摘要
几年来的试验证明,甘薯高产栽培在不同土壤条件下产量差别很大,以疏松的砂土产量最高。为了明确高产的原因,为高产栽培提供依据,我们做了甘薯在不同土壤条件下高产规律的初步研究。
0.1 nu land of artificial sand,loam and clay were tested respectively in 1978 for studying general high-yielding law of sweet potato.The results showed that in sand with good air permeability,the plants took up more potassium and less nitrogen,the KO/N ratio was higher,photosynthesis was increased,the photosynthetic products were reasonably transmitted,the primary cambium was well developed,the secondary cambium formed early with vigorous fission,and the high-yield was obtained.
作者
王树钿
于作庆
Wang Shu-tian;Yu Zuo-qing(The Agricultural Research Institute of Yan-tai District,Shandong Province)
出处
《中国农业科学》
1981年第1期49-55,共7页
Scientia Agricultura Sinica
