Mr. Li from Xiaogan City, Hubei Province asked: What is “water with nitrogen� what is the benefit?
A: “With water and nitrogen†is an advanced rice topdressing method. It is to spread the fertilizer in the field in the case of no water in the field, and then slowly irrigate the fertilizer to dissolve and infiltrate the rice root layer. method. As the water layer dries, the fertilizer slowly infiltrates into the root layer with the small water. Compared with the traditional water layer fertilization method, not only the fertilization utilization rate is significantly improved, but also the root system can be promoted, which is also beneficial for preventing lodging and cultivating strong seedlings. .
Ms. Yang from Changsha City, Hunan Province: What can we do with double-season rice topdressing?
A: We must grasp two points: First, pay attention to irrigation and fertilization methods. After the rice seedlings return to green, the water level is lowered by measures such as trenching, and the surface water is naturally dried. When there is no water on the surface and crusts or cracks appear on the surface of the soil, the required nitrogen fertilizer or special fertilizer is applied to the surface in a quantity, and then water is poured. When filling the water, you should master the "small water trickle", or let the water immerse into the field from the ditch, and never wash it with big water. The second is to pay attention to the ratio of base fertilizer, dosage and fertilization period. To reduce the proportion of Nitrogen, change group, tillering traditional ratio is too large. Wherein the ratio of early rice based recovery substantially 1:1 Nitrogen, the proportion of the crop rice dressing may then higher; the amount of fertilizer nitrogen fertilization compared with the aqueous layer, can be reduced by about 20%, usually after transplanting of dressing 10 to 15 days to complete.
Mr. Hou from Haicheng, Liaoning Province: Can you use the method of fertilizing water with nitrogen?
A: "In a nitrogen hose" substantially suitable for a variety paddy fertilization, in particular irrigation water easily controlled irrigation rice, but need to be unsuitable salts Paddy Soil pressure.
Mr. Gu of Fangzheng County, Heilongjiang Province asked: Can you throw glutinous rice and topdressing with water?
A: Rice throwing shallow root system, the need for more dressing method "with water to nitrogen", to promote root growth.
Ms. Peng from Wuzhong City, Ningxia, asked: As long as the special fertilizer is genuine, what kind of special fertilizer is applied to the crop?
A: It is not enough to have these, but also depends on the specific ratio of fertilizers. If the nitrogen content of the fertilizer is high, and the nitrogen fertilizer is applied after the base fertilizer, the nitrogen will be applied excessively, causing the plant to grow long or greedy and mature, not only the crop is reduced, the fertilizer is wasted, and the environment is polluted; if the nitrogen content is reduced, the light is reduced. Shiji fertilizer, no longer topdressing, and may be fattened later. It should also be noted that different special fertilizers have different characteristics, and should be done according to the requirements of the manufacturer's product specification.
Ms. Tang of Baoding City, Hebei Province asked: Several vegetable greenhouses are planted with tomato, 100 kg of organic-inorganic compound fertilizer is used as the base fertilizer per acre. Why do some greenhouses grow very well after transplanting, and some have always been yellow? ?
Answer: The content of chemical fertilizer in organic-inorganic compound fertilizer is low, and it is still a kind of organic fertilizer, so the fertilizer efficiency is slow. Only organic-inorganic compound fertilizer is used as the base fertilizer. In greenhouses with high fertility, the effect on transplanting seedlings is not great, but in greenhouses with low fertility, transplanted seedlings will yellow due to insufficient nitrogen supply. Therefore, when applying organic-inorganic compound fertilizer as the base fertilizer, an appropriate amount of quick-acting fertilizer should be applied.
Mr. Shao from Jilin Liaoyuan City asked: Can corn grow to 8-9 pieces of leaves to see if it can be topdressed?
A: 8 to 9 pieces of visible leaves when corn has just started jointing, topdressing is a bit early, unless the soil is thin and weak, generally should be in the big bell period, that is, in 12 to 14 pieces of visible leaves when topdressing, or jointing stage, big horn Intermittent application.
