Two major technical points for sesame dressing

According to the requirement of sesame, the principle of top dressing is: early application of Miaofei, re-applied before flowering, and supplementary treatment at flowering time. Top dressing should be dominated by nitrogen fertilizer, supplemented by phosphorus and potassium fertilizers.

First, seed dressing fertilizer: seedlings role is to promote root seedlings, generally after the fixed seedlings, urea with available nitrogen fertilizer 37.5 to 52.5 kg per hectare or 22500 to 30,000 kg of human and animal waste water topdressing. If the soil is fertile and the base fertilizer is sufficient, the seedlings will grow stronger and the seedlings will be less or not applied. If the soil is thin, the bottom fertilizer is poor, or the late summer sesame seedlings are sown, the seedlings will grow thin, and the top dressing will be applied earlier.

Second, flowering fertilizer: This top dressing can be applied once or twice depending on the situation. If the soil has good fertilizer and fertilizer supply, it can be applied once in the early flowering period; otherwise, it can be applied in the early flowering stage and the flowering and podging stage can be supplemented. The top dressing should not be delayed sooner than at the latest. Fertilizer application rate is generally 75 to 105 kg of urea per hectare and 30,000 to 37,500 kg of human and animal waste water, combined with cultivator or soil concentration or application. The potassium-depleted soil can also be used to apply about 750 kg of plant ash in the early flowering period, and the yield increase effect is also very good. In addition, the spraying of phosphorus and potassium fertilizers from the beginning of sesame to the flowering stage can increase the weight, increase the weight, and increase the oil content. Generally, it is sprayed with 0.25 to 1125 kg of foliar solution of 0.2% potassium dihydrogen phosphate per hectare, sprayed once every 5 to 7 days, and sprayed twice.