In recent years, the outstanding application effects of humic acid fertilizer products in agriculture and forestry have attracted widespread attention from the international community, and farmers have begun to rush to buy this product. I believe you are very aware of its obvious effects in agriculture and forestry, but do you know how to use humic acid fertilizer? Correct and reasonable use methods can make the products in your hands fully exert their effects. Today I will explain how to use humic acid fertilizer one by one. Contraindications in the use of humic acid fertilizers.
1. The pH value for potassium humate and sodium humate liquid fertilizer spraying is best controlled between 7.2 and 7.5. If it exceeds 8, add a small amount of acid to adjust.
2. Ammonium humate can fully exert its fertilizer effect only in an environment with sufficient soil moisture.
3. Various types of humic acid fertilizers have different nutrient proportions and different production processes. Therefore, the fertilizer properties vary greatly, and the appropriate dosages are also different. The fertilizers must be applied according to the instructions for use in various places, and the dosage cannot be increased or decreased arbitrarily.
4. Humic acid fertilizers cannot completely replace chemical fertilizers and farmyard manure. They are mutually reinforcing. Humic acid fertilizers are more effective when used in conjunction with chemical fertilizers and farmyard manure.
5. It is best to choose activated humic acid fertilizer. Unactivated humic acid fertilizer will not start to activate until it reaches the soil, and the fertilizer effect will be very slow.
6. Since pure fulvic acid is not conducive to the formation of water-stable aggregate structures in the soil, pure fulvic acid fertilizers should not be applied to the soil and should be applied as foliar fertilizers. However, what is usually seen on the market is not pure fulvic acid fertilizer, so it is okay to apply drip irrigation to the soil normally.
7. The stimulating effect of humic acid fertilizer is related to the temperature. The effect is faster at high temperature and slower at low temperature. The fertilizer effect is optimal when the temperature is greater than 18°C. However, if it exceeds 38°C, the use of the product must be stopped or reduced, otherwise it may cause excessive crop respiration and affect the accumulation of dry matter and yield of the crop.