According to the requirements of corn leaf age model management, the life of corn should be mastered at the appropriate time to do the application of topdressing fertilizers such as weaning fertilizer, marrying fertilizer, seedling fertilizer, panicle fertilizer and strong seed fertilizer.
1. Before and after the corn seedling stage and transplanting, pay attention to the topdressing of weaning fertilizer and marrying fertilizer. At the three-leaf stage of maize, the nutrients stored in the endosperm of the seed are depleted. At this time, the root system of the plant is still underdeveloped, and the ability to absorb nutrients in the soil is weak. It can be applied to the water with about 2.5 kg of urea per 667 square meters (1 mu). A "weaning fertilizer". Corn that is transplanted with nutrient ball seedlings must be chased once before transplanting (two leaves and one heart to three leaves and one heart).
2. When the corn grows to 5-6 leaves, according to the field growth and soil fertility status, the corn with weak seedlings should be used with 5-10 kg of urea per 667 square meters, combined with shallow cultivating and grounding. Miao Fei." At this time, the soil can also be intercepted to cut off the soil capillary to protect the sputum, especially for drought-stricken areas.
3. When the corn reaches 10 leaves, it should be applied once to “spear fertilizer†to promote long spikes and create conditions for the formation of large ears. The absorption of topdressing by corn plants often lags behind for a few days. The fertilizer that has just been applied cannot immediately act. When this fertilizer is used at this time, it can provide nutrition for the growth and development of the three-leaf of the ear. The ear lobe is a functional leaf that directly affects the size and yield of the ear of corn. This top dressing is a key and should be applied and applied. Generally, 667 square meters of urea is used for 15 to 20 kilograms.
4, corn tasseling period, in order to ensure that the grain is full, it should also be applied once a "strong seed fertilizer", generally 667 square meters with urea 5 ~ 7.5 kg. At this time, it can be supplemented with interlaced emasculation, remove the weak strains of the diseased plants and remove the diseased yellow foot leaves, etc., to improve the ventilation and light transmission in the corn field, to reduce pests and diseases and increase production. Interlacing the tassel (small), not only can reduce the nutrient consumption, so that the corn can increase production, the tassel can also be used as an excellent feed additive, used to feed pigs can increase fat and promote long hair. It is generally advisable for the emasculation of the corn to be taken out when the tassels begin to show their heads, and the top stalks are held in one hand.
1. Before and after the corn seedling stage and transplanting, pay attention to the topdressing of weaning fertilizer and marrying fertilizer. At the three-leaf stage of maize, the nutrients stored in the endosperm of the seed are depleted. At this time, the root system of the plant is still underdeveloped, and the ability to absorb nutrients in the soil is weak. It can be applied to the water with about 2.5 kg of urea per 667 square meters (1 mu). A "weaning fertilizer". Corn that is transplanted with nutrient ball seedlings must be chased once before transplanting (two leaves and one heart to three leaves and one heart).
2. When the corn grows to 5-6 leaves, according to the field growth and soil fertility status, the corn with weak seedlings should be used with 5-10 kg of urea per 667 square meters, combined with shallow cultivating and grounding. Miao Fei." At this time, the soil can also be intercepted to cut off the soil capillary to protect the sputum, especially for drought-stricken areas.
3. When the corn reaches 10 leaves, it should be applied once to “spear fertilizer†to promote long spikes and create conditions for the formation of large ears. The absorption of topdressing by corn plants often lags behind for a few days. The fertilizer that has just been applied cannot immediately act. When this fertilizer is used at this time, it can provide nutrition for the growth and development of the three-leaf of the ear. The ear lobe is a functional leaf that directly affects the size and yield of the ear of corn. This top dressing is a key and should be applied and applied. Generally, 667 square meters of urea is used for 15 to 20 kilograms.
4, corn tasseling period, in order to ensure that the grain is full, it should also be applied once a "strong seed fertilizer", generally 667 square meters with urea 5 ~ 7.5 kg. At this time, it can be supplemented with interlaced emasculation, remove the weak strains of the diseased plants and remove the diseased yellow foot leaves, etc., to improve the ventilation and light transmission in the corn field, to reduce pests and diseases and increase production. Interlacing the tassel (small), not only can reduce the nutrient consumption, so that the corn can increase production, the tassel can also be used as an excellent feed additive, used to feed pigs can increase fat and promote long hair. It is generally advisable for the emasculation of the corn to be taken out when the tassels begin to show their heads, and the top stalks are held in one hand.
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