Fertilization of irrigated wheat
First, the formula is applied to the base fertilizer. For the condition of irrigating, the high yield and stable yield of wheat can be realized. The amount of base fertilizer is generally about 3,000 kg per mu, and the pure nitrogen (N) is 5-7 kg, the phosphorus pentoxide (P2O5) is 6-8 kg, and the potassium oxide is K2O) 4 to 6 kg.
According to the above-mentioned amount of fertilization, the chemical fertilizer applied as the base fertilizer in autumn can be selected from one of the following fertilization schemes:
Option 1: 11 to 15 kg of urea, 40 to 50 kg of superphosphate (including P2O516%), and 7 to 10 kg of potassium chloride.
Option 2: 30-40 kg of ammonium bicarbonate, 40-50 kg of superphosphate (including P2O516%), and 7-10 kg of potassium chloride.
Option 3: 40-50 kg of ternary compound fertilizer (15% for each of N, P2O5 and K2O).
Option 4: 13 to 17 kg of diammonium phosphate (or monoammonium phosphate), 10 kg of urea (or 30 kg of ammonium bicarbonate), and 7 to 10 kg of potassium chloride.
The principle of the selection scheme is: the lower limit of fertilization in the past, the fertilization amount is higher than the recommended fertilization amount, such as: the application of phosphorus fertilizer in a large amount in many years, the soil available phosphorus (P) is greater than 20 PPM, and the rich in the yellow pan area. Potassium soil, the lower limit of the amount of phosphorus and potassium can be taken, and vice versa; the upper limit of the amount of nitrogen fertilizer that can be taken from all the corn stalks is returned to the field.
For wheat fields lacking trace elements such as zinc and boron or long-term application, the base fertilizer can be used for 1 to 1.5 kg of zinc sulfate and 0.5 kg of borax. For wheat fields that are deficient in calcium, magnesium, and sulfur, or that do not use calcium phosphate for a long time, a fertilization scheme with superphosphate may be used.
Second, the general application of fertilizer. Fertilizer can quickly meet the nutrient requirements of seedlings and is very beneficial for the formation of strong seedlings. The seed and fertilizer should be applied separately during application to avoid burning. The main varieties suitable for seed fertilizer are: urea, diammonium phosphate. It is best to mix the two 1:1 when applied. The dosage is generally about 30% of the weight of the seed.
Third, clever application of topdressing. The wheat fields with strong growth, reasonable group and prosperous population, and large populations are generally not topdressed or watered during the rejuvenation period. The topdressing can be delayed until the wheat is raised to the jointing stage. When the wheat seedlings are weak and the group is too small, they can be properly topdressed in advance. For the first time in the greening period, the urea is applied for 5 to 7 kilograms. After the second jointing, the seedlings will grow 5 to 10 kilograms of urea. The wheat field with medium fertility and small population is generally combined with watering before the jointing stage or at the beginning of the jointing stage (1.5 to 2 cm from the ground during the first section of the base), depending on the growth of the seedlings, 15 to 20 kg of urea is applied. The wheat field with high level of soil fertility, excessive growth, and suitable or large population can be appropriately pushed back to the middle and late stages of jointing (the first section of the base is close to the fixed length). The general application of urea is 10-15 kg.
Fertilization of dryland wheat
On the basis of more than 2000 kg of organic fertilizer per mu, nitrogen, phosphorus and potassium fertilizers are combined to obtain high yield. The target yield is in the plot of more than 300 kg per mu. The total amount of chemical fertilizer applied is 10-12 kg of pure nitrogen, 8-10 kg of phosphorus (P2O5) and 5 kg of potassium (K2O). Among the above total fertilization amounts, all organic fertilizers, phosphate fertilizers, potassium fertilizers, and 70% to 80% of nitrogen fertilizers are applied as base fertilizers. In the second year of spring, the soil returned to the ditch to chase the remaining 20% ​​to 30% of the nitrogen fertilizer (or the wheat after the return to green).
According to the above-mentioned amount of fertilization, the chemical fertilizer applied as the base fertilizer in autumn can be selected from one of the following three fertilization schemes:
Option 1: 60 to 60 kg of urea (or 40 to 50 kg of ammonium bicarbonate), 50 to 60 kg of superphosphate, and 8 kg of potassium chloride.
Option 2: 50-70 kg of ternary compound fertilizer (15% for each of N, P2O5 and K2O).
Option 3: 18 to 22 kg of diammonium phosphate (or monoammonium phosphate), 8 to 13 kg of urea (or 22-35 kg of ammonium bicarbonate), and 8 kg of potassium chloride.
The principle of the selection scheme is: the dry land with a yield of less than 300 kg per mu. On the basis of more than 2000 kg of high-quality organic fertilizer per mu, the total amount of chemical fertilizer applied should be lower than the above-mentioned fertilization amount, and no potassium fertilizer can be applied. In the past, the amount of fertilization was higher than the recommended limit of fertilization, and the lower limit of fertilization of soil fertilization. On the contrary, the upper limit was selected.
For dryland wheat, the spring should be combined with rainfall and timely topdressing. If there is no rain, the urea can be dissolved in water and then drained. Generally, the amount of urea used is 5 to 7.5 kg.
