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The breeding period of flue-cured tobacco is approaching. The management points of flue-cured tobacco seedlings and fertilizers are introduced as follows for reference by tobacco farmers.
First, fertilization is based on base fertilizer, and topdressing fertilizer as auxiliary fertilizer should meet the needs of the third true leaf stage of flue-cured tobacco, otherwise it can be regarded as insufficient base fertilizer. Topdressing should be applied as appropriate according to the growth status of flue-cured tobacco seedlings, and topdressing 1 to 3 times. If the base fertilizer is sufficient and there is no need to topdress, it is not necessary to chase; if it is necessary to topdress, the compound fertilizer is superior. Before the emergence of the third true leaf, the flue-cured tobacco seedlings are weak and sensitive to ammonia nitrogen. The topdressing must be cautious. The nitrogen fertilizer should be 5-10 grams per square meter, and the concentration of topdressing fertilizer should be controlled at 1% to 1.5%. , avoid excessive use.
Second, the water management is based on the principle of pouring water on the bottom of the foot. It has been proved by practice that the water at the bottom of the foot can be used to meet the water needs of the flue-cured tobacco seedlings in the early stage. If water shortage is found, it should be watered according to the growth and development rules of flue-cured tobacco seedlings and the characteristics of water demand. From sowing to emergence, keep the seedbed moist and soft, otherwise it will affect the seed germination. Generally, in the case of pouring water on the soles of the feet, it is not necessary to water the water. If watering is required, the water can be sprinkled in the morning or evening. In the cross-leaf stage, the roots of flue-cured tobacco seedlings are still underdeveloped, shallow in soil, and water shortage will affect the growth and development of seedlings. Depending on the condition of the seedbed, if watering is required, it is advisable to pour small water. In the vertical leaf stage, the water should be properly controlled to promote the root development of the flue-cured tobacco seedlings. The soil water content of the root active layer should be maintained at about 60% of the maximum water holding capacity in the field, and the surface of the bed soil should be in a state of not being dry and not wet. However, it is not advisable to lack water. If the topsoil of the seedbed does not return to the tide in the morning, it is necessary to water the water to make it suitable for the bottom. The seedling stage is usually based on the water-breaking seedlings, and is managed in accordance with the principle of no drought or no pouring, so as to exercise the seedlings in advance. If the leaves of flue-cured tobacco seedlings are wilting at noon on sunny days, they cannot be restored in the morning or evening, and should be watered in moderation. During the breeding process of flue-cured tobacco, no water can be accumulated in the seedbed at any time.
Author: Caoyu Pei
Source: Henan Science and Technology News
First, fertilization is based on base fertilizer, and topdressing fertilizer as auxiliary fertilizer should meet the needs of the third true leaf stage of flue-cured tobacco, otherwise it can be regarded as insufficient base fertilizer. Topdressing should be applied as appropriate according to the growth status of flue-cured tobacco seedlings, and topdressing 1 to 3 times. If the base fertilizer is sufficient and there is no need to topdress, it is not necessary to chase; if it is necessary to topdress, the compound fertilizer is superior. Before the emergence of the third true leaf, the flue-cured tobacco seedlings are weak and sensitive to ammonia nitrogen. The topdressing must be cautious. The nitrogen fertilizer should be 5-10 grams per square meter, and the concentration of topdressing fertilizer should be controlled at 1% to 1.5%. , avoid excessive use.
Second, the water management is based on the principle of pouring water on the bottom of the foot. It has been proved by practice that the water at the bottom of the foot can be used to meet the water needs of the flue-cured tobacco seedlings in the early stage. If water shortage is found, it should be watered according to the growth and development rules of flue-cured tobacco seedlings and the characteristics of water demand. From sowing to emergence, keep the seedbed moist and soft, otherwise it will affect the seed germination. Generally, in the case of pouring water on the soles of the feet, it is not necessary to water the water. If watering is required, the water can be sprinkled in the morning or evening. In the cross-leaf stage, the roots of flue-cured tobacco seedlings are still underdeveloped, shallow in soil, and water shortage will affect the growth and development of seedlings. Depending on the condition of the seedbed, if watering is required, it is advisable to pour small water. In the vertical leaf stage, the water should be properly controlled to promote the root development of the flue-cured tobacco seedlings. The soil water content of the root active layer should be maintained at about 60% of the maximum water holding capacity in the field, and the surface of the bed soil should be in a state of not being dry and not wet. However, it is not advisable to lack water. If the topsoil of the seedbed does not return to the tide in the morning, it is necessary to water the water to make it suitable for the bottom. The seedling stage is usually based on the water-breaking seedlings, and is managed in accordance with the principle of no drought or no pouring, so as to exercise the seedlings in advance. If the leaves of flue-cured tobacco seedlings are wilting at noon on sunny days, they cannot be restored in the morning or evening, and should be watered in moderation. During the breeding process of flue-cured tobacco, no water can be accumulated in the seedbed at any time.
Author: Caoyu Pei
Source: Henan Science and Technology News
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