Foliar fertilization of peanut has a high absorption and utilization rate of fertilizer, saving fertilizer and increasing the yield. Foliar application of nitrogen fertilizer, peanut plant absorption and utilization rate of 55.5% or more, the number of full fruit increased significantly, and the economic coefficient increased significantly. A large number of elements such as nitrogen, phosphorus, potassium and calcium, and trace elements such as molybdenum, boron, manganese and iron can be applied on the foliar surface. Phosphate fertilizer is applied on the foliage, generally increasing yield by 7%-10%; foliar application of molybdenum, boron, manganese, iron and other micro-fertilizers, generally increasing yield by 8%-10%.
1. Foliar nitrogen fertilizer is weighed 1 kg of urea, and 100 kg of fresh water is used to stir and dissolve 1% aqueous urea solution; if there is de-fermentation in the middle and late growth stages of peanut, or continuous rainfall in the growing season of peanuts, water in the soil, roots absorb nutrients When it is difficult, it can be sprayed, and 60 kg of fertilizer can be sprayed per acre.
2. Foliar application of phosphorus fertilizer Peanut has a strong ability to absorb phosphorus. Spraying 2%-3% aqueous solution of superphosphate in the middle and late growth stages can increase the rate of photosynthetic products to pods and increase yield. The specific method is to put 2-3 kg of superphosphate in 100 kg of water and stir it, and after 1 day and night, take the upper layer of clear liquid. Generally, it is sprayed once every 7-10 days, and even sprayed 2-3 times, spraying about 60 kg per acre. When preparing the fertilizer solution, be careful to remove the residue completely to avoid damage to the blade.
3. Foliar application of potassium fertilizer is generally formulated with grass ash. The preparation method is to take 5-10 kg of grass ash without rain, add 100 kg of water and stir well, soak for 12-14 hours, take the clear liquid, which is 5%-10% of the ash leaching liquid, spray 60 per acre. kg. Potassium sulphate aqueous solution can also be used. The preparation method is to add 2 kg of potassium sulphate in 100 kg of clean water, stir and dissolve to form a 2% potassium sulfate aqueous solution, and spray 60 kg per acre.
4. Foliar application of nitrogen and phosphorus fertilizers In peanut fields with phosphorus deficiency and nitrogen deficiency, 1% urea and 2% calcium superphosphate mixture can be sprayed. The mixed solution is prepared by adding 1 kg of urea to 100 kg of a 2% aqueous solution of superphosphate.
5. Foliar application of phosphorus and potassium fertilizers. Use 0.2-0.3 kg of potassium dihydrogen phosphate and spray 100 kg of water. It is also possible to take 5 kg of hay wood ash, soak 40-50 kg of water, and take 2 kg of calcium phosphate, sprinkle it into the soaking solution, stir well, and filter out the clear liquid after half a day. The remaining 20 kg of water is soaked and filtered, and the two clear liquids are mixed. The water is 100 kg, which is the potassium dihydrogen phosphate solution produced by the earth method. Each time, 60 kg per acre is sprayed, and even two sprays are obvious. The effect of increasing production.
6. Peanut Foliar Fertilization should pay attention to the problem According to the growth of peanuts and the growth period to determine the fertilization time, generally the best effect in the late growth period. To choose a cloudy day without wind, or to spray on the sunny day before 9:00 am and after 4 pm, if it rains within 4 hours after spraying, it should be sprayed after the rain. It is necessary to strictly control the concentration of spraying, and the concentration is likely to cause fat damage and damage the leaves. Fertilize the spray and spray it evenly. The front and back sides of the leaves should be sprayed.
1. Foliar nitrogen fertilizer is weighed 1 kg of urea, and 100 kg of fresh water is used to stir and dissolve 1% aqueous urea solution; if there is de-fermentation in the middle and late growth stages of peanut, or continuous rainfall in the growing season of peanuts, water in the soil, roots absorb nutrients When it is difficult, it can be sprayed, and 60 kg of fertilizer can be sprayed per acre.
2. Foliar application of phosphorus fertilizer Peanut has a strong ability to absorb phosphorus. Spraying 2%-3% aqueous solution of superphosphate in the middle and late growth stages can increase the rate of photosynthetic products to pods and increase yield. The specific method is to put 2-3 kg of superphosphate in 100 kg of water and stir it, and after 1 day and night, take the upper layer of clear liquid. Generally, it is sprayed once every 7-10 days, and even sprayed 2-3 times, spraying about 60 kg per acre. When preparing the fertilizer solution, be careful to remove the residue completely to avoid damage to the blade.
3. Foliar application of potassium fertilizer is generally formulated with grass ash. The preparation method is to take 5-10 kg of grass ash without rain, add 100 kg of water and stir well, soak for 12-14 hours, take the clear liquid, which is 5%-10% of the ash leaching liquid, spray 60 per acre. kg. Potassium sulphate aqueous solution can also be used. The preparation method is to add 2 kg of potassium sulphate in 100 kg of clean water, stir and dissolve to form a 2% potassium sulfate aqueous solution, and spray 60 kg per acre.
4. Foliar application of nitrogen and phosphorus fertilizers In peanut fields with phosphorus deficiency and nitrogen deficiency, 1% urea and 2% calcium superphosphate mixture can be sprayed. The mixed solution is prepared by adding 1 kg of urea to 100 kg of a 2% aqueous solution of superphosphate.
5. Foliar application of phosphorus and potassium fertilizers. Use 0.2-0.3 kg of potassium dihydrogen phosphate and spray 100 kg of water. It is also possible to take 5 kg of hay wood ash, soak 40-50 kg of water, and take 2 kg of calcium phosphate, sprinkle it into the soaking solution, stir well, and filter out the clear liquid after half a day. The remaining 20 kg of water is soaked and filtered, and the two clear liquids are mixed. The water is 100 kg, which is the potassium dihydrogen phosphate solution produced by the earth method. Each time, 60 kg per acre is sprayed, and even two sprays are obvious. The effect of increasing production.
6. Peanut Foliar Fertilization should pay attention to the problem According to the growth of peanuts and the growth period to determine the fertilization time, generally the best effect in the late growth period. To choose a cloudy day without wind, or to spray on the sunny day before 9:00 am and after 4 pm, if it rains within 4 hours after spraying, it should be sprayed after the rain. It is necessary to strictly control the concentration of spraying, and the concentration is likely to cause fat damage and damage the leaves. Fertilize the spray and spray it evenly. The front and back sides of the leaves should be sprayed.
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