Effects of fertilizer on the seedling emergence of vegetable crops
Effects of fertilizer on the seedling emergence of vegetable crops
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肥料对蔬菜作物出苗的影响
DOI：
10.1002/jsfa.2740271014
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发表时间：
1976
影响因子：
4.1
通讯作者：
T. W. Hegarty
中科院分区：
文献类型：
--
作者：
T. W. Hegarty
在一项田间试验中，在苗床上施用0、100和200单位/英亩的肥料，只有氮肥导致出苗减少，尽管氮肥、磷肥和钾肥确实导致作物出苗延迟（卡拉布雷斯、胡萝卜、洋葱和红甜菜）。在一个盆栽试验中，研究了相当于0、125、250、375和500公斤/公顷的氮在土壤中100毫微米深处的影响，高施肥水平和低土壤水分导致出苗减少。胡萝卜对水分胁迫最敏感，卡拉布雷斯最不敏感。胡萝卜和洋葱的出苗率与水势呈线性关系。在蔬菜种植中，如果认为幼苗建立的绝对水平和作物建立的均匀性很重要，建议从播种苗床肥料敷料中省略无机氮肥。
In a field experiment on fertilizers applied at 0, 100 and 200 units/acre to the seedbed only nitrogen fertilizer caused a reduction in seedling emergence, though nitrogen, phosphate and potassium fertilizers did cause delays in crop emergence (calabrese, carrot, onion and red beet). In a pot experiment investigating the effects of the equivalent of 0, 125, 250, 375 and 500 kg/ha of nitrogen incorporated to a depth of 100 nm in soil, high fertilizer levels and low soil moisture resulted in reduced seedling emergence. Carrot was most sensitive and calabrese least sensitive to moisture stress. The rate of seedling emergence in carrot and onion was linearly related to water potential. Where absolute levels of seedling establishment and uniformity of crop establishment are considered to be important in vegetable growing it is recommended that inorganic nitrogen fertilizer be omitted from broadcast seedbed fertilizer dressings.