Because the soil texture of peanut planting is mostly sandy, the fertility is low, and the water retention and fertility are poor. Therefore, on the basis of applying the base fertilizer and applying the seed fertilizer, the peanuts in the sand-growing land should pay attention to the long-term topdressing in order to obtain high yield. The main points are as follows:
I. Discretion of seedlings and fertilizers Due to insufficient fertility, and the ability of nitrogen fixation in roots is weak, it is necessary to apply early seedlings. Generally, the seedling fertilizer should be applied before the initial flowering, and the quantity should not be too much. Generally, 10 to 15 kg of urea per acre is used, or about 250 kg of high-quality manure and a small amount of phosphorus and potassium fertilizer (10 kg of superphosphate and 3 kg of potassium chloride) are mixed. Potassium ash 50-75 kg can also be used instead of potassium chloride. Then ditch the strip, combined with loose soil and grass.
Second, heavy application of flower fertilizer Peanut flower rhizobium has begun to fix nitrogen, generally do not need to apply nitrogen fertilizer. Alkaline soil can be applied with 5 to 7.5 kg of gypsum powder per acre, mixed with 100 to 150 kg of fine ring dung, and evenly sprinkled on the peanut ridge. It is also possible to use 10 to 15 kilograms of calcium phosphate per acre, and after mixing, mix 15 to 25 kilograms of finely packed manure and sprinkle it on the peanut ridge. Combined with cultivating soil, the phosphorus and calcium fertilizers are buried in the soil, and the effect is better. Peanut single application of potassium fertilizer has no obvious effect on yield increase. Potassium fertilizer combined with phosphate fertilizer has a good effect of increasing yield. Each mu can be mixed with 5-10 kg of potassium sulfate or potassium chloride and 15 kg of superphosphate.
Third, skillfully apply foliar fertilizer to promote fruit fullness and increase yield. It can be started at the beginning of August, spraying 2% to 3% of calcium superphosphate solution on the foliar surface (dissolving and filtering the superphosphate) and taking the supernatant for 2 to 3 times, spraying once every 7 to 10 days, for each acre. 50-100 liters of fertilizer can increase production by more than 5%. If the flower grows weakly, 100 to 200 grams of urea per acre can be added. In soil soils deficient in zinc and boron, zinc sulfate and borax are not added to the base fertilizer, and zinc and boron fertilizers can be sprayed in the appropriate amount at the seedling stage. Generally, zinc sulfate and borax are preferably used in a concentration of 0.1% to 0.2%, and continuous spraying is carried out 2 to 3 times, and the spraying is performed once every 7 to 10 days. It is best to choose spray after 4 pm on a cloudy or sunny day. If it rains immediately after spraying, it should be re-sprayed.
I. Discretion of seedlings and fertilizers Due to insufficient fertility, and the ability of nitrogen fixation in roots is weak, it is necessary to apply early seedlings. Generally, the seedling fertilizer should be applied before the initial flowering, and the quantity should not be too much. Generally, 10 to 15 kg of urea per acre is used, or about 250 kg of high-quality manure and a small amount of phosphorus and potassium fertilizer (10 kg of superphosphate and 3 kg of potassium chloride) are mixed. Potassium ash 50-75 kg can also be used instead of potassium chloride. Then ditch the strip, combined with loose soil and grass.
Second, heavy application of flower fertilizer Peanut flower rhizobium has begun to fix nitrogen, generally do not need to apply nitrogen fertilizer. Alkaline soil can be applied with 5 to 7.5 kg of gypsum powder per acre, mixed with 100 to 150 kg of fine ring dung, and evenly sprinkled on the peanut ridge. It is also possible to use 10 to 15 kilograms of calcium phosphate per acre, and after mixing, mix 15 to 25 kilograms of finely packed manure and sprinkle it on the peanut ridge. Combined with cultivating soil, the phosphorus and calcium fertilizers are buried in the soil, and the effect is better. Peanut single application of potassium fertilizer has no obvious effect on yield increase. Potassium fertilizer combined with phosphate fertilizer has a good effect of increasing yield. Each mu can be mixed with 5-10 kg of potassium sulfate or potassium chloride and 15 kg of superphosphate.
Third, skillfully apply foliar fertilizer to promote fruit fullness and increase yield. It can be started at the beginning of August, spraying 2% to 3% of calcium superphosphate solution on the foliar surface (dissolving and filtering the superphosphate) and taking the supernatant for 2 to 3 times, spraying once every 7 to 10 days, for each acre. 50-100 liters of fertilizer can increase production by more than 5%. If the flower grows weakly, 100 to 200 grams of urea per acre can be added. In soil soils deficient in zinc and boron, zinc sulfate and borax are not added to the base fertilizer, and zinc and boron fertilizers can be sprayed in the appropriate amount at the seedling stage. Generally, zinc sulfate and borax are preferably used in a concentration of 0.1% to 0.2%, and continuous spraying is carried out 2 to 3 times, and the spraying is performed once every 7 to 10 days. It is best to choose spray after 4 pm on a cloudy or sunny day. If it rains immediately after spraying, it should be re-sprayed.
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