(Senior Consultant of Sinofert, Professor of China Agricultural University Wang Xingren)
Farmers Daily
A: “With water and nitrogen†is an advanced rice topdressing method. It is to spread the fertilizer in the field in the case of no water in the field, and then slowly irrigate the fertilizer to dissolve and infiltrate the rice root layer. method. As the water layer dries, the fertilizer slowly infiltrates into the root layer with the small water. Compared with the traditional water layer fertilization method, not only the fertilization utilization rate is significantly improved, but also the root system can be promoted, which is also beneficial for preventing lodging and cultivating strong seedlings. .
Ms. Yang from Changsha City, Hunan Province: What can we do with double-season rice topdressing?
A: We must grasp two points: First, pay attention to irrigation and fertilization methods. After the rice seedlings return to green, the water level is lowered by measures such as trenching, and the surface water is naturally dried. When there is no water on the surface and crusts or cracks appear on the surface of the soil, the required nitrogen fertilizer or special fertilizer is applied to the surface in a quantity, and then water is poured. When filling the water, you should master the "small water trickle", or let the water immerse into the field from the ditch, and never wash it with big water. The second is to pay attention to the ratio of base fertilizer, dosage and fertilization period. To reduce the proportion of Nitrogen, change group, tillering traditional ratio is too large. Wherein the ratio of early rice based recovery substantially 1:1 Nitrogen, the proportion of the crop rice dressing may then higher; the amount of fertilizer nitrogen fertilization compared with the aqueous layer, can be reduced by about 20%, usually after transplanting of dressing 10 to 15 days to complete.
Mr. Hou from Haicheng, Liaoning Province: Can you use the method of fertilizing water with nitrogen?
A: "In a nitrogen hose" substantially suitable for a variety paddy fertilization, in particular irrigation water easily controlled irrigation rice, but need to be unsuitable salts Paddy Soil pressure.
Mr. Gu of Fangzheng County, Heilongjiang Province asked: Can you throw glutinous rice and topdressing with water?
A: Rice throwing shallow root system, the need for more dressing method "with water to nitrogen", to promote root growth.
Ms. Peng from Wuzhong City, Ningxia, asked: As long as the special fertilizer is genuine, what kind of special fertilizer is applied to the crop?
A: It is not enough to have these, but also depends on the specific ratio of fertilizers. If the nitrogen content of the fertilizer is high, and the nitrogen fertilizer is applied after the base fertilizer, the nitrogen will be applied excessively, causing the plant to grow long or greedy and mature, not only the crop is reduced, the fertilizer is wasted, and the environment is polluted; if the nitrogen content is reduced, the light is reduced. Shiji fertilizer, no longer topdressing, and may be fattened later. It should also be noted that different special fertilizers have different characteristics, and should be done according to the requirements of the manufacturer's product specification.
Ms. Tang of Baoding City, Hebei Province asked: Several vegetable greenhouses are planted with tomato, 100 kg of organic-inorganic compound fertilizer is used as the base fertilizer per acre. Why do some greenhouses grow very well after transplanting, and some have always been yellow? ?
Answer: The content of chemical fertilizer in organic-inorganic compound fertilizer is low, and it is still a kind of organic fertilizer, so the fertilizer efficiency is slow. Only organic-inorganic compound fertilizer is used as the base fertilizer. In greenhouses with high fertility, the effect on transplanting seedlings is not great, but in greenhouses with low fertility, transplanted seedlings will yellow due to insufficient nitrogen supply. Therefore, when applying organic-inorganic compound fertilizer as the base fertilizer, an appropriate amount of quick-acting fertilizer should be applied.
Mr. Shao from Jilin Liaoyuan City asked: Can corn grow to 8-9 pieces of leaves to see if it can be topdressed?
A: 8 to 9 pieces of visible leaves when corn has just started jointing, topdressing is a bit early, unless the soil is thin and weak, generally should be in the big bell period, that is, in 12 to 14 pieces of visible leaves when topdressing, or jointing stage, big horn Intermittent application.
(Senior Consultant of Sinofert, Professor of China Agricultural University Wang Xingren)
Farmers Daily
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