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首页> 外文期刊>Indian Journal of Horticulture >Deficiency symptoms of primary nutrients in Ber (Zizyphus mauritiana Lamk)
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Deficiency symptoms of primary nutrients in Ber (Zizyphus mauritiana Lamk)

机译：Ber（Zizyphus mauritiana Lamk）的主要营养素缺乏症状

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摘要

The deficiency symptoms of primary nutrients in ber cv -Umran was studied under glass house conditions. The N deficiency appeared when leaf N concentration was 1.26% and led to stunted growth, reduction in size and slow growth of leaves. The P deficiency occurred at 0.09% P in leaf, and resulted in slower rate of leaf production without affecting their size, while the older leaves were thick, rough and dark green. The K deficiency occurs at 0.22% K in leaf, the symptoms were yellowing of leaves, tipburn, drying of leaf margin. There was a wide variation in nutrient concentration at which visual symptoms occurred at optimum nutrient concentration.
机译：在温室条件下研究了ber cv -Umran中主要营养素的缺乏症状。当叶片氮含量为1.26％时会出现氮缺乏，导致生长发育受阻，叶片尺寸减小和叶片生长缓慢。缺磷发生在叶片中的磷含量为0.09％时，导致叶片生产速度降低而不影响其大小，而较老的叶片则厚，粗糙和深绿色。缺钾发生在叶片上0.22％的钾，症状是叶片发黄，尖角燃烧，叶片边缘干燥。营养物浓度存在很大差异，在最佳营养物浓度下会出现视觉症状。

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