Compound fertilizer refers to the general term for fertilizers containing two or three important plant nutrients - N, P or N, P, K. The compound fertilizer contains N, P or N, K two main nutrients called binary compound fertilizer. The three elements including N, P and K are called ternary compound fertilizers. In addition to the main elements of N, P and K, some compound fertilizers also contain various trace elements. This compound fertilizer containing various trace elements is called multi-component fertilizer. The grade of the ternary compound fertilizer is expressed by the total amount of (N ~ P2O5 - K2O)%, but each nutrient has a minimum of not less than 4%, and the total content is generally in the range of 25% to 60%. The total content of 25% to 30% is low-concentration compound fertilizer, 30% to 40% is medium-concentration compound fertilizer, and more than 40% is high-concentration compound fertilizer.
The application methods of compound fertilizer mainly include the following:
1. Do the base fertilizer application: Before planting, when planting the ground, sprinkle it on the surface and turn it to the bottom of the plow. Generally, 10-20 cm is best under the tillage layer.
2, do the application of seed fertilizer: must pay attention to the species, fertilizer isolation 8 ~ 10 cm as well.
3, do the flushing: in the later stage of crop growth, the fertilizer is dissolved and combined with watering, the effect of flushing is better.
4. For foliar fertilizer: After dissolving with 0.5% of Luxi potassium sulfate compound fertilizer, the supernatant is sprayed on the front and back of the leaves after 4 pm, and can be absorbed in 24 hours, sprayed every 5-7 days. It works quickly.
The application methods of compound fertilizer mainly include the following:
1. Do the base fertilizer application: Before planting, when planting the ground, sprinkle it on the surface and turn it to the bottom of the plow. Generally, 10-20 cm is best under the tillage layer.
2, do the application of seed fertilizer: must pay attention to the species, fertilizer isolation 8 ~ 10 cm as well.
3, do the flushing: in the later stage of crop growth, the fertilizer is dissolved and combined with watering, the effect of flushing is better.
4. For foliar fertilizer: After dissolving with 0.5% of Luxi potassium sulfate compound fertilizer, the supernatant is sprayed on the front and back of the leaves after 4 pm, and can be absorbed in 24 hours, sprayed every 5-7 days. It works quickly.
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