It is better to use organic fertilizer, phosphorus and potash fertilizers for peanut planting.
1. Use autumn soil preparation for ridges, apply decomposed manure, kangdong soil, retting green manure, etc.
2. Apply 15,000 to 30,000 kg/ha, ridge and ditches, spreading, bordering and spreading.
3. Ridge cultivation can also be used to spread fertilizer before planting in the same year.
4. When sowing, apply 150～225kg/ha of diammonium phosphate and 75～120kg/ha of potassium sulfate as seed fertilizer.
5. Apply lime to acid soil along with base fertilizer.
6. If the pH value (pH) is 6.0-6.5, lime is applied 450kg/ha, and the pH value is 5.5-6.0, lime is 675kg/ha.
How to fertilize?
In order to increase the effective nutrients of the peanut field soil and make it form a soil structure with pine and bottom solids and a coordinated air and water structure, organic fertilizers and chemical fertilizers must be combined in the types of fertilization. Organic fertilizer not only contains richer and more complete nutrients, but also contains organic matter that can improve the soil structure. Chemical fertilizers contain single nutrient elements and high nitrogen available nutrients. The combined application of the two can promote each other, improve fertilizer efficiency, improve soil structure, and continuously improve soil fertility. The results of the fertilizer effect test of Jiayou fulvic acid organic fertilizer on peanuts showed that the application of fulvic acid organic fertilizer has a significant effect on increasing the yield of peanuts. The effect of basal application of chemical fertilizer and 3 times the amount of fulvic acid organic fertilizer is as good as Compared with the treatment without organic fertilizer, the peanut yield increased by 166.2~187.0kg per mu.
Peanuts have the characteristics of lack of fertilizer. Most of the nutrients needed for high-yield peanuts are absorbed from the original soil. Therefore, in peanut fields with medium and above soil strength, the effect of fertilization in the previous crop is better than that in the peanut crop. The grain is harvested and the peanuts are yielded. . According to the experiment, under the condition that the total fertilization rate of the two crops is the same when the first crop is planted with sweet potato and the next crop is planted with peanuts, the yield of sweet potato with full fertilizer applied in the same stubble is 26.7% higher than that of no fertilizer. Applying full fertilizer to peanuts before cropping sweet potato can increase the yield by 14.7% compared with applying full fertilizer to peanut crops.
On the basis of fertilization in the previous crop, when peanuts are grown in the crop, fertilizers are appropriately increased. Although peanuts have a low absorption and utilization rate of nutrients from the fertilizer, they can increase the yield of middle-yield fields significantly and have a certain yield increase effect on high-yield fields. Compensate the soil nutrients consumed by the output. Therefore, the fertilization of peanut high-yield fields must adopt the previous crop to increase fertility and soil fertility, and the fertilization of the current crop to compensate for the soil fertility, and the balanced fertilization method of combining nutrients.
Before the peanut flowering and needle period, the root system has strong fertility absorption and a large amount of fertilizer. Therefore, all or most of the fertilizer required for high-yield peanuts should be combined with winter farming and early spring farming as basal fertilizer and seed fertilizer. If the base fertilizer is insufficient and no fertilizer is applied, top dressing can be appropriate. But the top dressing time should be early, usually before the flowering and needle period. In order to promote the plumpness of the pods in the middle and late stages of growth and development, extra-root topdressing can be carried out.
According to high-yield peanuts' absorption of the main nutrient elements of nitrogen, phosphorus, and potassium and the absorption and utilization rate of fertilizers, fertilization ratios of halving nitrogen, doubling phosphorus and full potassium are adopted. That is, 13.5 kg of nitrogen, 11 kg of phosphorus, and 16 kg of potassium per mu. The basic soil fertility of Zhongfei field is relatively low. To achieve high yields, the full amount of nitrogen and potassium should be applied, and the proportion of phosphate fertilizer should be doubled. That is, 27 kilograms of nitrogen, 11 kilograms of phosphorus, and 16 kilograms of potassium per mu.
