2018年7月31日星期二

Maize is skilled in anti-lodging fertilization

Maize had less fertilizer absorption in seedling stage, fertilizer demand increased significantly in jointing stage, fertilizer demand peak in heading stage and heading stage, and nitrogen fertilizer sensitivity stage in big bell mouth stage.
Therefore, the basal fertilizer should be combined with the whole land, and apply 2500~3000 kg of ripe farmyard fertilizer per mu, or about 50 kg of commodity organic fertilizer, and 25~30 kg of high content nitrophosphatide compound fertilizer.Where the mechanization degree is high, the ditch should be deep applied.Zinc-deficient and magnesium-deficient soils were moderately fertilized with 0.5-1kg zinc and magnesium fertilizers.More nitrogen fertilizer should not be applied in seedling stage to prevent early growth.
In the later stage, insufficient nitrogen fertilizer may lead to premature aging and lodging.In the period of loudspeaker, about 10kg of urea should be applied to each mu or hole to promote full panicle grain.But in the pursuit of fertilizer, the root system and fertilizer should be misplaced to prevent the burning of seedlings.
In addition, chemical regulation should be carried out at an appropriate time.For high-growth, denser corn, use 40% hydroxylene between the big horn and the tasseling period, or when 1% corn pulls out smallpox.Ethylene hydrochloride, 20~ 30ml per mu, 15~20 liters of water spray;Or with 25% help CCC 20 ml water 50 ~ 60 litres of spraying, can reduce the ear of corn and plant height, reduce the empty stalk and spikelet, enhance lodging resistance;Also can be in male ear tassel before a week, every mu USES strong fengling 26 milligram, mix clear water 15 kilograms to spray shi, prevent fall down, empty stalk, premature aging, balding and greediness late maturity.

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