不同割制对橡胶树胶乳矿质养分流失的影响
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

Q142,Q948

基金项目:


Loss of mineral elements due to latex export under five tapping systems
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    为了研究不同割胶制度对胶乳矿质养分流失的影响,以成龄橡胶无性系PR107为研究材料,在1a的不同月份研究了5种割胶制度下干胶中矿质养分N、P、K、Ca、Mg的流失情况,分析了外界因素(如割胶频率、乙烯利刺激强度、月平均温、月降雨量等)对橡胶树胶乳养分流失量的影响情况,并建立了胶乳养分流失量与外界因素的直线回归方程,结果表明:(1)不论是传统割胶还是乙烯利刺激割胶,PR107胶乳中矿质养分的流失量大小顺序为:N>K>P>Mg>Ca;(2)与传统割胶相比,4种乙烯利刺激割制对PR107胶乳中矿质养分的流失量具有极显著的影响(P<0.01),加速了橡胶树养分的流失,其中N素增加了1.01~1.26倍,P素增加了1.19~1.53,K 素增加了1.26~1.58倍,Ca素增加了0.69~1.14倍,Mg素增加了1.02~1.51倍。在一定范围内,随着刺激强度或割胶频率的增加,每刀流失的养分数量呈下降趋势,但胶乳养分流失的总量却增加。(3)胶乳养分流失量与外界因素的直线回归方程达显著水平,在一定程度上可用于预测胶乳养分的流失量。

    Abstract:

    The loss of mineral elements due to latex export can be a major threat to sustainable management of cultivated ecosystems. In this study, we monitored the loss of mineral elements in the latex of rubber of rubber trees (clone PR107, 28 years old) monthly for a period of one year under five tapping systems (S/2↓d/2 (ck),S/2↓ d/3+ET2.0 %,S/2↓d/4+ET2.5%,S/2↓d/5+ET3.0%,S/2↓d/6+ET3.5 %). We obtained three main results: (1) Whatever the intensity of the tapping system, the concentration of mineral elements in the latex was: N>K>P>Mg>Ca; this constant ranking was attributed to the specific characteristics of each mineral element and also to their physiological functions in rubber trees. (2) With increased ethylene stimulation or tapping frequency the concentration of nutrients trended to decrease, while the amount of latex increased. We also observed that losses of mineral elements increased with an increase in the intensity of tapping (frequency or stimulation). (3) The monthly fluctuation in latex production and mineral elements exported were linked with environmental factors (mainly monthly average temperature and precipitation) and agricultural soil management (chemical fertilization).

    参考文献
    相似文献
    引证文献
引用本文

曹建华,蒋菊生,杨怀,林位夫,陈俊明.不同割制对橡胶树胶乳矿质养分流失的影响.生态学报,2008,28(6):2563~2563~2570

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数: