Application of phosphorus Fertilizer to Spring Peanut

The amount of base fertilizer should account for 80% to 90% of the total amount of fertilizer. Some peanut fields only apply base fertilizer, and high yield can be obtained without topdressing in the later stage. Base fertilizer can be applied with 1000 kg to 3000 kg of high-quality ring fertilizer per mu. Peanuts need more phosphate fertilizer than ordinary crops, and the absorption and utilization of phosphate fertilizer is also high. The experiment shows that the application of 10 kg calcium superphosphate per mu can significantly increase the yield and the after-effect is very obvious. When applying phosphate fertilizer in barren land, adding 2.5 kg urea per mu as seed fertilizer can give full play to the yield-increasing effect of phosphate fertilizer. However, in the application of seed fertilizer, the fertilizer and seed should be isolated so as not to hurt the seeds and affect their germination and emergence. The application of 10 kg calcium sulfate per mu of peanut can not only adjust the soil pH value, improve the nitrogen fixation ability of rhizobium, but also improve nitrogen nutrition, promote pod development, and reduce empty fruit and rotten fruit. Artificial inoculation of peanut rhizobia can make peanut nodules early and multiple nodules, and improve the nitrogen fixation ability of peanut plants. At present, the peanut rhizobium agent (rhizobium fertilizer) popularized in production generally uses 25 grams per mu. When it is used, it should be mixed with seeds in a paste with an appropriate amount of water, and should be mixed with seeds to prevent sunlight. In addition, it is also necessary to avoid mixing or contact with fungicides.