According to the characteristics of peanut requirement fertilizer, planting soil characteristics and yield, organic fertilization should be mastered, inorganic fertilizer should be supplemented, and organic-inorganic combined fertilization principles should be applied. On the basis of increasing organic fertilization, nitrogen fertilizer should be supplemented and potash fertilizer should be increased. Micro fat.
First, enough basal fertilizer. The amount of basal fertilizer should account for 80% to 90% of the total amount of fertilizer. Some peanut farms only need to apply basal fertilizer, and they can also obtain high yields without topdressing at a later stage. Basal fertilizer can produce 1000-3000 kg of farmyard fertilizer per acre.
Second, increase phosphate fertilizer. Peanut requires more phosphorus than normal crops and has high absorption and utilization of phosphate fertilizers. Tests have shown that applying 10 kg of calcium phosphate per acre results in significant yield increase, and the aftereffect is obvious. When the phosphate fertilizer is applied irrationally, 2.5 to 5 kg of urea per acre is added as a seed fertilizer, which can exert the effect of increasing phosphate fertilizer. However, fertilizers and seeds must be isolated when applying seed fertilizers so as not to harm the seeds and affect their germination and emergence.
The third is to use calcium fertilizer. Peanut applies 10 kg of calcium sulfate per acre, which can not only regulate the pH value of the soil, increase the nitrogen fixation ability of the rhizobia, but also improve the nitrogen nutrition, promote the development of pods, and reduce the empty fruit and rotten fruit.
The fourth is to apply fertilizer. Artificial inoculation of peanut rhizobia can make peanut early nodule, multiple nodules, and improve the nitrogen fixation ability of peanut plants. At present, the peanut rhizobia agent (rhizobium fertilizer) promoted in production generally uses 25 grams per acre. When using it, add appropriate amount of water into a paste and mix the seeds, and pay attention to mix with the seed and prevent sun exposure. Also avoid mixing or contacting with bactericides.
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