为研究10年生枇杷植株中大量矿质营养元素累积与分布特性,以10年生‘大红袍,枇杷植株为试材,分别测定果实、叶、1～3年生枝、主枝、主干、侧根、须根的N、P、K、Ca、Mg和S的含量.结果表明:(1)N、K、Mg、S等元素在叶片中含量最高,分别为13.90、13.00、2.58和0.85 g·kg-1;P在1年生枝中含量最高为1.30g·kg-1;Ca在主干中含量最高为18.20 g·kg-1.(2)N、P、K、Mg及S在叶片中积累量最大,分别为42.86、3.39、40.08、7.94和2.62g;Ca在主干中积累量最大为77.61 g.(3)整株每kg鲜重生物量中大量元素累积量为12.70 g,其中叶片的最高,为22.90g;其次为主干,累积量为17.59 g;果实的积累量最少,为2.83 g.
Accumulation and distribution of macro mineral elements in the 10-year-old loquat tree
This study aimed to understand the accumulation and distribution of macro mineral nutrients in different organs of the 10-year-old ‘dahongpao' loquat tree.Samples were collected from the fruit,leaf,shoot,trunk,and root tissues.The content of N,P,K,Ca,Mg or S in these tissues were determined.Results were:(1) the contents of N,K,Mg and S were highest in leaves (N:13.90,K:13.00,Mg:2.58,and S:0.85 g·kg-1); the contents of P were highest in one-year-old branches (P:1.30 g·kg-1); and the content of Ca was highest in tree trunk (18.20 g·kg-1).(2) the amounts of accumulated N,P,K,Mg and S were highest in leaves with 42.86,3.39,40.08,7.94 and 2.62 g,respectively,whereas the amount accumulated Ca was highest in trunk with with 77.61 g.(3) the amount of accumulated major macro elements in the whole tree was 12.70 g·kg-1 fresh tissues weight.The highest amount was observed in leaves followed by trunks,and fruits with 22.90,17.59,and 2.83 g·kg-1 fresh tissue weight,respectively.
loquatmajor mineral elementaccumulation and distribution
国家科技期刊平台
NSTL
万方数据
维普
