摘要
旱育秧移栽后有明显的分蘖和生长优势，尤其在节水灌溉或低土壤水分条件下，旱育秧有效穗数多、干物质累积量高、抽穗后的光合势大，较水育秧显著增产。但在土壤水分充足或常规灌溉条件下，旱育秧分蘖成穗率低、有效穗数少，较水育秧增产幅度小。表明旱育秧配合本田期节水灌溉，其增产潜力较大。
The dry raised seedlings (D RSs) had obvious superiority in tillering and growth after transplanting Especially under the condition of water saving irrigation or low soil moisture, D RSs had more effective tillers, higher dry matter accumulation, larger photosynthetic potential after heading, and higher grain yield, compared with the moist raised seedlings (M RSs) However, D RSs had low ratio of panicles to tillers and fewer effective panicles, and had no significant difference with M RSs in terms of grain yield under the condition of conventional irrigation or adequate soil moisture It is suggested that D RSs have greater grain increasing potential if water saving irrigation is adopted in paddy field
出处
《江苏农学院学报》
CSCD
1998年第1期41-44,共4页
Jiangsu Agricultural Research
基金
农业部"八五"重点资助
关键词
水稻
旱育秧
土壤水分
产量
Rice
dry raised seedlings
soil moisture
grain yield
