Sesame grows most rapidly in the flowering and crusting stage. At this time, vegetative growth and growth and growth go hand in hand, and the absorbed nutrients account for 7 or 80% of the whole growth period. Because the nitrogen fertilizer at the bottom is too easy to make the seedlings grow and form high seedlings, only a part of nitrogen fertilizer is generally used as the base fertilizer. In order to meet the needs of plant growth and development in the middle and late stages, the sesame flowering period is vigorously grown, accumulating more photosynthetic products, increasing the number of flower buds, and stabilizing and not premature aging in the later stage, so that the grain is full and full, and topdressing must be carried out. Sesame topdressing must master the period and method of topdressing.
Regarding the period of topdressing, the masses have the idea of ​​seeing the seedlings fertilizing and catching the flowers and fertilizers. In the case of very poor seedlings or large differences in seedling size, a small amount of seedling fertilizer or partial application may be applied first to dilute the mature manure or urea. When the sesame seedlings are large, it is the flower bud differentiation period. At this time, the topdressing effect is the best. Topdressing is mainly based on nitrogen fertilizer, supplemented by phosphorus and potassium fertilizer. When sesame enters the flowering stage, the lateral roots have begun to form in large quantities, the absorption capacity of the root system is enhanced, the growth rate of the plant is accelerated, and the demand for nutrients is also significantly increased. It is necessary to reapply the flower fertilizer in a timely manner, which is convenient for chemical fertilizers, and can also be applied with decomposed cake fertilizer and manure. , manure and so on. During the sowing, the ditch shall be applied or applied in the middle of the row, and applied to the soil layer of about 10 cm to absorb the roots, cover the soil after application, and remove the weeds in the field. In the case of spreading, in addition to the decomposed cake fertilizer or granular urea can be mixed with soil, and then cultivating the soil to cover the soil, other kinds of chemical fertilizers should be applied at acupoints, avoiding application, such as ammonium sulfate as powder, nitric acid Ammonium is easy to deliquesce, and it is easy to adhere to the sesame leaf hair, causing burning seedlings. When the weather is dry, the water can be fully applied after the application.
From: China Crop Network
Regarding the period of topdressing, the masses have the idea of ​​seeing the seedlings fertilizing and catching the flowers and fertilizers. In the case of very poor seedlings or large differences in seedling size, a small amount of seedling fertilizer or partial application may be applied first to dilute the mature manure or urea. When the sesame seedlings are large, it is the flower bud differentiation period. At this time, the topdressing effect is the best. Topdressing is mainly based on nitrogen fertilizer, supplemented by phosphorus and potassium fertilizer. When sesame enters the flowering stage, the lateral roots have begun to form in large quantities, the absorption capacity of the root system is enhanced, the growth rate of the plant is accelerated, and the demand for nutrients is also significantly increased. It is necessary to reapply the flower fertilizer in a timely manner, which is convenient for chemical fertilizers, and can also be applied with decomposed cake fertilizer and manure. , manure and so on. During the sowing, the ditch shall be applied or applied in the middle of the row, and applied to the soil layer of about 10 cm to absorb the roots, cover the soil after application, and remove the weeds in the field. In the case of spreading, in addition to the decomposed cake fertilizer or granular urea can be mixed with soil, and then cultivating the soil to cover the soil, other kinds of chemical fertilizers should be applied at acupoints, avoiding application, such as ammonium sulfate as powder, nitric acid Ammonium is easy to deliquesce, and it is easy to adhere to the sesame leaf hair, causing burning seedlings. When the weather is dry, the water can be fully applied after the application.
From: China Crop Network
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