1, soil fertilizer. When peanuts are found to lack nutrients after flowering, they can combine cultivating 10-15 kilograms of urea per acre, or 12-14 kilograms of diammonium phosphate, or 10-15 kilograms of potassium sulfate, or 40-50 kilograms of lime. In short, what elements are lacking in plant growth will make up for what fertilizer in the soil.
2, top dressing outside the root. When the lack of nutrition in peanuts is not very serious, it can be supplemented by applying root-spraying fertilizers. In particular, it is inconvenient to apply fertilizer to the soil of mulching peanuts. The top dressing time is usually from July 20 to August 20. Spraying concentrations of various fertilizer solutions are as follows:
(1) 1-2% urea aqueous solution; (2) 0.1-0.3% potassium dihydrogen phosphate aqueous solution; (3) 2-4% superphosphate calcium water solution; (4) 2% aqueous ammonium sulfate solution; (5) 2-3% potassium sulfate aqueous solution; (6) 0.2% ferrous sulfate aqueous solution (7) 0.05-0.1% ammonium molybdate aqueous solution; (8) 0.2-0.3% boric acid aqueous solution; (9) 0.5% magnesium sulfate aqueous solution; (10) 0.1-0.2% zinc phosphate aqueous solution. At present, various plant growth regulators are also used in peanut production, and they can be directly sprayed on the leaves of plants at the same concentration.
Spraying method, choose sunny and windless weather, spraying fertilizer at 10:00 or 3:00 PM, spray once every 7-10 days, and spray 2-3 times. After 3-4 hours of spraying, the rain should be sprayed. Usually, 50-60 kg of solution is sprayed per mu. Before spraying, it is best to add a small amount of neutral detergent (60 grams of fertilizer water plus 30 grams, do not add alkaline detergent) to the fertilizer water with good fertilizer, which will help the leaves to absorb the fertilizer and improve the fertilizer efficiency. In the case of multiple detoxification symptoms concurrently, two or more fertilizers may be mixed and sprayed, for example, 1-2 kg of urea may be added to 100 kg of a 2-4% aqueous solution of superphosphate.
Insulin Syringes Needle,Disable Syringe,Monoject Syringe,10 Ml Syringe
FOSHAN PHARMA CO., LTD. , https://www.fospharma.com