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Sesame fertilization period Sesame fertilization program

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Sesame fertilization period Sesame fertilization program

1. Sesame base fertilizer.

Due to the shallow distribution of sesame roots in the soil, when the base fertilizer is of good quality and low quantity, it is appropriate to apply shallowly and intensively. Combined with harrowing 15 to 20 tons of high quality organic fertilizer per hectare. Lime or grass ash applied to acidic soils will increase yield significantly. When the effective phosphorus of the soil is less than 10 mg/kg, phosphorus fertilizer (P2O5) should be applied as base fertilizer, 60 to 75 kg per hectare. Nitrogen fertilizer (N) calcium nitrate dosage is generally 75 to 90 kg per hectare.

2, sesame seed fertilizer.

Sesame seeds are small and contain few nutrients, the application of seed fertilizer can promote seedling growth. Under the conditions of low soil fertility level or no fertilizer, the role of seed fertilizer is greater. The seeds of sesame are small and do not tolerate high concentrations of fertilizer, so the amount of seed fertilizer should not be more, and should not be mixed with seeds, side application is safer. If not organic fertilizer for the base fertilizer, fine organic fertilizer and a small amount of nitrogen, phosphorus fertilizer mix, sowing strips for cover seed fertilizer, the amount of 1.5 to 3 tons of organic fertilizer per hectare, mixed with calcium superphosphate 75 kg, calcium nitrate 37.5 kg.

3, sesame fertilizer.

Sesame reproductive period is short, summer sesame and autumn sesame due to seasonal urgency is often too late to apply fertilizer, therefore, the chase application of nitrogen fertilizer can timely meet the large nutrient needs of sesame in the nutrient greater efficiency period. In the above conditions, the follow-up nitrogen fertilizer should be early to the bud stage, and in the conditions of the base fertilizer or seed fertilizer, it is better to apply the first flowering period, the amount of nitrogen is 75 kg per hectare.

4. Foliar fertilizer for sesame.

Sesame leaves are broad, stems and leaves are densely hairy, can better adhere to the fertilizer, and capsules are borne in the axils of the leaves, sprayed on the leaves of the fertilizer can be absorbed by the capsule in time for the formation of seeds. Therefore, it is better to spray a 0.4% solution of potassium dihydrogen phosphate during flowering. In the soil effective boron content of 0.4 mg / kg, the beginning of flowering spray 0.2% borax solution has yield increasing effect.

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