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First, pay attention to soil conditions. The application of biological potassium fertilizer on loamy soil rich in organic matter, alkaline nitrogen and available phosphorus is good. The soil that is too thin and the soil with poor water retention and fertility is not suitable for application. The soil with potassium available for quick potassium content less than 100mg/kg is not suitable. The application of yield increase is best.
Second, pay attention to water conservancy conditions. In irrigated land with irrigation conditions, the application of biological potassium fertilizer has obvious effect on increasing yield. In dry land without irrigation conditions, the living organisms in biological potassium fertilizer can not grow and reproduce normally. The effect of transforming and decomposing potassium and phosphorus in soil is not normal, and the effect is not obvious. The experiment proves that the use of biological potassium fertilizer in the fields of high water and fertilizer and high nitrogen and phosphorus can balance the supply of nitrogen, phosphorus and potassium, and the yield increase of crops is large.
Third, it should be applied preferentially to the upper and lower sorghum, and to the potassium crop.
Fourth, when storing and using biological potassium fertilizer, it should not be exposed to sunlight. The seed dressing should be carried out indoors or in the shed. The seeds of the fungicide should be dried in the shade and not dried. When applying, it should be broadcasted on the same day of seed dressing.
Fifth, the use of biological potassium fertilizer for topdressing can be mixed with urea, ammonium nitrate, ammonium sulfate, potassium sulfate, potassium chloride and other chemical fertilizers. However, it should be mixed and used, should not be stored, must not be mixed with alkaline substances such as grass ash, so as not to kill the cells, affecting fertilizer efficiency.
Sixth, pay attention to early application. Since the application of biological potassium fertilizer to the soil, bacteria need to undergo a process from colonization and reproduction to decomposition of soil minerals to release potassium and phosphorus. In order to ensure sufficient time to complete the process, and to provide potassium and phosphorus nutrients from the crop seedling period, it is necessary to pay attention to early application. According to the test, the application effect is better when the foundation is applied, seed dressing, rooting and transplanting. If it is top dressing, it should be chased early in the seedling stage; on the contrary, the later the application, the worse the effect.
Seventh, to apply near, that is, to apply the biological potassium fertilizer around the roots, the closer the better.
Eighth, it is necessary to pay attention to the application, so that it is beneficial to the full play of the role of the microbial agent.
Source: China Agricultural Information
How to apply biological potassium fertilizer
Bio-potassium fertilizer is a new type of stimulation agent, namely silicate fungicide. It has two dosage forms: one is a grass charcoal dosage form, the appearance is black powdery solid, the moisture is loose, and the water content is about 30%; the other is a liquid dosage form, the appearance is milky white, turbid, and slightly sour. According to the data, 1kg of bio-potassium fertilizer per 667 square meters is equivalent to 15kg of potassium sulphate or 15kg of potassium chloride or 30kg of superphosphate per 667 square meters, and it has no fertility and no pollution to the soil. Production practice shows that the application of biological potassium fertilizer must pay attention to the key application techniques under certain environmental conditions, in order to exert a good yield increase effect.
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