丘陵旱地豫薯8号夏薯干物质积累与分配规律研究  

The law of accumulation and distribution of dry matter in summer sweetpotato Yushu No.8 in hilly dryland

作　　者：王林生[1] 李友军[1] 

机构地区：[1]洛阳农业高等专科学校,河南洛阳471003

出　　处：《干旱地区农业研究》2001年第3期83-86,共4页Agricultural Research in the Arid Areas

基　　金：河南省重大科技攻关项目部分内容 (项目编号 :971 0 5 0 2 0 1 )

摘　　要：研究结果表明 ,豫薯 8号干物质的积累 ,在整个生育期内都明显高于徐薯 1 8,其分配规律为 :前期以地上部茎叶为主 ,中期地下部块根逐渐增加 ,后期则以地下部积聚为主 ,源库关系协调 ,具有较高的生物产量、经济产量和经济系数。栽后 1 30 d(收获时 )豫薯 8号的生物产量为 1 4.45 t/hm2 、经济产量为 9.60 t/hm2 ,分别比徐薯 1 8增产 2 0 .5 %和 30 .8% ,经济系数为 0 .66,明显高于徐薯 1 8( 0 .61 )Accumulation of dry matter of Yushu No.8 was evidently higher than Xushu 18 in all growth stage. Its law of distribution showed that dry matter was mainly distributed in vines in early stage, then its storage in root increased in middle and late stage. It had harmonious source sink relationship, higher biological and economic yield and coefficient. Biological and economic yield of Yushu No.8 was 14.45 t/hm 2 and 9.06 t/hm 2 respectively 130 days after transplanting, 20.5% and 30.8%, higher than Xushu 18. whileits economic coefficient was 0.66, also higher than that of Xushu 18.

关 键 词：豫薯8号甘薯 干物质积累 干物质分配 丘陵旱地 净同化率 经济系数 

分 类 号：S531.01[农业科学—作物学]