First, how to use corn seed fertilizer

1. Seed dressing: humic acid, biological fertilizer and micro-fertilizer can be used. The fertilizer is dissolved, sprayed on the corn seed, and sprayed while spraying, so that the fertilizer solution is evenly applied to the surface of the seed, and dried after sowing.

2, soaking seeds: dissolve the fertilizer into a certain concentration, soak the seeds in the solution for 12 hours, then dry and then sow.

3, strip application or point application: fertilizer is suitable for strip application or point application, the dosage is 2 to 5 kg, but the fertilizer must be separated from the seed, deep fertilization is better, the depth is 10 to 15 cm, urea, ammonium bicarbonate Ammonium chloride and potassium chloride should not be used as seed fertilizer.

Second, the benefits of applying corn seed fertilizer

The application of corn seed fertilizer mainly meets the needs of nutrients in the early stage of corn growth, and is mainly used in plots where the amount of base fertilizer is insufficient. The fertilizer is mainly composed of available nitrogen and phosphorus fertilizers. Spring maize in alpine region is more prone to phosphorus deficiency due to low spring temperature and slow release of available phosphorus. If high-quality decomposed organic fertilizer and phosphate fertilizer are used as seed fertilizer, the effect is better. There is no field for applying zinc fertilizer in the base fertilizer. It can be mixed with zinc fertilizer and mixed with 6-8 g of zinc sulfate per kg of seeds. When the fertilizer is used as a seed fertilizer, the dosage should not be too large, so as not to affect the seed germination. Fertilizer should be applied to the side of the seed, 4-5 cm away from the seed.

Third, how to choose corn fertilizer

1. Select fertilization varieties. Potassium chloride, ammonium chloride and other chemical fertilizers contain chloride ions. When applied to soil, water-soluble chlorides will be produced, which will be detrimental to seed germination and seedling growth, even burning seedlings; ammonium nitrate, potassium nitrate, etc. Fertilizers contain nitrate ions, which are toxic to seed germination; ammonium bicarbonate is volatile and corrosive, easily irritating seeds and seedlings; urea produces a small amount of biuret, if the content exceeds 2%, it will produce seeds and seedlings. Toxic. These are not suitable for seed fertilizer, otherwise it is easy to burn buds, burn seedlings, and can apply nitrogen, phosphorus, potassium compound fertilizer or slow release fertilizer.

2, control fertilizer amount of corn seedlings need less fertilizer, in order to reduce waste, the application rate of seed fertilizer should not be too large, generally about 10 kg per acre, especially when sowing, it is necessary to strictly control the amount of fertilizer application.

3. When applying the seed fertilizer to isolate the seed fertilizer, in order to avoid the direct contact between the seed and the fertilizer, the germination and burning of the seedlings should be carried out. When the seed is planted, the seeds should be separated from the fertilizer by 7 to 10 cm; when artificially planted, the fertilization should be applied to the side. Deep application or deep application of the inter-species.

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