"A crop of flowers, all rely on fat to become a home," this farmer to a large extent shows that the relationship between high yield of crops and fertilization is very close. In the past, traditional agriculture was mainly based on the application of organic fertilizers produced by farmers. Later, with the promotion and application of new agricultural technologies, most farmers switched to farmyard manure and fertilizers, especially in areas where the main labor force in rural areas was transferred. In the fertilization of crops, more changed to become a fertilizer.
However, due to improper fertilization methods and increasing amounts of fertilization, there are also some drawbacks. First, excessive application of nitrogen fertilizer converts unutilized nitrogen into gaseous nitrogen, and nitrous oxide is discharged into the atmosphere. The ozone layer; the second is that in the rain or irrigation, the excess nitrate in the soil will cause pollution of the groundwater system or waters, causing the crop to suffer from the damage or suffocating the fish in the pond; the third is the long-term single application of nitrogen fertilizer. Residual amount of sulfate and carbonate ions in the soil, and react with calcium ions to form soil compaction, which weakens the physical and chemical properties of the soil. Fourth, partial application of nitrogen fertilizer will also cause excessive growth of crops, causing environmental shading and inducing pests and diseases. Fifth, a large amount of fertilizer applied before the rain is likely to increase the concentration of the soil fertilizer solution, causing acute reverse osmosis, resulting in partial or large wilting or death of the crop.
How to minimize the negative impact of chemical fertilizers on the environment and maximize the utilization of fertilizers?
Balanced fertilization according to the target yield Within a certain range of fertilization levels, the crop yield is positively related to the amount of fertilization. If the total amount of fertilization or the amount of single fertilizer is excessively increased, the ecological balance will be lost due to the nutrient environment, but the yield will be reduced. Therefore, it cannot be said that the more fertilizer is applied, the higher the yield. It has been determined that for every 100 kg of rice produced, 1.85 kg of nitrogen, 0.85 kg of phosphorus pentoxide and 2.1 kg of potassium oxide are absorbed from the soil. For every 100 kg of lint produced, it needs to absorb 12 kg of nitrogen, 4 kg of phosphorus pentoxide and 12 kg of potassium oxide. Only balanced fertilization can prevent the phenomenon of gram between fertilizers. Of course, when determining the amount of fertilization, we must also consider the comprehensive factors such as climate, soil and fertility, and grasp it as appropriate.
Deep fertilization, fertilization with water, fertilization of fertilizers, volatile air pollution, and easy to lose contaminated waters. In production, it is necessary to adhere to the deep application of chemical fertilizers in order to protect the fertilizer with soil cover, reduce volatilization and loss, and prevent concentrated release of damaged crops. When the sensation is insufficient, it is necessary to properly irrigate the water and adjust the water to adjust the fertilizer. For example, when the evaporation amount is too large, the lack of sputum tends to lead to an increase in the concentration of the fertilizer solution, resulting in a fertilizer damage, and the fertilizer effect can be fully exerted.
Although the release of organic fertilizer organic fertilizer is slower, the nutrient is relatively complete, and the crop has a strong absorption capacity. After mixing chemical fertilizers with organic fertilizers, the available nutrients can be adsorbed by or combined with organic fertilizers, and then gradually released, which not only prolongs the time of fertilizer supply, but also reduces the unnecessary consumption of nutrients.
