摘要
以冀麦 2 6为材料 ,在田间条件下研究了灌溉制度对小麦产量结构形成和产量物质来源的影响。结果表明 :单期灌溉的单位面积粒数 ,以拔节期灌水的最高 ,灌水时期向前或向后推移 ,其单位面积粒数均下降 ,呈现倒“∨”字型变化 ;粒重与此相反 ,以拔节期灌水的为最低 ,灌水时期向前或向后推移 ,粒重均增高 ,呈现“∨”字型变化。灌水对产量物质来源的影响表现为 :灌水次数多 ,总灌水量大的 ,产量物质来源对开花后的物质生产依赖性大 ;反之 ,灌水次数少 ,灌水量小 ,产量物质来源对开花前暂贮物质的依赖性则强。此外 ,本文还根据试验结果 。
The effects of irrigation on yield components and grain carbohydrate sources of the winter wheat cultivator “Jimai 26” were studied under field conditions. Irrigation at jointing stage led to the highest grain number per unit area and the lowest grain weight, while irrigation at earlier or later stages led to lower grain number per unit area and higher grain weight. As irrigation times and quotas increased, contribution of carbohydrates accumulated after the flowering stage to grain yield increased. As irrigation times and quotas decreased, contribution of carbohydrates produced before flowering increased. In addition, water saving strategies for winter wheat production were also discussed.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2001年第1期17-22,共6页
Journal of China Agricultural University
