Waxy corn is a kind of crop that needs more fertilizer. Its nutrient absorption in the whole life is mostly nitrogen fertilizer, followed by potassium and phosphorus. Generally, for every 100kg of waxy corn grain produced, about 2.55kg of nitrogen, about 0.98kg of phosphorus, and 2.49kg of potassium need to be absorbed. The production can be used as the basis for the planned production quota and the amount of fertilizer needed, adjusted according to local production conditions, and formulated fertilization plans.
Scientific fertilization is an important step in seizing the high yield and quality of waxy corn ear. According to the law of fertilizer demand of waxy corn and the production practices of Nanhui, Fengxian, and Qingpu districts in Shanghai suburbs, the following principles should be applied to the fertilization of waxy corn (mainly based on spring seeding and transplanting methods): Basal fertilizer is the main ingredient, supplemented by top dressing; organic Mainly fertilizer, supplemented by chemical fertilizer; sufficient base fertilizer, top dressing in phases.
1. Basal fertilizer refers to the fertilizer applied before transplanting. The dosage per mu is 1500kg of decomposed organic fertilizer (chicken manure, pig manure, etc.). Organic fertilizers should be applied as early as possible as basic fertilizers, and they should generally be applied in deep plowing in winter tillage. On the basis of applying organic fertilizer, one week before transplanting, apply about 60 kg of compound fertilizer per acre (35-40% of the total amount of fertilizer).
2, top dressing top-dressing fertilizer and panicle fertilizer. Jointing fertilizer: When spring corn grows in leaves of 7-8 leaves, it will enter the jointing stage. At this time, tassels and ears will also be differentiated, and the requirements for nutrient will be increasingly increased. Therefore, timely application of joint-fertilizer will promote waxy corn. The vegetative growth of the plant is very important. In general, joint-fertilizer accounts for about 15-20% of the total amount of chemical fertilizer. At this time, about 20kg of ammonium bicarbonate can be applied per acre.
3. Panicle fertilizer: The application period of panicle fertilizer is generally the most suitable for the topdressing of leaves when the leaf is 13 leaves old. The amount of panicle fertilizer accounts for about 35% of the total amount of fertilizer, and it is better to use available nitrogen fertilizer, which can be used in combination with cultivator. Generally apply 15-17kg of urea per acre.
Scientific fertilization is an important step in seizing the high yield and quality of waxy corn ear. According to the law of fertilizer demand of waxy corn and the production practices of Nanhui, Fengxian, and Qingpu districts in Shanghai suburbs, the following principles should be applied to the fertilization of waxy corn (mainly based on spring seeding and transplanting methods): Basal fertilizer is the main ingredient, supplemented by top dressing; organic Mainly fertilizer, supplemented by chemical fertilizer; sufficient base fertilizer, top dressing in phases.
1. Basal fertilizer refers to the fertilizer applied before transplanting. The dosage per mu is 1500kg of decomposed organic fertilizer (chicken manure, pig manure, etc.). Organic fertilizers should be applied as early as possible as basic fertilizers, and they should generally be applied in deep plowing in winter tillage. On the basis of applying organic fertilizer, one week before transplanting, apply about 60 kg of compound fertilizer per acre (35-40% of the total amount of fertilizer).
2, top dressing top-dressing fertilizer and panicle fertilizer. Jointing fertilizer: When spring corn grows in leaves of 7-8 leaves, it will enter the jointing stage. At this time, tassels and ears will also be differentiated, and the requirements for nutrient will be increasingly increased. Therefore, timely application of joint-fertilizer will promote waxy corn. The vegetative growth of the plant is very important. In general, joint-fertilizer accounts for about 15-20% of the total amount of chemical fertilizer. At this time, about 20kg of ammonium bicarbonate can be applied per acre.
3. Panicle fertilizer: The application period of panicle fertilizer is generally the most suitable for the topdressing of leaves when the leaf is 13 leaves old. The amount of panicle fertilizer accounts for about 35% of the total amount of fertilizer, and it is better to use available nitrogen fertilizer, which can be used in combination with cultivator. Generally apply 15-17kg of urea per acre.
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