Because peanuts grow more soil texture sand, fertility is low, poor water retention and fertilizer. Therefore, on the basis of applying basal fertilizer and applying seed fertilizer, peanuts on the sandy land should be highly valued during the growth phase to obtain high yields. The main points are as follows:
First, due to lack of fertility in the Miaofeisha sandy land, and the weak root-fixing ability of nitrogen at the seedling stage, it is necessary to apply early Miaofei. General seedling fertilizer before the beginning of flower application, the number should not be too much, generally with 10 to 15 kg of urea per mu, or about 250 kg of high quality manure with a small amount of phosphorus and potassium fertilizer (superphosphate 10 kg, potassium chloride 3 kg) mixed. 50-75 kg of plant ash can also be used instead of potassium chloride. Then open up the ditch and combine it with loose soil.
Second, re-application of flowering peanuts Rhizobium have begun to fix nitrogen, generally do not need topdressing nitrogen fertilizer. Alkaline soil can be applied to 5 ~ 7.5 kg of gypsum powder per acre, mixed with 100 ~ 150 kg thin circle of manure, evenly spread on the peanut ridge. Can also be used per acre 10 to 15 kg of superphosphate, crushed after mixing 15 to 25 kg of fine ring dung, sprinkled on the peanut ridge. Combined with cultivator soil, phosphorus and calcium fertilizers are buried in soil and the effect is good. The effect of single application of potassium fertilizer on peanut production is not obvious, and the combined application of potash fertilizer and phosphate fertilizer has a good effect of increasing production. Each can use potassium sulfate or potassium chloride 5 to 10 kilograms and superphosphate 15 kilograms to mix.
Third, clever application of foliar fertilizer to promote fruit plump, increase production. Can be started in early August, spraying 2% to 3% of calcium superphosphate solution (dissolving superphosphate, filtering and taking supernatant) 2 or 3 times, spraying once every 7 to 10 days, per acre Fertilizer 50 ~ 100 liters, can increase production by more than 5%. If the flower growth is weak, 100-200 grams of urea can be added per acre. In zinc- and boron-deficient soils and soils, zinc sulfate and borax are not added to the base fertilizer. Zinc and boron fertilizers can be sprayed at the seedling stage to the initial stage. Generally 0.1% ~ 0.2% concentration of zinc sulfate and borax is appropriate, continuous spray 2 to 3 times, spaced 7 to 10 days spray 1 effect is better. It is best to choose a cloudy or sunny afternoon after 4 pm for spraying. If it is raining after spraying, it should be re-sprayed.
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