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Peanut base fertilizer application technology
Peanut basal fertilizer is very important. Due to the weak nitrogen fixation ability of early-stage peanut rhizobia, fruit needles have been soiled in the middle and late stages, and fertilizers are difficult to apply. Sufficient base fertilizer can meet the nutrient supply during the whole growth period of peanuts. For high-yielding fields, 667m2 should be applied to organic fertilizer 3~4m3, superphosphate 40~60kg or diammonium phosphate 15~20kg, plant ash 50~100kg, ammonium bicarbonate 15~25kg. Organic fertilizer can provide a variety of nutrients for the growth and development of peanuts, and also provide a carbon source for rhizobia and various microorganisms. The appropriate amount of nitrogen fertilizer at the end can promote the growth of peanut seedlings and the formation of rhizobia. Phosphate fertilizers are preferably mixed with organic fertilizers after retanning and are mixed in the proportion of 0.5% to 1% in the fertilizer pit or pigsty or after being mixed with organic fertilizers. Generally, the utilization rate of phosphate fertilizer is increased by 50% to 80% compared with direct application. %. Calcium-deficient soil application of calcium can promote root development, enhance nitrogen metabolism, promote the formation and fullness of pods, reduce empty pods, and increase the fruit-filling rate.