摘要
以徐薯 18为材料 ,研究了甘薯种薯的增产性能。结果表明 ,四级种薯的单株干重、净同化率和光合势在整个生育期内均显著高于对照 ;其干物质分配特点表现为 ,前期光合产物主要分配给地上部茎叶 ,中后期光合产物向地下部输送增加 ,从而奠定了四级种薯高产的物质基础。
This paper studied increasing production property of four-stage seed stock on sweet potato. The results showed that dry weight of plant,NAR and trend of photosynthesis of four-stage seed stock were higher respectively than the contrast during whole growth. The features of its dry matter distribution were outcome that photosynthesis distributed to the upper stems and leaves in early-stage , transmit to underground parts increasingly in mid-late stage .Those laid a substantial foundation of high yield.
出处
《种子》
CSCD
北大核心
2004年第11期27-29,共3页
Seed
关键词
甘薯
种薯
增产性能
光合产物
Sweet potato Four-stage seed stock Increasing Production Property
