摘要
用水培法进行桉树苗期缺素培养试验。结果表明:桉树苗期对N、P、K三要素的反应敏感,培养25d就出现明显的缺素症状,35d时,干物重分别为全素溶液培养的30％～33％,27％～42％,40％～43％。缺铁、缺钙及缺少微量元素的苗木也出现不同的症状,缺硫的苗木,至35d尚未出现明显缺素症状。
The solution culture with nutrient deficiency was used for Eucalyptus seedlings in this experiment. The results are shown as follow:a) Eucalyptus seedlings are sensitive to the deficiency of N, or P, or K. Typical symptom can be shown in 25 days. After 35 experimental days, the dry-weights of the seedlings which are deficient in N, or P, or K are 30 ~ 33,27~42,and 40~43 percent of that in the full nutrient solution, respectively.b) The seedlings deficient in Ca, or Fe, or Trace elements (B, Mn, Cu, Zn, Mo) also have themself's symptom. But no symptom was found for the seedlings deficient in s during the period experiment. It is noticeable that Eucalyptus seedlings are sensitive to Mg deficiency, and [the symptom of Mg deficiency is typical. It happens very scarcely in solution culture with nutrient deficiency.
出处
《林业科学研究》
CSCD
北大核心
1992年第6期646-651,共6页
Forest Research
基金
林业部"海南岛热带主要造林树种速生丰产栽培技术研究"的内容之一
关键词
桉树
苗期
营养缺乏症
Eucalyptus Seedling solution culture nutrient deficiencg symptom
