期刊论文

中文

湖南农业科学

1006-060X

2011

21

24-26+33

10.3969/j.issn.1006-060X.2011.21.010

农业部马铃薯产业技术体系岗位科学家基金（CARS-10-P19）； 马铃薯旱作节水栽培技术研究与集成示范（nyhyzx07-006-7）；

本校为第一机构

以浙紫1号、农大紫薯2号、湘紫薯2号为研究材料,徐薯22号为对照,进行紫心甘薯块茎大小与出苗数量之间的相关性分析,以及不同大小块茎薯苗的生长差异性分析,结果表明:种薯大小对甘薯种苗生产具有一定的影响,并且存在品种差异性；中小薯(≤0.5 kg)的顶部顶端优势减弱,芽体分布比较均匀,出芽速度较一致,生长较整齐；大薯( ≥0.5 kg)始出苗时间和出苗期均比小薯延迟；0.2～0.5 kg与≥0.5 kg的种薯单薯出芽数之间没有显著差异.比较认为0.2～0.5 kg大小的甘薯在生产上做种育苗比较适宜.

Taking Zhezi No.1, Nongdazishu No.2 and Xiangzishu No.2 as experimental materials and taking Xushu22 as the control to analyze the correlation between seed-tuber size and germination numbers of seedlings and the growth difference of seedlings from different sizes of purple sweet-potato tuber. The results indicated that seed- tuber size has some influences on production of potato seedlings, but there is a difference among varieties; the apical dominance of medium and small potato （~〈0.5 kg） decreased, but the buds distributed even, had unifor...