摘要
本试验研究了紫色土pH 对枳砧、红桔砧和香橙砧伏令夏橙春梢叶片矿质元素含量的影响。结果表明,枳砧吸收K,Mg,Mn,Cu,B,Al 等矿质元素高于红桔砧和香橙砧,尤以Cu,B 最多。但在吸收Ca、Na,Fe 等矿质元素时,则显著低于后两种砧木。N,P,S,Zn 等无差异。香橙砧吸收Ca,Na 高于红桔砧,其余无差异。叶片矿质元素与土壤pH 呈回归关系的有:N(幂函数),Ca(直线),S(幂函数),Na(抛物线),Fe(幂函数),Mn(抛物线),Ca(反抛物线),B(抛物线),Zn(反抛物线),Al(反抛物线)。无线性关系的有P、K,Mg。试验植株除Fe 外,未见其他缺素或中毒症状。但与通用的营养诊断标准比较,含Na 过量,含Cu,Mg 太低。
The effects of soil pH in the range of 4.0—7.9 on the mineral nutrientabsorption of Valencia orange(Citrus sinensis)on three rootstocks werestudied.The results indicated that the contents of K,Mg,Mn,Cu,BandAl,Cu and B in particular,were higher in the leaves on spring flushesof the trees on trifoliata(Poncirus trifoliata)rootstock than those onHongju(C.tangerina)or Xiangchen(C.jonus)rootstocks.In contrast,theuptake of Ca,Na and Fe was stronger in trees on Hongiu or Xiangchenrootstocks.All three rootstocks were similar in the contents of N,P,S andZn.The absorbing levels of Ca and Na on Xiangchen rootsock were higherthan thoes on Hongju rootstock,and the levels of other elements weresimilar.The contents of N,Ca,S,Na,Fe,Mn,Cu,B,Zn and Al in theleaves exhibited various regressive relationships with soil pH,but P,Kand Mg did not.The trees examined showed iron deficiency symptoms,but no other deficiency or toxicity symptoms were observed.Compared withthe usually-adopted diagiostic criteria for fruit tree nutrition,Na appearedin excess while Cu and Mg were deficient in the leaves.
出处
《西南农业大学学报（自然科学版）》
CSCD
1991年第1期66-71,共6页
Journal of Southwest Agricultural University
关键词
夏橙
矿质营养
紫色土
PH值
砧木
citrus
rootstock
nutrition(biology)
soil reaction
