Peanut late spraying foliar fertilizer benefits more

Foliar fertilizer spraying of peanut has the effects of high fertilizer absorption and utilization, saving fertilizer, increasing yield and so on. Foliar fertilizer spraying in the middle and later stage of peanut can effectively improve the photosynthetic efficiency of peanut plant, increase the content of dry matter, make the plant develop well, promote the satiety of peanut pods with large pods, increase yield and income, and improve pod quality.

Calcium superphosphate leaching solution: peanut leaves have a strong ability to absorb phosphorus. At flowering and podding stage, 1.5%-2% concentration of calcium superphosphate aqueous leaching solution (leaching for 14-16 hours) is used twice, and about 60 kg per mu is sprayed each time. It can enhance flowering and podding performance, and generally increase production by 7% and 10%.

Urea solution: where the soil is sandy, the soil fertility is thin, the base fertilizer is insufficient, the plant is short, the growth is weak, and the leaves are yellowed and de-fertilized, 0.7% 1% urea solution is sprayed on the leaves from the flowering stage to the podding stage. For the fields with the trend of crazy growth of Miao Wang Zhujian, there is no need to spray urea.

Plant ash leaching solution: plant ash is farm potash fertilizer, with an average potassium content of 5%-6%, of which more than 90% is water-soluble potassium carbonate. From the beginning of peanut podding to the pod expansion stage, spraying 5% concentration of plant ash water extract for 2 times, combined with bacon, could increase peanut yield by more than 20%.

Potassium dihydrogen phosphate solution: potassium dihydrogen phosphate is a kind of phosphorus and potassium compound fertilizer, which can meet the needs of peanut needle development, increase the number of full fruits, increase 100-grain weight and oil content, prevent premature senility and increase yield. Generally, from flowering to pod expansion, 0.3% potassium dihydrogen phosphate was sprayed on the leaves twice.

Ammonium molybdate solution: molybdenum can promote the nitrogen fixation of legume rhizobia, spray at flowering stage can also coordinate vegetative growth and reproductive growth, promote pod fullness, and increase production by more than 10%. The effect of seed dressing with ammonium molybdate combined with foliar spraying was the best. 0.1% ammonium molybdate aqueous solution can be sprayed twice from peanut stage to podding stage.

Boron fertilizer solution: boron can promote pollen germination, pollination and fertilization, increase peanut fruit setting rate, increase chlorophyll, promote photosynthesis, increase fruit weight and fruit satiety rate. Generally, 0.2% borax or boric acid aqueous solution is sprayed once in the early flowering stage and in the full flowering stage.

Ferrous sulfate solution: peanuts are extremely sensitive to iron. When planted in alkaline soil, they are prone to iron deficiency and show symptoms of yellow leaves and albinism. If iron fertilizer is sprayed in time, it will turn green after a few days. According to the experiment, if 0.3%-0.5% ferrous sulfate solution is sprayed twice during flowering, the yield can be increased by more than 13%. Manganese sulfate solution: for every 1 ton of dry matter formed in peanuts, 39 grams of manganese is needed to be absorbed. When manganese fertilizer is applied to manganese-deficient soil, the yield is generally increased by 8% to 11%. Application method: from 30-50 days after sowing to 15-20 days before harvest, 0.1% manganese sulfate solution is sprayed every 10-14 days; if necessary, it can be mixed with fungicides to control peanut leaf spot.

Photosynthetic micro-fertilizer solution: photosynthetic micro-fertilizer contains not only a variety of trace elements, but also photorespiration inhibitors. When used on peanuts, it can not only meet its needs for trace elements, but also inhibit photorespiration, reduce consumption and promote satiety. The yield can be increased by more than 15%. In the peanut flowering needle period, spray twice, every 10 days or so, each time with 100 grams of photosynthetic micro-fertilizer per mu, diluted with 50 kg of water, choose to spray in cloudy or sunny afternoon when the sun is not too strong.

Rare earth micro-fertilizer solution: rare earth micro-fertilizer, also known as rare earth nitrate, is a new type of rare earth element fertilizer pioneered and popularized in China. Seed dressing or foliar spraying with rare earth micro-fertilizer can enhance plant vitality, promote photosynthesis and metabolic function, so as to achieve the purpose of increasing production, with an average increase of 9.5% and 14%. The aqueous solution of rare earth micro-fertilizer with a concentration of 0.08% can be sprayed twice from the initial flowering stage to the podding stage of peanut, with an interval of 15 days.