摘要
砂培条件下对不同磷酸根和碳酸氢根浓度对樟树幼苗吸收铁的影响进行了研究。由樟树幼苗地上部和根部的鲜重、干重、含水量和含铁量及鲜基和干基的根冠比分析可知，樟树幼苗最适宜生长的磷酸根浓度为0．1mmol／L，适宜磷酸根浓度为0．1—1．0mmol／L；当磷酸根浓度大于1．0mmol／L，对樟树幼苗生长产生一定程度的抑制作用；当浓度达到10mmol／L，这种抑制作用已相当明显。当碳酸氢根浓度为10mmol／L，对樟树幼苗生长基本不受影响；当碳酸氢根浓度为20mmol／L，可产生一定程度的抑制作用；当浓度达到30mmol／L，这种抑制作用已相当明显。
Effect of different phosphate and bicarbonate concentrations on iron absorption in camphor tree seedlings was studied in sand culture experiment. Through analyzing fresh weight, dry weight, water content, iron content of shoot and root, dry root shoot ratio and fresh root shoot ratio of the camphor tree seedlings, it showed that optimal phosphate concentration for the growth of the camphor tree seedlings was 0.1 mmol/L, and its suitable phosphate concentrations ranged from 0.1 mmol/L to 1.0 mmol/L. When phosphate concentration was 1 mmol/L, the growth inhibition was observed, and when the phosphate concentration was 10 mmol/L, this inhibition was more significant compared with control. For the bicarbonate concentration, when it was 10 mmol/L, the growth was unaffected, the growth inhibition was observed when 20 mmol/L was applied and more significant inhibition was found when the concentration was 30 mmol/L.
出处
《浙江农业学报》
CSCD
北大核心
2009年第2期173-177,共5页
Acta Agriculturae Zhejiangensis
基金
HarvestPlus-China国际合作项目(I20060055)
杭州市下沙经济技术开发区科研项目(H20060653)
关键词
樟树
磷酸根
碳酸氢根
浓度
Camphor tree seedling
phosphorus
sodium bicarbonate
concentration
