摘要
为给旱作春小麦高产栽培提供试验依据,分别对赤峰、呼盟两地区旱作春小麦叶面积指数和光合势发展动态及其影响因素进行了系统的研究。结果表明,不同地区,春小麦适宜的叶面积指数及光合势不同,但全生育期叶面积指数和光合势均呈单峰曲线变化,峰值出现时间因地区而异,且因不同密度、施肥量处理,叶面积指数和光合势存在明显的差异。生育后期叶面积指数和光合势与产量呈显著正相关,故保持孕穗期后较高的叶面积指数和光合势,才能获得较高的经济产量。
To provide basic data for high-yielding cultivation of spring wheat in dryland, the dynamics of LAI (leaf area index) and LAD (leaf photosynthetic potential) of spring wheat and the factors affecting them were studied in Humeng and Chifeng. The results showed that the proper LAI and LAD were different in two sites but LAI and LAD changed as a curve with a single peak in the life of wheat, and the peak time was different in two sites. LAI and LAD also were different among different density and fertilizer treatments. A significantly positive correlation existed between yield and LAI or LAD in spring wheat. In order to achieve more economic yield, it was important to keep higher LAD and LAI after booting stage.
出处
《麦类作物学报》
CAS
CSCD
2003年第4期66-70,共5页
Journal of Triticeae Crops
基金
内蒙古自治区科技厅"九五"重大科技攻关项目(960101)
