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2. Pay attention to the irrigated land with irrigation conditions and irrigation conditions. The application of biological potassium fertilizer has obvious effect on increasing yield. In the dry land without irrigation conditions, the living organism of biological potassium fertilizer can not grow and reproduce normally, and its effect of transforming and decomposing soil potassium and phosphorus is not obtained. Normal play, 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.
3, priority should be applied to the upper and lower sorghum replanting, potassium crops.
4, when storing and using biological potassium fertilizer can not be exposed to the sun, seed dressing should be carried out indoors or in the shed, the seeds of the fungicide should be dried in the shade, but not dried. When applying, it should be broadcasted on the same day of seed dressing. 5, 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.
6, pay attention to the early application of biological potassium fertilizer into the soil, bacteria from the settlement, reproduction to the decomposition of soil minerals to release potassium, phosphorus, a process is needed. 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.
7, to apply near, that is, to apply the biological potassium fertilizer around the root, the closer the better.
8, pay attention to the application of uniformity, in order to facilitate the full play of the microbial crops.
Huaxian County Fertilizer Station Yue Xiuli 
Pay attention to several aspects when applying biological potassium
1. Pay attention to soil conditions. The application of biological potassium fertilizer on loamy soil rich in organic matter, alkali nitrogen and available phosphorus is good. The soil that is too thin and the soil with poor water retention and fertilizer retention capacity should not be applied. The soil available potassium content is less than 100ppm. Potassium-deficient soil application has the best effect on increasing yield.
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