摘要
通过田间试验研究了木薯花生间作模式对生态系统稳定性的影响,并对土壤含水量和pH等进行关联分析。结果表明:①环境发生突变时,间作措施下化生三对环境变化抵抗力要优于纯作措施,体现出间作优势;突变结束后,纯作措施下花生的光合有效速率(Pn)恢复能力则更强,体现出纯作优势。②借助叶温模型的构建,创建间作优势度(intercroppingdominance,ID)这一概念,进而得出木薯花生间作模式的ID为+0.83%,说明术薯花生间作存有间作优势。③对生态环境的影响方面,木薯花生间作无疑提高了水分保持效能,但从一定程度上加剧了红壤的酸化。
A field experiment was conducted to investigate the effect of cassava-peanut intercropping on stability of the ecosystem,and also an association analysis was taken on soil moisture and pH value.The results showed that：（1） When total solar eclipse occurred,peanuts under intercropping measures showed a higher resistance to the environment than pure measures,reflecting the advantage of intercropping;When the total solar eclipse happened,the restoration of net photosynthetic efficiency（Pn） of peanut under pure measures increased,reflecting the net advantage.（2） With the model of leaf temperature,a concept named intercropping dominance（ID） was created.The ID of cassava-peanut intercropping derived ＋0.83%which verified that cassava-peanut intercropping really had advantages under normal weather conditions.（3）While improved the performance of water retention undoubtedly,cassava-peanut intercropping also exacerbated the red soil acidification.
出处
《土壤》
CAS
CSCD
北大核心
2012年第2期338-344,共7页
Soils
基金
国家863计划项目(2002AA2Z4331)资助
关键词
日全食
间作
叶温
模型
酸化
Total solar eclipse
Intercropping
Leaf temperature
Model
Acidification
