Avoid the use of corrosive fertilizers such as ammonium bicarbonate or ammonia, which are volatile and corrosive. They are easy to smear seeds and seedlings. Superphosphate contains free sulfuric acid and phosphoric acid, which can cause damage to seed germination and seedling growth. Generally, it is not suitable for seeding. fat. This type of fertilizer should be applied during tillage, or applied to the lower layer of the seeding ditch, not in direct contact with the seed, or mixed with soil and fertilizer.
Avoid using the toxic fertilizer urea. During the growth of the crop, a small amount of adipic acid is often formed. If the content of the adipic acid exceeds 20%, the seed and the seedling will be poisoned. In addition, urea molecules with high nitrogen content penetrate into the protein molecules of the seed, denature the protein, and poison the seed germination and radicle.
Avoid using fertilizers with harmful ions. Potassium amide, ammonium amide 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 and potassium nitrate. Fertilizers contain nitrate ions, which are toxic to seed germination.
Avoid strong alkaline fertilizers. Strong alkaline fertilizers include kiln ash potassium fertilizer and steel slag phosphate fertilizer. The kiln ash potassium fertilizer contains more calcium and has strong water absorption. After absorbing water, it releases a lot of heat, and it is easy to burn out seeds and radicles. When it is necessary to be used as a seed fertilizer, it must be thoroughly mixed with organic fertilizers higher than 10 times, and applied to the lower layer of the seeding ditch (cavity). Do not directly contact the seeds, and pay attention to covering the soil immediately after sowing to prevent damage.
Avoid using unfertilized human and animal manure. Generally, the farmer's manure such as manure and manure can be used as seed fertilizer, and it is applied to the seed near the seeding. The effect is very good. However, if the unfertilized manure is used as a seed fertilizer, the fertilizer will release a lot of heat energy during the fermentation process, which not only causes burnt roots, but also releases ammonia gas and burns the seedlings. Farm manure and other farmyard manures must be fermented at high temperature and fully fermented before they can be used for seed fertilizer.
Avoid using the toxic fertilizer urea. During the growth of the crop, a small amount of adipic acid is often formed. If the content of the adipic acid exceeds 20%, the seed and the seedling will be poisoned. In addition, urea molecules with high nitrogen content penetrate into the protein molecules of the seed, denature the protein, and poison the seed germination and radicle.
Avoid using fertilizers with harmful ions. Potassium amide, ammonium amide 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 and potassium nitrate. Fertilizers contain nitrate ions, which are toxic to seed germination.
Avoid strong alkaline fertilizers. Strong alkaline fertilizers include kiln ash potassium fertilizer and steel slag phosphate fertilizer. The kiln ash potassium fertilizer contains more calcium and has strong water absorption. After absorbing water, it releases a lot of heat, and it is easy to burn out seeds and radicles. When it is necessary to be used as a seed fertilizer, it must be thoroughly mixed with organic fertilizers higher than 10 times, and applied to the lower layer of the seeding ditch (cavity). Do not directly contact the seeds, and pay attention to covering the soil immediately after sowing to prevent damage.
Avoid using unfertilized human and animal manure. Generally, the farmer's manure such as manure and manure can be used as seed fertilizer, and it is applied to the seed near the seeding. The effect is very good. However, if the unfertilized manure is used as a seed fertilizer, the fertilizer will release a lot of heat energy during the fermentation process, which not only causes burnt roots, but also releases ammonia gas and burns the seedlings. Farm manure and other farmyard manures must be fermented at high temperature and fully fermented before they can be used for seed fertilizer.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Measuring Tape,Long Tape Measure,Magnetic Tape Measure,Retractable Tape Measure
HENAN SHIJI HUALIAN TOOLS AND MEASURE CO.,LTD , https://www.hnsjhl.com