摘要
研究叶子的消长规律是研究大豆高产理论的重要组成部分。在光合效率大致相同的条件下,叶面积的大小和叶子工作时间的长短,会直接影响干物质的积累。在一定自然条件和品种类型以及栽培措施条件下,大豆在主要生育阶段保持多大的叶面积较为合适,既是指导生产的重要依据,也是农业科学研究中的重要理论问题。
The relation between the increase of soybean leaf area and the yield,the structure of the population,net assimilation rate,and the rainfall has been described in this paper.It was ascertained that as the economic yields of soybeans wereapproximately 200 kg per mu.The range of leaf area index was as follows:from 3 to 4 at flowering period,5 to 6 at the period of pod set:4.5,to 5 at podfilling period of yellow leaf in Harbin district,and it may be used as the basis for improving technical measures in agriculture and forms the theoretical basis for high-yield and stable production of soybean.
作者
常耀中
Chang Yao-chung(The Institute of Soybean Science,Agricultural Academy of Heilungkiang Province)
出处
《中国农业科学》
1981年第2期22-26,共5页
Scientia Agricultura Sinica
