What are the measures to prevent peanut shells?
2. Administration of superphosphate. Because superphosphate contains not only phosphorus, but also a large amount of gypsum, which is also called calcium sulfate, it can increase calcium fertilizer for the soil. Generally, 30-40 kg of calcium phosphate is applied per acre for base fertilizer application.
3. Spray boron fertilizer. Boron is a necessary nutrient for the normal development of plant flowers and reproductive organs. Sandy soil and severely deficient soil can apply 1 kg of borax per acre as base fertilizer or seed fertilizer. In general, the soil can be topdressed 2 to 3 times with 0.2%-0.3% borax solution at the initial flowering stage.
Spray molybdenum fertilizer. Molybdenum fertilizer can promote the development of peanut nodules, the leaves are dark green, the growth is strong, and the fruit is full and full. The root dressing is performed with 0.3%-0.5% ammonium molybdate solution per acre at the initial flowering stage or the lower needle-binding stage.
Deep application of potassium fertilizer. Potassium fertilizer should be applied deeper below the result layer to prevent excessive potassium in the resulting layer, affecting the absorption of calcium and increasing rotten fruit.
4. If the peanut seedlings are weak and the leaves are light, 0.3% urea and 0.3% potassium dihydrogen phosphate solution can be added. Once every 7-10 days, continuous spraying 2-3 times can reduce the peanut shell rate and improve the firmness. The rate can generally increase production by more than 10%.
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