In the process of cultivating peanuts, top-dressing peanuts is one of the most important steps. To know that this is directly related to the quality and output value of peanuts, the question is, how do you grow fertilizer scientifically when cultivating peanuts?
First, the top dressing time of peanuts
1. Seedling stage
a, 3-5 leaf application of available nitrogen fertilizer and promotion of Kao Wang No. 3, can promote peanut flower bud differentiation, multiple flowering;
b. It has a very good effect on the promotion of early-onset branch growth and the addition of flowers and pods.
2. Flowering and scarring
a. Overdressing nitrogen fertilizers after flowering can cause legumes and leaves of peanuts to grow and grow in the late stages;
b. No nitrogen fertilizer is applied after the flowers are bloomed, and the last cultivator weeding, compound fertilizer and calcium fertilizer are combined in the initial flowering period of peanuts.
c. Spraying fruit to promote the thickening of the underground nutrient transport catheter;
d. The fruits of fruit enlargement and dynamism make the fruit type robust and improve the quality and output value of peanuts.
3. The full period of fruit
a. The application amount of phosphate fertilizer is fully added to the preserved fruit;
b. Adopt the method of spraying phosphorus out of the root, using 0.3% potassium dihydrogen phosphate plus a new high fat film spray;
c. The utilization of useful components of fertilizers should be improved. Spray every 7-10 days and spray two or three times in succession.
Second, peanut top dressing method
1. Seedling fertilizer
a. Peanuts in the seedling stage if the soil fertility is relatively low, or the amount of base fertilizer is not sufficient, it will lead to poor growth of wheat seedlings;
b. Early or early application of Miaofei, prompting premature emergence of seedlings;
c. Fertilizers at the seedling stage should be applied before the initial flowering stage. Topdressing fertilizers should be dominated by nitrogenous fertilizers, and they should be used together with phosphorus and potassium fertilizers.
d. Apply 8-10 kg of nitrogen fertilizer per acre, or apply 30-40 kg of compound fertilizer;
e. When you are on the fat, you can select the appendage, and you can also choose to open the ditch.
2. Needle period
a. After the peanuts begin to bloom, the plants grow vigorously, many useful flowers are opened, and the fruit needles are successively added into the soil in large quantities, thus adding fertilizer nutrients;
b, should be based on the growing growth of peanuts, topdressing basal fertilizer, Miao Fei;
c. Peanut rhizobia can maintain strong nitrogen, but the demand for nitrogen fertilizer is not great, but the demand for phosphorus, calcium, and potassium fertilizers is urgent. Therefore, the amount of nitrogen fertilizer is controlled, and topdressing is mainly phosphorus, potassium, and calcium fertilizers to prevent the plants from becoming leggy;
d. 40 pounds of calcium super phosphate per acre and 500 pounds of high-quality organic fertilizer can effectively improve the demand of peanuts for phosphorus and calcium nutrients.
3. Leaf spray fertilizer
a, foliar spray fertilizer has a high absorption and utilization, save fertilizer, promote full full fruit, add production value;
b. In the late growth stage of peanut, when the roots are getting old, the foliar spray has the best effect;
c. The efficiency of absorption and utilization of foliar spray fertilizer is up to 50%;
d. In the later period of growing peanuts, 200 grams of potassium dihydrogen phosphate was topdressed per acre, and 120 kg of water was sprayed on the foliage. The spray was applied once every 7 days and sprayed three times in succession.
4. Spring peanut top dressing method
a. The greatest nutrient characteristics of peanuts are root nodules and symbiotic nitrogen fixation habits. Therefore, peanuts can be topdressed according to the symbiotic nitrogen fixation habit.
b. Break the membrane and induce seedlings when the top soil of peanuts is covered. Cover some wet soil on the membrane hole, and then break the pier and clear the trees after the cotyledons emerge.
c. Apply 7-lO kg of compound fertilizer per acre in the peanut plantation period and cooperate with 5 kg of urea fertilizer;
d. The role of nitrogen fixation in peanut roots, but in order to promote better long seedlings in the long-term growth of wheat seedlings, a certain amount of urea can be properly applied.
5. Top dressing considerations
Before and after the flowering of peanuts, if there is arid climate, do not flood.
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