一品红矿质元素缺素症状研究

通过砂培试验，研究一品红分别在缺氮、磷、钾、钙、镁、硫、铁七种元素的情况下所表现出的症状，并采集其外部形态指标及相关生理指标。结果表明，一品红在七种缺素条件下明显表现出七种不同的缺素症状，其形态指标及生理指标均明显低于对照，各种缺素症状出现在不同的生长时期。为研究其需肥特点及快速营养诊断提供参考和依据。

Study on Symptoms of Culture in Lack of Nutritional Elements for Euphorbia pulcherrima wild

This paper studied the symptoms of Euphorbia pulcherrima wild when it separately lacked nutritional elerent N, P, K, Ca, Mg, S and Fe by the sand culture. The morphological index and interrelated physiological index were collected when the symptoms appeared. The result indicated that Euphorbia pulcherrima wild can have seven different symptoms obviously when it lacked the corresponding element,the morphological index and interrelated physiological index obviously were lower than CK, and the different symptom was in differen period. These results can provide reference for its study on fertilizing characteristic and rapid diagnosis of nutrition.