丘陵旱地甘薯豫薯8号物质生产性能分析  

Study on dry matter production property of sweetpotato Yushu No.8 in the hilly dryland

作　　者：王林生[1] 李友军[1] 

机构地区：[1]河南省洛阳农业高等专科学校,河南洛阳471003

出　　处：《山地农业生物学报》2001年第4期252-255,共4页Journal of Mountain Agriculture and Biology

基　　金：河南省重大科技攻关资助项目 (9710 5 0 2 0 1)

摘　　要：采用植物生长分析法 ,对丘陵旱地豫薯 8号进行物质生产性能分析。结果表明 ,豫薯 8号的叶面积系数 (LAI)、相对生长率 (RGR)和净同化率 (NAR)均显著高于徐薯 18;在整个甘薯生长过程中 ,豫薯 8号的NAR有两个高峰期 ,分别为栽后的 5 0～ 70d和 90～ 10 0d ;第一个高峰期其NAR为 6.2 4 g/ (m2 ·d) ,比徐薯 18提高 2 0 .2 % ;第二个高峰期NAR为 6.5 6g/ (m2 ·d) ,比徐薯 18提高 13.5 %。豫薯 8号的叶面积比率 (LAR)则明显低于徐薯 18。证明豫薯 8号有良好的物质生产性能 ,可作为徐薯The dry matter production property of Yushu No.8 in the hilly dryland was analyzed by using growth analysis. The LAI, RGR, NAR of Yushu NO. 8 was higher than Xushu 18. Its NAR had two peaks in whole growth stage, at 50-70 and 90-110 days after transplanting, the first peak was 6.24 g/(m 2·d), increased by 20.2% than Xushu 18, the second was 6.56 g/(m 2·d), raised by 13.5%, and LAR was lower. The results showe that Yushu No.8 has better dry matter production property, and can be use as a substitute for Xushu 18.

关 键 词：甘薯 豫薯8号 物质生产性能 丘陵旱地 

分 类 号：S531[农业科学—作物学]