摘要
研究了凹凸棒石粘土(凹土)对土壤团粒结构和小麦生长的影响。结果表明:凹土能显著增加直径>0.25mm和0.25～0.5mm团聚体总数;凹土用量40～80gkg-1时提高小麦千粒重和淀粉含量,80gkg-1时千粒重最大,40gkg-1时淀粉含量最高;≥80gkg-1时降低出苗率、株高、叶面积、穗粒数和穗粒重;20～40gkg-1时影响不明显。
Effects of attapulgite clay were studied on soil aggregate and wheat growth.Results showed that attapulgite clay markedly increased aggregate numbers of the diameter above 0.25 mm and from 0.25 to 0.5mm.When the dose of attapulgite clay in soil was 40-80 g kg-1,thousand-grain weight and starch content were remarkably increased.When the dose was 80 g kg,thousand-grain weight achieved to the top while the dose was 40 g kg^-1 for starch content.When the dose was ≥80 g kg^-1,germination rate,stalk height,leaf area,numbers of grains per spike and grain weight were obviously decreased.No effects were found on these characteristics when the dose was 20-40 g kg^-1.
出处
《土壤通报》
CAS
CSCD
北大核心
2010年第1期142-144,共3页
Chinese Journal of Soil Science
基金
科技部国际科技合作项目(2004DFB00200)资助
关键词
土壤团粒结构
凹土
小麦
生长
Soil aggregate Attapulgite clay Wheat Growth