Source: Shandong Science and Technology News
First, the formula is applied to the base fertilizer. For the condition of irrigating, the high yield and stable yield of wheat can be realized. The amount of base fertilizer is generally about 3,000 kg per mu, and the pure nitrogen (N) is 5-7 kg, the phosphorus pentoxide (P2O5) is 6-8 kg, and the potassium oxide is K2O) 4 to 6 kg.
According to the above-mentioned amount of fertilization, the chemical fertilizer applied as the base fertilizer in autumn can be selected from one of the following fertilization schemes:
Option 1: 11 to 15 kg of urea, 40 to 50 kg of superphosphate (including P2O516%), and 7 to 10 kg of potassium chloride.
Option 2: 30-40 kg of ammonium bicarbonate, 40-50 kg of superphosphate (including P2O516%), and 7-10 kg of potassium chloride.
Option 3: 40-50 kg of ternary compound fertilizer (15% for each of N, P2O5 and K2O).
Option 4: 13 to 17 kg of diammonium phosphate (or monoammonium phosphate), 10 kg of urea (or 30 kg of ammonium bicarbonate), and 7 to 10 kg of potassium chloride.
The principle of the selection scheme is: the lower limit of fertilization in the past, the fertilization amount is higher than the recommended fertilization amount, such as: the application of phosphorus fertilizer in a large amount in many years, the soil available phosphorus (P) is greater than 20 PPM, and the rich in the yellow pan area. Potassium soil, the lower limit of the amount of phosphorus and potassium can be taken, and vice versa; the upper limit of the amount of nitrogen fertilizer that can be taken from all the corn stalks is returned to the field.
For wheat fields lacking trace elements such as zinc and boron or long-term application, the base fertilizer can be used for 1 to 1.5 kg of zinc sulfate and 0.5 kg of borax. For wheat fields that are deficient in calcium, magnesium, and sulfur, or that do not use calcium phosphate for a long time, a fertilization scheme with superphosphate may be used.
Second, the general application of fertilizer. Fertilizer can quickly meet the nutrient requirements of seedlings and is very beneficial for the formation of strong seedlings. The seed and fertilizer should be applied separately during application to avoid burning. The main varieties suitable for seed fertilizer are: urea, diammonium phosphate. It is best to mix the two 1:1 when applied. The dosage is generally about 30% of the weight of the seed.
Third, clever application of topdressing. The wheat fields with strong growth, reasonable group and prosperous population, and large populations are generally not topdressed or watered during the rejuvenation period. The topdressing can be delayed until the wheat is raised to the jointing stage. When the wheat seedlings are weak and the group is too small, they can be properly topdressed in advance. For the first time in the greening period, the urea is applied for 5 to 7 kilograms. After the second jointing, the seedlings will grow 5 to 10 kilograms of urea. The wheat field with medium fertility and small population is generally combined with watering before the jointing stage or at the beginning of the jointing stage (1.5 to 2 cm from the ground during the first section of the base), depending on the growth of the seedlings, 15 to 20 kg of urea is applied. The wheat field with high level of soil fertility, excessive growth, and suitable or large population can be appropriately pushed back to the middle and late stages of jointing (the first section of the base is close to the fixed length). The general application of urea is 10-15 kg.
Fertilization of dryland wheat
On the basis of more than 2000 kg of organic fertilizer per mu, nitrogen, phosphorus and potassium fertilizers are combined to obtain high yield. The target yield is in the plot of more than 300 kg per mu. The total amount of chemical fertilizer applied is 10-12 kg of pure nitrogen, 8-10 kg of phosphorus (P2O5) and 5 kg of potassium (K2O). Among the above total fertilization amounts, all organic fertilizers, phosphate fertilizers, potassium fertilizers, and 70% to 80% of nitrogen fertilizers are applied as base fertilizers. In the second year of spring, the soil returned to the ditch to chase the remaining 20% ​​to 30% of the nitrogen fertilizer (or the wheat after the return to green).
According to the above-mentioned amount of fertilization, the chemical fertilizer applied as the base fertilizer in autumn can be selected from one of the following three fertilization schemes:
Option 1: 60 to 60 kg of urea (or 40 to 50 kg of ammonium bicarbonate), 50 to 60 kg of superphosphate, and 8 kg of potassium chloride.
Option 2: 50-70 kg of ternary compound fertilizer (15% for each of N, P2O5 and K2O).
Option 3: 18 to 22 kg of diammonium phosphate (or monoammonium phosphate), 8 to 13 kg of urea (or 22-35 kg of ammonium bicarbonate), and 8 kg of potassium chloride.
The principle of the selection scheme is: the dry land with a yield of less than 300 kg per mu. On the basis of more than 2000 kg of high-quality organic fertilizer per mu, the total amount of chemical fertilizer applied should be lower than the above-mentioned fertilization amount, and no potassium fertilizer can be applied. In the past, the amount of fertilization was higher than the recommended limit of fertilization, and the lower limit of fertilization of soil fertilization. On the contrary, the upper limit was selected.
For dryland wheat, the spring should be combined with rainfall and timely topdressing. If there is no rain, the urea can be dissolved in water and then drained. Generally, the amount of urea used is 5 to 7.5 kg.
Source: Shandong Science and Technology News
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