1. Use of compound fertilizers
1. Soil testing and fertilization
It is best to test soils before use , to understand the texture and nutritional status of the field soil, balance fertilization, and improve fertilizer utilization.
2. Suitable for base fertilizer
Compound fertilizer should not be used as fertilizer in seedling and middle and late stages to prevent greed and growth. Compound fertilizer decomposes slowly and is suitable for crops that use compound fertilizer as base fertilizer when sowing.
3. Appropriate concentration
There are high, medium and low concentration series of compound fertilizers on the market, generally low concentration total nutrients are 25%-30% The medium concentration is between 30% and 40%, and the high concentration is above 40%. Because of different regions, soils and crops, choose and use economical and efficient compound fertilizers.
4. Deep application of covering soil
The compound fertilizer contains two or more kinds of macroelements. Phosphorus and potassium are easily fixed by the soil, so the compound fertilizer should be applied deeply to cover the soil.
Second, it is better to apply compound fertilizer before or after rain
It is better to use compound fertilizer after rain. Because compound fertilizer is used before rain, it will be diluted by rain, resulting in waste or loss of fertilizer efficiency.
After it rains, there will be a certain amount of water on the ground, and the soil will be relatively wet. At this time, using compound fertilizer can not only dissolve and absorb, but also cause less waste, so compound fertilizer should be used after rain. better.
If it rains immediately after applying the compound fertilizer, it should be reapplied again after the rain.
In addition, pay attention to the dosage when using compound fertilizer for crops, if the dosage is too high, it will burn the roots.
