Generally, the available state of the major nutrient elements is larger than their critical value for plant with potential nutrient deficiency.
主要微量营养元素的有效态多大于其缺素临界值，但存在潜在缺素的可能性。
The contents of major nutrient elements were high, there was marked seasonal changes in the content of chlorophyll-a and different subside pool had great difference.
水中主要营养元素含量较高， 叶绿素含量随季节变化明显，且不同塌陷塘之间差别也较大。
Nitrogen (n) is one of the most essential mineral elements and the major limited nutrient for plants.
氮素是植物需求量最大的矿质营养元素，也是影响植物生长的主要营养元素。
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