Years of agricultural production practice shows that the majority of farmers in the fertilization of crops, especially favored nitrogen fertilizer, especially now that many young men and women in rural areas go out to work, the elderly and women who stay at home prefer to apply nitrogen fertilizer. Because of the application of nitrogen fertilizer, when the temperature is suitable and the sensation is good, the nutrient conversion is fast, the crop is absorbed quickly, and the visual effect is obvious.
However, in the process of applying nitrogen fertilizer, people often make some mistakes due to improper operation techniques, causing undue losses to agricultural production. For example, there is a cotton seed field. Cotton seeds that used to have large cotton fields were all mixed with urea. All of them were rotted, and they had to be replayed, which was a waste of cotton and delayed the season. I don't know if the biuret contained in urea is toxic to seeds, young shoots and young roots in the environment of high ammonia and strong alkali. For example, when some people have less land, when applying fertilizer to the dry crops, a large area of ​​bicarbonate is applied to reduce the fertilizer efficiency by 30%-50%, because ammonium bicarbonate is easy to volatilize in the air and easy to follow the rain. Loss, especially when the temperature exceeds 30 ° C, ammonia released by ammonium bicarbonate will reduce the germination rate of the seed. In the application of ammonium chloride, there are some poor drainage and long-term application of chlorine and nitrogen fertilizers in arid areas, which increases the accumulation of calcium chloride in the soil, increases the concentration of soil solution, and causes soil compaction, which is very unfavorable for crop growth. There are also some crops with high starch and sugar content, such as sugar cane, watermelon, sweet potato, potato, sugar beet, etc. After the application of ammonium chloride, chloride ions will promote the hydrolysis of carbohydrates, reduce the content of starch and sugar, and reduce the quality of products. . In addition, many farmers have applied excessive amounts of nitrogen fertilizers, which not only cause crops to grow, but also cause crops to sag, and also cause crops in the field to shade and induce pests and diseases. At the same time, nitrogen and phosphorus, potassium and other elements antagonize and make crops Growth and development have disorders of deficiency, affecting yield and quality.
In summary, there are different lessons in the application of nitrogen fertilizers. In order to increase the utilization rate of nitrogen fertilizer, the following points must be noted when applying nitrogen fertilizer to crops:
(1) Change the application as a deep application
Regardless of the type of nitrogen fertilizer, when it is used as a base fertilizer, it should be buried in a soil layer about 10 cm deep. When topdressing is done, it should be ditched or snored at a soil 8-10 cm from the crop. If the labor is sufficient, it can also be diluted after the water is applied according to the concentration requirements.
(2) Changing the seed dressing to fertilize the compartment
Urea, ammonium bicarbonate, ammonium chloride should not be directly applied with the seed. Where there is a habit of applying fertilizer, it must be applied to the soil first, and the seed can be mixed with the soil to produce a separation layer before seed can be planted.
(3) Change the commonly used chlorine and nitrogen fertilizers for neutral fertilization
That is, where there is a habit of applying ammonium chloride for several years, it is necessary to pay attention to the acidity of lime in the soil. At the same time, do not apply ammonium chloride when planting chlorine-free crops.
(4) Change the application of nitrogen fertilizer to balanced fertilization
According to the needs of different crops, appropriate amount of nitrogen fertilizer should be applied. It is advisable to mix and apply organic fertilizers with a certain proportion of phosphorus, potassium and trace elements in order to better receive the effect of nitrogen fertilizer.
However, in the process of applying nitrogen fertilizer, people often make some mistakes due to improper operation techniques, causing undue losses to agricultural production. For example, there is a cotton seed field. Cotton seeds that used to have large cotton fields were all mixed with urea. All of them were rotted, and they had to be replayed, which was a waste of cotton and delayed the season. I don't know if the biuret contained in urea is toxic to seeds, young shoots and young roots in the environment of high ammonia and strong alkali. For example, when some people have less land, when applying fertilizer to the dry crops, a large area of ​​bicarbonate is applied to reduce the fertilizer efficiency by 30%-50%, because ammonium bicarbonate is easy to volatilize in the air and easy to follow the rain. Loss, especially when the temperature exceeds 30 ° C, ammonia released by ammonium bicarbonate will reduce the germination rate of the seed. In the application of ammonium chloride, there are some poor drainage and long-term application of chlorine and nitrogen fertilizers in arid areas, which increases the accumulation of calcium chloride in the soil, increases the concentration of soil solution, and causes soil compaction, which is very unfavorable for crop growth. There are also some crops with high starch and sugar content, such as sugar cane, watermelon, sweet potato, potato, sugar beet, etc. After the application of ammonium chloride, chloride ions will promote the hydrolysis of carbohydrates, reduce the content of starch and sugar, and reduce the quality of products. . In addition, many farmers have applied excessive amounts of nitrogen fertilizers, which not only cause crops to grow, but also cause crops to sag, and also cause crops in the field to shade and induce pests and diseases. At the same time, nitrogen and phosphorus, potassium and other elements antagonize and make crops Growth and development have disorders of deficiency, affecting yield and quality.
In summary, there are different lessons in the application of nitrogen fertilizers. In order to increase the utilization rate of nitrogen fertilizer, the following points must be noted when applying nitrogen fertilizer to crops:
(1) Change the application as a deep application
Regardless of the type of nitrogen fertilizer, when it is used as a base fertilizer, it should be buried in a soil layer about 10 cm deep. When topdressing is done, it should be ditched or snored at a soil 8-10 cm from the crop. If the labor is sufficient, it can also be diluted after the water is applied according to the concentration requirements.
(2) Changing the seed dressing to fertilize the compartment
Urea, ammonium bicarbonate, ammonium chloride should not be directly applied with the seed. Where there is a habit of applying fertilizer, it must be applied to the soil first, and the seed can be mixed with the soil to produce a separation layer before seed can be planted.
(3) Change the commonly used chlorine and nitrogen fertilizers for neutral fertilization
That is, where there is a habit of applying ammonium chloride for several years, it is necessary to pay attention to the acidity of lime in the soil. At the same time, do not apply ammonium chloride when planting chlorine-free crops.
(4) Change the application of nitrogen fertilizer to balanced fertilization
According to the needs of different crops, appropriate amount of nitrogen fertilizer should be applied. It is advisable to mix and apply organic fertilizers with a certain proportion of phosphorus, potassium and trace elements in order to better receive the effect of nitrogen fertilizer.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
End Mill For Graphite Machining
End Mill For Graphite Machining,Carbide End Mills, Sdc Coating Mill,Roughing Milling Cutter
JIANGYIN GOLD STAR INDUSTRY CO.,LTD , https://www.goldstarmilling.com