Peanuts are important economic crops. When fertilizing, master organic fertilizers should be mastered, supplemented by inorganic fertilizers, and organic and inorganic fertilizers should be used in combination with fertilization. Balanced fertilization and topdressing should be used to achieve stable and high yields.
Fertilizer base fertilizer accounted for 80%-90% of the total fertilizer application. Some peanut farms only need to apply base fertilizer. Even if there is little or no fertilizer applied later, they can achieve high yields. This shows the importance of basal fertilizer. Generally, the quality of agricultural manure fertilizer per acre is 2,000 kilograms, 15 to 20 kilograms of diammonium phosphate, 40 to 50 kilograms of superphosphate, 5 to 7.5 kilograms of potassium chloride, 4 to 5 kilograms of urea, and 0.5% of phosphate fertilizer. The proportion of ～1% after being mixed with organic fertilizers will help improve fertilizer efficiency. Some basic ground can be gypsum 15 ~ 25 kg, molybdenum fertilizer can be 10 to 20 grams of ammonium molybdate or 0.1% to 0.2% solution, soaking for 3 to 5 hours, can be sown after drying, plaster or lime can be combined with cultivated land Shih is used as a basal fertilizer.
Clever application of top dressing is light to catch Miao Fei, peanut seedling fertilizer can promote its early hair, strong seedlings, branches and more, so that more flowers, fruit, increased yield, seedling needs less fertilizer, but the base fertilizer is insufficient or no base fertilizer , Appropriate post-appropriate nitrogen fertilizer should be applied to promote seedling growth and flower bud differentiation. It can directly use 3-4 kg of urea per mu before flowering, or 250 to 300 kg of water for manure and feces and urine. The second is to apply flower needle fertilizer. Flower need more fertilizer during the needle period, the role is to promote peanuts more flowering, more species, more results. Generally, 4 to 5 kg of urea, 6 to 7 kg of diammonium phosphate, 5 to 6 kg of potassium sulfate, or 50 to 75 kg of plant ash are used per acre. If the growth time of the lower needle is weak, it can also add 100-250 grams of urea in combination with spraying when applying extra-root fertilizer. The third is skillful treatment. The period of scarring is the period with the most need for fertilizer, and it is also the key period for accelerating the accumulation of dry matter and the development of fruit and fruit. Seize four to five kilograms of diammonium phosphate and 6 to 8 kilograms of superphosphate per acre before closing the line. If no boron or zinc fertilizer is applied, spray 2 to 3 times during the application of knot fertilizer. %-0.2% zinc sulfate or borax aqueous solution. Peanuts in the late growth period, because the plants have been sealed, not suitable for chase fertilizer, but for the phenomenon of defertilizer, available concentration of 1% ~ 2% of urea solution foliar spray fertilizer, in order to improve the seed setting rate and strong fruit.
The addition of calcium to calcium can promote the formation of pods, reduce empty pods and increase the number of full pods. When lime is used as topdressing, it can be combined with cultivating soil in the early flowering stage, and shallowly applied in the peanut tree growing area. Usually, 5-8 kg per mu, or 7.5-10 kg of calcium sulfate per mu.
Artificially inoculating peanut rhizobia with topdressing fungus fertilizer can promote early and multi-node nodules in peanuts and increase plant nitrogen fixation capacity. At present, the peanut rhizobia agent (rhizobium fertilizer) promoted in production is generally used in an amount of 25 grams per mu. When used, the amount of water added is adjusted to a paste and the seeds are mixed well. Note that with the growth, the sun can not be prevented. Mixed with or contact with germicide.
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