农业工程学报2016，Vol.34Issue(7)：237-243,7.DOI:10.11975/j.issn.1002-6819.2016.07.033
用核磁共振研究浸种方法对水稻种子吸水量的影响
Effects of rice seed soaking methods on moisture absorption capacity by low-field nuclear magnetic resonance
摘要
Abstract
The low field nuclear magnetic resonance (LF-NMR) detection technique was used to study the effects of different seed soaking methods and soaking solution on rice seed water absorption for finding a better seed soaking method. In the test, the transverse relaxation timeT2 inversion spectrum was used to study the change of rice seeds water status and water absorption characteristics. It was found that the soaking process can change the distribution of the moisture inside the rice seed. The seed water absorption capacity were not significant (P>0.05) to the initial moisture content rate, but were significant (P<0.05) to different soaking methods. The results show that the seed water absorption rate is the highest using the intermittent soaking method of soaking 2 h-drying 1 h-soaking 2 h in the 4 kinds of different seed soaking methods of 4 h continuous soaking, soaking 3 h-drying 1 h-soaking 1 h, soaking 2 h-drying 1 h-soaking 2 h and soaking 2 h-drying 2 h-soaking 2 h. The seed water absorption rate is the highest using the 40% formalin 50 times liquid in the 6 kinds of different soaking solutions of pure water, strong chlorine 300 times liquid, saturated clarification lime water, 40% formalin 50 times liquid, 40% formalin 100 times liquid and 40% formalin 200 times liquid. The experimental results can provide an effective method for the determination of moisture absorption in the seed soaking process, also provide the data support and theoretical basis for seeking the best soaking condition.关键词
水分/核磁共振/种子/弛豫时间/弛豫谱/吸水量Key words
moisture/nuclear magnetic resonance (NMR)/seed/relaxation time/relaxation spectrum/moisture absorbing capacity分类
农业科技引用本文复制引用
宋平,杨涛,王成,宋鹏,潘大宇..用核磁共振研究浸种方法对水稻种子吸水量的影响[J].农业工程学报,2016,34(7):237-243,7.基金项目
National high technology research and development program(863)(2012AA10A503), National key scientific instrument and equipment development projects(2011YQ080052), Public welfare industry research special (Agriculture)201203026 （863）
