摘要
大田条件下,通过比较花生超高产田(产量≥8.5 t/hm2)和一般高产田(产量≥6.0 t/hm2)群体特征和光能利用率得:叶面积系数峰值持续时间长是超高产花生的一个显著特点;超高产田全生育期光合势明显高于一般高产田;产量形成期光合势占全生育期的80％以上,对产量的形成至关重要;超高产田单位叶面积光截获效率低于一般高产田:超高产田的干物质生产速率全生育期始终高于一般高产田,干物质生产速率峰值高,后期下降速度慢,是超高产群体的显著特征;花生光能利用还有很大的潜力;研究适宜的栽培条件和措施是今后花生再高产主攻方向。
A comparative study on canopy characters and efficiency for solar energy utilization in peanut at the yields of 8.5 t/ha and 6.0 t/ha was carried out. Results are:A longer duration of maximum leaf area index (LAI) was a marked character in supper high-yielding peanut (SHYP). The leaf area duration (LAD) of SHYP reached 400.1 m2·d/m2, significantly higher than that of HYP. The LAD in yield-forming stage was very important to peanut yield, taking more than 80% over whole growing season. The efficiency of LIR per unit leaf area in SHYP was lower than that in HYP. The dry matter production rate (DMPR) was constantly higher in SHYP compared with that in HYP during whole growing season, especially during late growing season. There was a clear character for SHYP. It was estimated that there existed a high potential in ESEU for peanut production, and the optimum conditions and measures for further increase of peanut yield should be studied in future.
出处
《华北农学报》
CSCD
北大核心
2004年第2期40-43,共4页
Acta Agriculturae Boreali-Sinica
基金
国家自然基金委资助项目(3880543)
关键词
花生
超高产群体
光能利用率
光截获率
叶面积系数
产量
Peanut
Super high yield
Light interception-rate
Efficiency for solar energy utilization
