摘要
以半冬性小麦品种豫麦49-198为材料,采用大田试验的方法,研究了不同时期灌水及不同灌水量对冬小麦叶面积指数(LAI)、干物质积累、光合特性和产量的影响。结果表明,拔节前灌水量的增加有利于提高LAI;拔节后适宜田间持水量为65%,灌水过多反而对干物质积累不利,特别是对花后旗叶的光合特性及产量的形成产生不利影响。
Using semi-winter wheat Yumai 49-198 as experiment material,a field experiment was conducted to investigate the leaf area index,dry matter accumulation,photosynthetic characteristics and yield of winter wheat under different irrigation stages and amounts.The results showed that,before the jointing stage,the leaf area index increased with the increase of irrigation amount.After jointing stage,all the indexes were good when the field water capacity maintained at 65%,while too much irrigation amount was unfavourable to the dry matter accumulation,especially to the photosynthetic rate of flag leaf and yield formation after anthesis.
出处
《河南农业科学》
CSCD
北大核心
2010年第6期9-12,共4页
Journal of Henan Agricultural Sciences
基金
国家粮食丰产科技工程项目(2006BAD02A07-4)
关键词
半冬性小麦
叶面积指数
干物质积累
光合特性
产量
Semi-winter wheat
Leaf area index
Dry matter accumulation
Photosynthetic characteristics
Yield