The base fertilizer is the fertilizer that is added to the land before the crops are planted. It mainly improves the fertility of the soil. It is related to the entire stage of crop growth, especially the initial stage. Therefore, the bottom fertilizer is very important. The following will bring you the application method of base fertilizer. In terms of species, organic fertilizers (including farm manure, barnyard fertilizer, green manure and cake fertilizer) are most suitable for application as base fertilizers. In addition, nitrogen, phosphorus, potassium and micro-fertilizers are also suitable as base fertilizers. To determine the amount of base fertilizer application, especially the amount of fertilizer application, we must consider the level of soil fertility, in the soil with organic matter less than 1.2% should apply more than 3 cubic meters of organic fertilizer. When the available nitrogen, phosphorus, potassium and trace elements in the soil are lower than the effective critical value of crop fertilization, the bottom application of these fertilizers should be selected first, especially when the crop requires more phosphate fertilizer in the early stage. The specific dosage of various fertilizers as the base fertilizer can be determined by referring to the local field fertilizer efficiency test results and target yield and other comprehensive factors. Generally, about 30% of the total nitrogen fertilizer on the high-fertility soil is applied at the bottom, and the medium and low-fertility soils are 50%-70 Nitrogen fertilizer is used as a base fertilizer, and phosphorus, potash and micro-fertilizers are applied as much as possible at the same time. From the perspective of fertilizer varieties, ammonium carbon in nitrogen fertilizers, common calcium, diammonium, calcium magnesium phosphate fertilizers and three materials in phosphate fertilizers, potassium chloride, potassium sulfate, grass ash in potassium fertilizers, zinc fertilizers and manganese fertilizers in micro fertilizers, etc. All are suitable as base fertilizer. In terms of depth, the general base fertilizer should be applied to the entire arable layer, that is, a depth of 15-20 cm. For organic fertilizer, nitrogen fertilizer, potash fertilizer, and micro-fertilizer, they can be mixed and evenly spread on the ground, and then ploughed into the soil, so that the fertilizer and the fully ploughed soil can be evenly mixed to facilitate the absorption and utilization of nutrients by different root layers of the crop. Phosphate fertilizer has poor mobility, and it is easy to be fixed after application into the soil and loses its effectiveness. Therefore, the bottom application should be applied in two layers, that is, the lower layer should be applied to a depth of 15-20 cm, and the upper layer should be applied to a depth of about 5 cm. The upper layer mainly meets the demand for phosphorus in the seedling stage of the crop, and the lower layer supplies the phosphorus nutrition in the middle and later stages of crop growth. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Medical Equipment Disposal,Syringes Needles Sizes,Disposable Syringe,Insulin Syringe FOSHAN PHARMA CO., LTD. , https://www.fs-pharma.com