As we all know, summer sowing peanut has the characteristics of rapid emergence, fast growth, early flowering, short and concentrated flowering period, and it summarizes three fertilization experiences of nitrogen application, phosphorus application, and calcium supplementation.
First, early nitrogen: According to relevant information, peanuts absorb large amounts of nitrogen, the general production of 50 kilograms of pods require 3 to 3.5 kilograms of pure nitrogen. In fact, peanuts are symbiotic with Rhizobium, and 80% of the nitrogen needed is fixed by Rhizobium. When the peanuts enter the seedling stage, the nitrogen in the seeds is basically used up. At this time, the root-fixing ability of the root phylloxera on the seedling roots is very weak, and the quick-acting nitrogen fertilizer can be added early, which is not only conducive to the cultivation of strong seedlings, but also promotes the differentiation of flower buds in the early stage. Play a role in promoting the development of rhizobia. In general, 3000 kg of high-quality rotten farmyard fertilizer and 5 kg of urea are used as base fertilizer per acre. The time for applying seedling fertilizer can not be later than the flowering needle period, and should not be too much.
Second, the full application of phosphorus: peanuts, although the absorption of phosphorus is less, but phosphorus is very important for the growth and development of peanuts, phosphorus in the peanut growth process, not only can effectively enhance the rhizobia's nitrogen-fixing ability, but also can significantly promote the plant's Reproductive growth, and can improve the quality of peanuts. The peak period of phosphorus requirement for peanuts is mainly before the sowing period. Therefore, sufficient phosphorus fertilizer should be applied in the early stage. It is advisable to apply 12 kg of calcium phosphate per acre. After ridging the ridges, if there is insufficient phosphorus fertilizer, 3% of the calcium superphosphate solution can be sprayed, sprayed once every 7-10 days, and even sprayed 2 or 3 times.
Third, Qiao calcium: Peanut is a kind of crop that likes calcium particularly, according to the information introduction, every production 50 kilograms of pods, need? garden? About kilograms. The role of calcium is mainly to promote the development of pods and the formation of peanuts, which has a greater impact on the yield and quality. It is better to use gypsum as calcium fertilizer, and the dosage per acre is about 20 kg. The gypsum was ground into a fine powder when applied, and applied during the flowering period of peanuts and when most fruit needles were introduced into the ground. If the peanut tree grows too vigorously, you can use the feet to step on the peanuts. This will not only prevent the seedlings from prospering, but also help the fruit needles.
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