| 用核磁共振研究浸种方法对水稻种子吸水量的影响 |
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| 引用本文： | 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,2016,32(7):237-243. |
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| 作者姓名： | 宋平 杨涛 王成 宋鹏 潘大宇 |
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| 作者单位： | 1. 沈阳农业大学信息与电气工程学院，沈阳 110866; 国家农业智能装备工程技术研究中心，北京 100097; 农业部农业信息技术重点实验室，北京 100097; 农业智能装备技术北京市重点实验室，北京 100097;2. 沈阳农业大学信息与电气工程学院,沈阳,110866;3. 国家农业智能装备工程技术研究中心，北京 100097; 农业部农业信息技术重点实验室，北京 100097; 农业智能装备技术北京市重点实验室，北京 100097 |
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| 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 |
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| 摘 要： | 为寻求较佳浸种方法，该文应用低场核磁共振检测技术，研究了不同的浸种方式及浸种溶剂对水稻种子吸水量的影响。试验利用横向弛豫时间 T2反演谱分析了水稻种子的水分状态变化及吸水特性，发现浸种过程改变了水稻种子内部的水分分布情况，水稻种子吸水量对初始含水率差异不显著(P>0.05)，但对各种浸种方法差异显著(P<0.05)。研究表明，采用连续浸种4 h、浸种3 h-晾干1 h-浸种1 h、浸种2 h-晾干1 h-浸种2 h及浸种2 h-晾干2 h-浸种2 h这4种不同的浸种方式时，浸种2 h-晾干1 h-浸种2 h的间歇浸种方式吸水率较高；采用清水、强氯精300倍液、饱和澄清石灰水、质量分数为40%福尔马林的50倍液、100倍液及200倍液6种不同的浸种溶液时，应用质量分数为40%福尔马林50倍液药剂时吸水率较高。低场核磁共振检测技术揭示了水稻种子含水量的影响因素，为浸种过程中吸水量的测定提供了一种有效的方法。
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| 关 键 词： | 水分 核磁共振 种子 弛豫时间 弛豫谱 吸水量 |
| 收稿时间： | 2015/6/12 0:00:00 |
| 修稿时间： | 8/3/2015 12:00:00 AM |
Effects of rice seed soaking methods on moisture absorption capacity by low-field nuclear magnetic resonance |
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| Song Ping,Yang Tao,Wang Cheng,Song Peng and Pan Dayu.Effects of rice seed soaking methods on moisture absorption capacity by low-field nuclear magnetic resonance[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(7):237-243. |
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| Authors: | Song Ping Yang Tao Wang Cheng Song Peng and Pan Dayu |
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| Institution: | 1. College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, China2. National Research Center of Intelligent Equipment for Agriculture, Beijing 10097, China3. Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 10097, China4. Beijing Key Laboratory of Intelligent Equipment Technology for Agriculture, Beijing 10097, China,1. College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, China,2. National Research Center of Intelligent Equipment for Agriculture, Beijing 10097, China3. Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 10097, China4. Beijing Key Laboratory of Intelligent Equipment Technology for Agriculture, Beijing 10097, China,2. National Research Center of Intelligent Equipment for Agriculture, Beijing 10097, China3. Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 10097, China4. Beijing Key Laboratory of Intelligent Equipment Technology for Agriculture, Beijing 10097, China and 2. National Research Center of Intelligent Equipment for Agriculture, Beijing 10097, China3. Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 10097, China4. Beijing Key Laboratory of Intelligent Equipment Technology for Agriculture, Beijing 10097, China |
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| Abstract: | 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 time T2 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. |
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| Keywords: | moisture nuclear magnetic resonance (NMR) seed relaxation time relaxation spectrum moisture absorbing capacity |
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