What should we pay attention to when applying biological potash fertilizer?

What should we pay attention to when applying biological potash fertilizer? Biological potash fertilizer is a new type of yield-increasing agent, namely silicate bacterial agent. It has two dosage forms, one is peat dosage form, the appearance of black powdery solid, moist loose, water content of about 30%. The other is a liquid dosage form, which is milky white, turbid and slightly sour. According to the data, the application of 1 kg biological potash fertilizer in 667 square meters is equivalent to applying 15 kg potassium sulfate or 15 kg potassium chloride or 30 kg superphosphate in 667 square meters, and it can improve the soil fertility and has no pollution to the soil. However, the production practice in some areas in recent years shows that the application of biological potash fertilizer must pay attention to grasp the key application techniques under certain environmental conditions in order to give play to a good yield-increasing effect. First, we should pay attention to the soil conditions. Biological potassium fertilizer has a good effect on loam soil rich in organic matter, alkali-hydrolyzable nitrogen and available phosphorus, but it is not suitable to apply in too barren sandy land and soil with poor ability of water and fertilizer conservation. The effect of increasing yield is the best in potassium-deficient soil with soil available potassium content less than 100 ppm. Second, attention should be paid to water conservancy conditions. In irrigated land, the yield increase effect of biological potash fertilizer is obvious, in dry land without irrigation condition, the bacteria in biological potash fertilizer can not grow and reproduce normally, and its function of transforming and decomposing soil potassium and phosphorus can not be brought into full play, and the effect is not obvious. The experiment shows that the application of biological potassium fertilizer in the fields with high water and fertilizer, high nitrogen and phosphorus can balance the supply of nitrogen, phosphorus and potassium, and increase the yield of crops greatly. Third, priority should be given to multiple cropping and potassium-loving crops in the upper and lower crops. Fourth, the storage and use of biological potash fertilizer should not be exposed to the sun, seed dressing should be carried out indoors or in the greenhouse, and seeds mixed with bacteria should be dried in a cool place, not in the sun. The seed should be mixed and sowed on the same day when it is used. Fifth, biological potash fertilizer can be mixed with urea, nitrate, ammonium sulfate, potassium sulfate, potassium chloride and other chemical fertilizers. However, if it is to be mixed and used now, it should not be stored and should not be mixed with alkaline substances such as plant ash, so as not to kill bacterial cells and affect fertilizer efficiency. Sixth, we should pay attention to early application. Because after the biological potash fertilizer is applied into the soil, it takes a process for bacteria to settle and reproduce to decompose and release potassium and phosphorus from soil minerals. In order to ensure that there is sufficient time to complete this process, and to provide potassium and phosphorus nutrients from the seedling stage of crops, attention must be paid to early application. According to the experiment, the effect of basic application, seed dressing, dipping root and transplanting seedling is better before soil preparation. If it is topdressing, it should be topdressing early in the seedling stage; on the contrary, the later the application, the worse the effect. Seventh, close application, that is, biological potash fertilizer should be applied around the root, as close as possible. Eighth, we should pay attention to evenness, so that it is conducive to the full play of bacterial crops. Click to get more nitrogen, phosphorus, potassium application techniques click to get more fertilizer application techniques