摘要
我们对海南主栽芒果品种台农和金煌芒的叶片养分的变化动态进行了分析。结果表明,相同栽培模式下,芒果叶片养分含量在不同品种、不同生长发育阶段和不同物候期之间存在显著的差异,但总体规律为:Ca>N>K>Mg>P>Mn>Fe>Cu>Zn。营养生长期间,不同月份芒果叶片中N、P、K、Mg含量基本保持在同一水平上;生殖生长期间,养分从叶片转移至花芽中,叶片养分明显下降。对于大量元素N、P、K、Mg而言,8月份至12月份叶片养分波动较小。因此,10月份芒果的叶片可以作为叶片营养诊断的采样时间。
Monthly-dynamics of nutrient contents in the leaves of Tainong and Jinhuang Mango,the two varieties as the main cultivars in Hainan were analyzed.The results showed that in the same cultivation mode,there were significant differences in leaf nutrient contents in different mango varieties,in different development stages and in different phonological phases,given a general order of Ca>N>K>Mg>P>Mn>Fe>Cu>Zn.In vegetative stages,contents of N,P,K or Mg in leaves were at the same level in different months,while in reproductive stages,these nutrients were transferred from leaves to flower buds and obviously decreased in leaves.Since the contents of N,P,K and Mg changed to a lesser extent in leaves from August to December,therefor,October is suggested to be the optimal sampling time for nutrient diagnosis in mango leaves.
作者
张文
吉清妹
谢良商
符传良
刘国彪
潘顺秋
吴宇佳
张治礼
Zhang Wen;JI Qingmei;Xie Liangshang;Fu Chuanliang;Liu Guobiao;Pan Shunqiu;Wu Yujia;Zhang Zhili(Key Laboratory of Crop Genetics and Breeding,Hainan Academy of Agricultural Sciences Haikou Hainan 571100)
基金
鸣谢:作者感谢海南省质高产稳产技术集成与示范项目财预[2010]139号与国际植物营养研究所(IPNI)基金(Hainan200801)资金资助。
