Which fertilizers are more suitable for seed fertilizer
The term "fertilizer" refers to a fertilizer applied to or mixed with seeds when planted or planted. Generally, quick-acting fertilizer or good-quality farmyard manure is used as seed fertilizer. Because the seed fertilizer is often in direct contact with the seed or close to the seed, the requirements for the type and amount of fertilizer are strict. Once the application is improper, it may cause burning and rotting, resulting in lack of seedling and ridge. Fertilizers that are too concentrated, too acidic, too alkaline or contain toxic substances, and fertilizers that produce high temperatures are not suitable for seed application. There are four types of fertilizers that can be used as seed fertilizers:
1. Ammonium sulfate ammonium sulfate (referred to as ammonium sulfate) is suitable for various crops and can be used as base fertilizer, seed fertilizer and top dressing. When making seed fertilizers and planting fertilizers, excessive contact between ammonium sulfate and seeds should be avoided. Seed dressing is a cost-effective fertilization method (2.5 kg per mu), but it is necessary to ensure that the seeds and ammonium sulfate are in a dry state, and they can not be placed for a long time with the mixing.
Second, superphosphate is commonly referred to as general calcium phosphate, referred to as calcium, suitable for a variety of soils, crops, mainly used as base fertilizer or seed fertilizer, seed fertilizer can reduce the soil's fixation of phosphorus, help seedlings to phosphorus Absorption of the prime. First crush the calcium into the sieve, it is best to mix with high-quality farmyard manure to avoid the phenomenon of burning of calcium and seed. Concentrated strips, the amount of fertilizer applied is 10-20 kg, scattered and applied, and the amount of fertilizer applied is 20-30 kg. In the case of a limited amount of phosphate fertilizer, it should first be considered as a seed fertilizer.
Third, heavy superphosphate calcium superphosphate (referred to as heavy calcium) to do seed fertilizer, the amount of fertilization of 2.5 to 5 kg is appropriate. Since heavy calcium does not contain calcium sulfate, the fertilization effect on sulfur-loving crops (such as potato and bean crops) is less than that of calcium. In addition, the effect of applying in alkaline soil is not as good as that of calcium.
4. Diammonium phosphate diammonium phosphate can be used as base fertilizer, seed fertilizer or top dressing, but it is better to use base fertilizer and seed fertilizer. When using it as seed fertilizer, the dosage should not be too much, 2.5~5 kg per acre. It is advisable to pay attention to isolation from seeds to prevent burning seedlings; when soaking seeds, 2% diammonium phosphate solution, ie 1 kg of diammonium phosphate, is dissolved in 50 kg of water, soaking 50 kg of corn seeds, time 24 In the hour, you can sow it after dipping.
1. Ammonium sulfate ammonium sulfate (referred to as ammonium sulfate) is suitable for various crops and can be used as base fertilizer, seed fertilizer and top dressing. When making seed fertilizers and planting fertilizers, excessive contact between ammonium sulfate and seeds should be avoided. Seed dressing is a cost-effective fertilization method (2.5 kg per mu), but it is necessary to ensure that the seeds and ammonium sulfate are in a dry state, and they can not be placed for a long time with the mixing.
Second, superphosphate is commonly referred to as general calcium phosphate, referred to as calcium, suitable for a variety of soils, crops, mainly used as base fertilizer or seed fertilizer, seed fertilizer can reduce the soil's fixation of phosphorus, help seedlings to phosphorus Absorption of the prime. First crush the calcium into the sieve, it is best to mix with high-quality farmyard manure to avoid the phenomenon of burning of calcium and seed. Concentrated strips, the amount of fertilizer applied is 10-20 kg, scattered and applied, and the amount of fertilizer applied is 20-30 kg. In the case of a limited amount of phosphate fertilizer, it should first be considered as a seed fertilizer.
Third, heavy superphosphate calcium superphosphate (referred to as heavy calcium) to do seed fertilizer, the amount of fertilization of 2.5 to 5 kg is appropriate. Since heavy calcium does not contain calcium sulfate, the fertilization effect on sulfur-loving crops (such as potato and bean crops) is less than that of calcium. In addition, the effect of applying in alkaline soil is not as good as that of calcium.
4. Diammonium phosphate diammonium phosphate can be used as base fertilizer, seed fertilizer or top dressing, but it is better to use base fertilizer and seed fertilizer. When using it as seed fertilizer, the dosage should not be too much, 2.5~5 kg per acre. It is advisable to pay attention to isolation from seeds to prevent burning seedlings; when soaking seeds, 2% diammonium phosphate solution, ie 1 kg of diammonium phosphate, is dissolved in 50 kg of water, soaking 50 kg of corn seeds, time 24 In the hour, you can sow it after dipping.
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