期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Oxygation Enhances Growth,Gas Exchange and Salt Tolerance of Vegetable Soybean and Cotton in a Saline Vertisol 被引量:22
1
作者 surya p. bhattarai David J. Midmore 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2009年第7期675-688,共14页
Impacts of salinity become severe when the soil is deficient in oxygen. OxygaUon (using aerated water for subsurface drip irrigation of crop) could minimize the impact of salinity on plants under oxygen-limiting soi... Impacts of salinity become severe when the soil is deficient in oxygen. OxygaUon (using aerated water for subsurface drip irrigation of crop) could minimize the impact of salinity on plants under oxygen-limiting soil environments. Pot experiments were conducted to evaluate the effects of oxygation (12% air volume/volume of water) on vegetable soybean (moderately salt tolerant) and cotton (salt tolerant) in a salinized vertisol at 2, 8, 14, 20 dS/m ECe. In vegetable soybean, oxygation increased above ground biomass yield and water use efficiency (WUE) by 13% and 22%, respectively, compared with the control. Higher yield with oxygation was accompanied by greater plant height and stem diameter and reduced specific leaf area and leaf Na^+ and CI^- concentrations. In cotton, oxygation increased lint yield and WUE by 18% and 16%, respectively, compared with the control, and was accompanied by greater canopy light interception, plant height and stem diameter. Oxygation also led to a greater rate of photosynthesis, higher relative water content in the leaf, reduced crop water stress index and lower leaf water potential. It did not, however, affect leaf Na^+ or CI^- concentration. Oxygation invariably increased, whereas salinity reduced the K^+: Na^+ ratio in the leaves of both species. Oxygation improved yield and WUE performance of salt tolerant and moderately tolerant crops under saline soil environments, and this may have a significant impact for irrigated agriculture where saline soils pose constraints to crop production. 展开更多
关键词 COTTON IRRIGATION light interception oxygation saline soil salt exclusion stem diameter vegetable soybean
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部