Spring peanut planting should emphasize increased phosphate fertilizer application
After spring peanut planting this year, there has been more rain, many overcast and rainy days, and high field humidity, which is favorable for the reproduction of peanut rust pathogen. Damage has already begun to occur. If measures are not taken in time to prevent and control it, peanut yield will be seriously affected. Peanut rust mainly damages leaves, but also damages stems, pod stalks and pod shells. Generally...
The amount of base fertilizer applied should account for 80%-90% of the total fertilizer application. Some peanut fields only apply base fertilizer and do not carry out topdressing later, yet can still obtain high yields. For base fertilizer, 1000-3000 kg of high-quality barnyard manure can be applied per mu.Peanuts require more phosphate fertilizer than general crops, and their absorption and utilization rate of phosphate fertilizer is also high. Experiments have proved that applying 10 kg of superphosphate per mu has a significant yield-increasing effect, and the residual effect is also very obvious. When applying phosphate fertilizer on barren land, adding 2.5-5 kg of urea per mu as seed fertilizer can better give play to the yield-increasing effect of phosphate fertilizer. However, when applying seed fertilizer, the fertilizer and seeds must be separated to avoid damaging the seeds and affecting their germination and emergence.
Applying 10 kg of calcium sulfate per mu to peanuts can not only regulate soil pH and improve the nitrogen-fixing ability of rhizobia, but also improve nitrogen nutrition, promote pod development, and reduce empty pods and rotten pods.
Artificial inoculation with peanut rhizobia can enable peanuts to form nodules earlier and more abundantly, improving the nitrogen-fixing ability of peanut plants. The peanut rhizobia inoculant (rhizobia fertilizer) currently promoted in production is generally used at 25 grams per mu. When using it, add an appropriate amount of water to make a paste and mix thoroughly with the seeds. Note that it should be mixed and sown immediately, protected from sunlight, and also avoid mixing or contact with fungicides.