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一、玉米缺磷红苗症状 玉米缺磷红苗主要表现为:三叶期后生长速度明显迟缓,茎细叶狭,叶色暗绿,以后叶呈现紫红色,一般在四叶期出现,大部分紫红色可维持二十多天,待温度升高以后,也可恢复绿色,植株也加速生长,但很细弱,果穗小或空秆。红苗严重的也会造成死亡。 二、易发条件 1、土壤:土壤有效磷缺乏是玉米红苗的基本条件。新疆大部分土壤严重缺磷,特别是盐碱地、地下水位高的地,前茬是甜菜、瓜类、白菜需肥较多,下茬种玉米的地易发生红苗
First, corn phosphorus deficiency red seedling symptoms of phosphorus deficiency of red seedlings of maize mainly as follows: the growth rate was significantly slower after the trilobate, stems and leaves narrow, dark green leaves, after the leaves appear purple, usually in the four-leaf stage, large Some fuchsia can be maintained for more than 20 days, until the temperature rises, but also restore green, plants also accelerate the growth, but very weak, small ears or empty stalks. Severe red seedlings can also cause death. Second, the conditions prone to 1, soil: phosphorus deficiency is the basic conditions of corn seedlings. Most of Xinjiang’s soil is seriously deficient in phosphorus, especially in saline-alkali land and groundwater. Before the crop is beet, melons and cabbage are required more fertilizer.