I. Characteristics of Nitrosulfur-Based Compound Fertilizers
Nitrosulfur-based compound fertilizers have the characteristics of high crop absorption rate, rapid dissolution, pure potassium sulfate, and promoting root and fruit. .
Nitrate-sulfur-based compound fertilizer is rich in nitrate nitrogen. After application, nitrogen nutrition can be directly absorbed by crops. The fertilizer effect is fast and obvious. The nutrient release is more uniform, which can effectively improve the utilization rate of fertilizer.
Application on sulphur-loving crops such as beans can significantly increase the content of crop protein, vitamin C, etc., improve the quality of agricultural products, and improve the flavor of agricultural products. In addition, nitrosulfur-based compound fertilizer can also effectively ensure the balance of soil nutrient supply, improve crop growth environment, increase root vitality, promote healthy root development, and enhance plants’ ability to resist drought and disease.
Second, what kind of crops is Nitro-Sulfur-based compound fertilizer suitable for?
Nitro-sulfur-based compound fertilizer is suitable for upland crops, especially for crops that like sulfur and avoid chlorine or lack chlorine. Sulfur, saline and alkaline soil, there is no residual pollution.
As base fertilizer or top dressing, it can meet the nutrient requirements of crops in different growth periods and improve their disease resistance and lodging resistance. Practice has proved that the use of nitrosulfur-based compound fertilizers for grain crops is full of grains, multi-grain weight, large and even fruits, sweet and delicious, and can significantly improve the yield and quality of crops and increase economic benefits.
Nitrosulfur group is mostly used in chemical fertilizers. Compared with other traditional compound fertilizers, it has high nitrogen and high potassium, reasonable formula, good solubility, rapid fertilizer efficiency, favorable absorption of nutrients such as phosphorus and potassium, and high fertilizer utilization rate. It avoids or reduces the accumulation of nitrite in plants, and is a new type of compound fertilizer with high quality, high efficiency, green environmental protection and no pollution.
3. Precautions for the use of nitrosulfur-based compound fertilizers
1. Nitrosulfur-based compound fertilizers are easily soluble in water, so they cannot be used in paddy fields and in the south For use in rainy areas, it should not be applied to dry soil before and after heavy rain, and it is not advisable to pour too much water after application.
2. Nitrosulfur-based compound fertilizers should not be applied in paddy fields, as fertilizers will lose efficacy with water loss. Nitrosulfur-based compound fertilizers are easily decomposed by denitrifying bacteria under anaerobic conditions, resulting in nitrogen loss.
3. Nitrosulfur-based compound fertilizers cannot be mixed with organic fertilizers. Organic fertilizers contain a lot of organic matter. When encountering nitrosulfur-based compound fertilizers, under the action of denitrifying bacteria, nitrification will occur and nitrogen will be lost. white.
4. Nitrosulfur-based compound fertilizer has high solubility, which easily leads to high salt concentration in the soil solution, causing burning of seedlings and seeds. Attention should be paid to isolating seed fertilizers when using them.
5. When applying nitrosulfur-based compound fertilizer in fruit tree furrows, pay attention to the combination of one layer of fertilizer and one layer of soil. When applying vegetables in greenhouses, it can be applied once every 15 days, and the amount of fertilizer should not exceed 30-40 catties per mu.
6. The nitrosulfur-based compound fertilizer should be stopped 20 days before the crops are harvested to prevent the nitrite in the crops from exceeding the standard.
