| 水网地区水稻土的含硒量及根外施硒对糙米硒含量的影响 |
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| 引用本文： | 张雪林,姚鼎汉.水网地区水稻土的含硒量及根外施硒对糙米硒含量的影响[J].土壤学报,2000,37(2):242-249. |
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| 作者姓名： | 张雪林 姚鼎汉 |
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| 作者单位： | 1. 浙江师范大学，金华市 321004
2. 嘉善县农林局 |
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| 摘 要： | 本文通过对嘉善县平原水稻土硒含量特征和该区水稻硒含量之间关系的调查研究表明：（１）嘉善县平原水稻土，水溶态硒含量低于一般水稻土水溶态硒的临界值（０．０１０μｇ／ｇ），这与该区的土壤母质、地形等因素相关；（２）低硒水稻土了水稻对硒的吸收积累，因此该县出产的稻米硒含量亦普遍较低，平均含硒量低于粮食硒的正常含量范围（０．０４０～０．０７０μｇ／ｇ）；（３）水稻地上各部分含硒量存在差异，糠、秸杆中的含硒量
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| 关 键 词： | 水稻土 水溶态硒 稻米含硒量 土壤含硒量 硒肥 |
| 收稿时间： | 3/9/1999 12:00:00 AM |
| 修稿时间： | 1999年3月9日 |
Se CONTENT OF PADDY SOIL IN PLAIN REGION OF A NETWORK OF RIVERS AND EFFECT OF FOLIAGE SPRAY OF Se-COMPOUND ON Se CONTENT OF RICE |
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| Zhan Xue-lin and Yao Ding-han.Se CONTENT OF PADDY SOIL IN PLAIN REGION OF A NETWORK OF RIVERS AND EFFECT OF FOLIAGE SPRAY OF Se-COMPOUND ON Se CONTENT OF RICE[J].Acta Pedologica Sinica,2000,37(2):242-249. |
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| Authors: | Zhan Xue-lin and Yao Ding-han |
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| Institution: | Department of Geography, Zhejiang Normal University 321004;Jiashan Agriculture and Forestry Bureau of Zhejiang Province |
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| Abstract: | From a three-year fix-location field experiment, the research work on the Se content of paddy soil and effect of foliage spray of Se-compound on the Se content of rice in Jiashan plain, the author found that:(l) The water soluble Se of paddy soil in Jiashan plain, resulting from the low contents of the total Se of paddy soil, was below critical value (0.01μg/g). It was significantly related to parent material and geomorphological factors etc; (2) The absorption of Se by rice was restricted by low water soluble Se of paddy soil, resulting in the rice Se reduction in this region. The average of rice grain Se was lower than the normal food Se contents (0.040～0.070μg/g);(3) The above-ground organs of rice contain different amounts of Se: the Se contents in the bran and the straw were higher than those of both early and late rice grain; the Se contents in the groin, bran and straw of the early rice were lower than those of the late rice, respectivey; (4) By spraying 20μg/g Se compounds during the different rice growth stages the Se contents in the grain, bran and straw were increased, and the Se contents of the grain finally met normal standards of Se contents in food. The best time to spraying Se-compound was at the full spik stage, and effect on early rice is better than that on late rice. |
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| Keywords: | Paddy soil Water-soluble Se Selenium contents of rice |
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