Improve the fertilizer preparation and regulate the peak of fertilizer supply. First, make a single-type fertilizer into a broad-spectrum compound fertilizer. Second, it is made into a special type of fertilizer according to the fertilizer characteristics of the crop. The third is to use the modified method to make the quick-release fertilizer. Slow-release fertilizer; Fourthly, the inorganic fertilizer and the bio-organic compound fertilizer are combined to make a superior compensatory granular fertilizer, and the application time is early or delayed, so that the peak of fertilizer demand and the peak of fertilizer supply are linked to each other, and the fertilizer effect is fully exerted. (Jinlian Chuangfei)
However, due to improper fertilization methods and increasing amounts of fertilization, there are also some drawbacks. First, excessive application of nitrogen fertilizer converts unutilized nitrogen into gaseous nitrogen, and nitrous oxide is discharged into the atmosphere. The ozone layer; the second is that in the rain or irrigation, the excess nitrate in the soil will cause pollution of the groundwater system or waters, causing the crop to suffer from the damage or suffocating the fish in the pond; the third is the long-term single application of nitrogen fertilizer. Residual amount of sulfate and carbonate ions in the soil, and react with calcium ions to form soil compaction, which weakens the physical and chemical properties of the soil. Fourth, partial application of nitrogen fertilizer will also cause excessive growth of crops, causing environmental shading and inducing pests and diseases. Fifth, a large amount of fertilizer applied before the rain is likely to increase the concentration of the soil fertilizer solution, causing acute reverse osmosis, resulting in partial or large wilting or death of the crop.
How to minimize the negative impact of chemical fertilizers on the environment and maximize the utilization of fertilizers?
Balanced fertilization according to the target yield Within a certain range of fertilization levels, the crop yield is positively related to the amount of fertilization. If the total amount of fertilization or the amount of single fertilizer is excessively increased, the ecological balance will be lost due to the nutrient environment, but the yield will be reduced. Therefore, it cannot be said that the more fertilizer is applied, the higher the yield. It has been determined that for every 100 kg of rice produced, 1.85 kg of nitrogen, 0.85 kg of phosphorus pentoxide and 2.1 kg of potassium oxide are absorbed from the soil. For every 100 kg of lint produced, it needs to absorb 12 kg of nitrogen, 4 kg of phosphorus pentoxide and 12 kg of potassium oxide. Only balanced fertilization can prevent the phenomenon of gram between fertilizers. Of course, when determining the amount of fertilization, we must also consider the comprehensive factors such as climate, soil and fertility, and grasp it as appropriate.
Deep fertilization, fertilization with water, fertilization of fertilizers, volatile air pollution, and easy to lose contaminated waters. In production, it is necessary to adhere to the deep application of chemical fertilizers in order to protect the fertilizer with soil cover, reduce volatilization and loss, and prevent concentrated release of damaged crops. When the sensation is insufficient, it is necessary to properly irrigate the water and adjust the water to adjust the fertilizer. For example, when the evaporation amount is too large, the lack of sputum tends to lead to an increase in the concentration of the fertilizer solution, resulting in a fertilizer damage, and the fertilizer effect can be fully exerted.
Although the release of organic fertilizer organic fertilizer is slower, the nutrient is relatively complete, and the crop has a strong absorption capacity. After mixing chemical fertilizers with organic fertilizers, the available nutrients can be adsorbed by or combined with organic fertilizers, and then gradually released, which not only prolongs the time of fertilizer supply, but also reduces the unnecessary consumption of nutrients.
Improve the fertilizer preparation and regulate the peak of fertilizer supply. First, make a single-type fertilizer into a broad-spectrum compound fertilizer. Second, it is made into a special type of fertilizer according to the fertilizer characteristics of the crop. The third is to use the modified method to make the quick-release fertilizer. Slow-release fertilizer; Fourthly, the inorganic fertilizer and the bio-organic compound fertilizer are combined to make a superior compensatory granular fertilizer, and the application time is early or delayed, so that the peak of fertilizer demand and the peak of fertilizer supply are linked to each other, and the fertilizer effect is fully exerted. (Jinlian Chuangfei)
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Welded Wire Mesh
It is widely used as machine protecting mesh, garden or residential fence and livestock cage in industrial or agricultural area. In addition, according to different flexibility, welded wire mesh can be divided into 2 types: welded mesh roll and welded Mesh Panel. The former has better flexibility.
Welded Wire Mesh,Electro Galvanized Welded Wire Mesh,Hot-Dipped Galvanized Welded Wire Mensh,Black Welded Wire Mesh
HENGSHUI YUZHENG IMPORT AND EXPORT CO., LTD. , https://www.yuzhengnails.com