摘要
以传统水田种植(conventional tillage,CT)为对照,对水上种植(culture in water-CW)水稻的光合特性、根系特点和部分农艺性状进行比较研究。结果发现,水稻在CW的光合速率(PN)和气孔导度(gs)增加幅度较大,根条数、根系活力和酶活性显著提高,分蘖数和有效穗数分别增加17.91%和24.07%;水分利用率、株高、结实率和千粒质量却无明显差异。结果表明,CW通过提高根系吸收能力、增加分蘖数和有效穗数及提高光合速率,达到增产的目的,是值得推广的种植方式。
The photosynthetic characteristics, root characteristics and part of the agronomic traits of rice with the floating culture method （CW） and conventional tillage （CT） were studied. The results showed that photosynthetic rate （PN） and stomatal conductance （gs） in CW were higher than those in CT; compared with CT, rice cultivated in CW significantly enhanced root numbers, root activities and enzyme activities, and increased tillers and effective panicle number by 17.91% and 24.07%, respectively. No significant differences were observed in the water use efficiency （WUE）, plant height, seed setting rate and the thousand seed mass between CW and CT. Rice with CW exhibited more root absorption, tillers and effective panicle number, and higher PN, thus achieve the purpose of the increase in production. This research suggests the floating culture method is worth popularizing.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2012年第12期127-133,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
湖南省高校科技创新团队支持计划
湖南省重点学科建设项目资助
关键词
光合
生理
种植
根系特点
photosynthesis, physiology, cultivation, root characteristics
