertilizer application points
Long-acting nitrogen fertilizer is suitable for all kinds of crops and various soil conditions. Promote the use of slow release nitrogen currently two main varieties: effective length urea and ammonium bicarbonate, which is a method of administration with urea, ammonium bicarbonate substantially the same. The specific application points are as follows:
　　 1. The nitrogen release of long-acting nitrogen fertilizer is relatively slow, and the peak release period is about 5 days later than urea , so it should be earlier than the regular application period of urea. Generally, early spring is 5-6 days ahead of schedule , and summer is 3-4 days ahead of time .
　　 2. Long-acting nitrogen fertilizer has strong nitrogen retention capacity in soil and high utilization rate. Therefore, its dosage is slightly less than that of normal nitrogen fertilizer. It is usually 10%-15% less than the constant .
　　 3. Due to different soil quality, the absorption and preservation ability of long-acting nitrogen fertilizer in the soil also has obvious differences. The absorption and preservation ability of clay is strong, and the amount of clay can be more; the sandy soil should be applied in small amounts multiple times.
　　 4. Scientifically apply long-acting nitrogen fertilizer according to different nitrogen absorption characteristics of crops.Elevator Car,Safety Tips,Elevator Car Safety,Elevator Carriage
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